AGENDA. NEC Code-Making Panel 14. Report on Comment Meeting. November 28-December 1, Redondo Beach, CA

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 Fax: 617-770-0700 www.nfpa.org AGENDA NEC Code-Making Panel 14 Report on Comment Meeting November 28-December 1, 2012 Redondo Beach, CA Item No. Subject 12-11-1 Call to Order 12-11-2 Introduction of Members and Guests 12-11-3 Review of Meeting Procedures and Revision Schedule 12-11-4 Approval of ROP Meeting Minutes 12-11-5 Task Group Reports (if any) 12-11-6 Processing of Comments 12-11-7 Fire Protection Research Foundation Requests 12-11-8 Old Business 12-11-9 New Business 12-11-10 Adjournment Page 1 of 62

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14-1 Log #392 NEC-P14 John L. Simmons, Florida East Coast Electrical JATC 14-3 Revise the text found in Sections 500.2, 504.2, 505.2, 506.2, 513.2, 515.2 and 516.2 as follows: Revise the parent text of 500.2 to include all definitions in Articles 500 516 that appear in more than one article. A new last sentence is added to make it clear that 500.2 may have definitions that apply to Articles 505 and 506 but that no other sections of Article 500 apply to 505 or 506 unless they are specifically referenced in the article. This will clarify the intent of CMP14 that Articles 505 and 506 are not a part of the hazardous locations protection methods prescribed in Article 500. Relocate the term associated apparatus from 504.2 to 500.2. The term is used in Articles 500, 504, 505 and 506. Include the new term cord connector which was introduced in Proposal 14-11b and accepted by CMP14. Update the standard dates in the informational note for dust-ignitionproof. Change the term dusttight to dusttight (as applied to Hazardous (Classified) Locations). This will in essence remove the conflict between the definition in 500.2 and Article 100 and it is consistent with the format used in Article 100 to allow two definitions for accessible (accessible (as applied to equipment) and accessible (as applied to wiring methods). Dusttight Informational Note see panel action on Proposal 14-10. Electrical and Electronic Equipment Informational Note see panel action on Proposal 14-10. Change the term explosionproof equipment to explosionproof equipment (as applied to Hazardous (Classified) Locations). This will in essence remove the conflict between the definition in 500.2 and Article 100 and it is consistent with the format used in Article 100 to allow two definitions for accessible (accessible (as applied to equipment) and accessible (as applied to wiring methods). Hermetically Sealed Informational Note see panel action on Proposal 14-10. Relocate the definition of intrinsically safe apparatus from 504.2 to 500.2. The term is found in Articles 500, 503, 504, 505 and 506. Nonincendive Circuit Informational Note see panel action on Proposal 14-10. Nonincendive Component Informational Note see panel action on Proposal 14-10. Nonincendive Equipment Informational Note see panel action on Proposal 14-10. Nonincendive Field Wiring Apparatus Informational Note see panel action on Proposal 14-10. Delete the Informational Note for Oil Immersion. UL 698 has been withdrawn. Relocate the definition of pressurized and the Informational Note for the definition from 506.2 to 500.2. The term is found in Articles 501, 505 and 506. Since the term is also used in Article 326, the phrase as applied to Hazardous (Classified) Locations has been added to make it perfectly clear that this definition is not intended to define the term as used in that article. Relocate the definition of simple apparatus and the Informational Note for the definition from 504.2 to 500.2. The term is found in Articles 500, 501, 502, 503, 504, 505 and 506. Create new section 501.2 Definitions and refer back to 500.2. This will add clarity to the use of definitions in Articles 500 516. Create new section 502.2 Definitions and refer back to 500.2. This will add clarity to the use of definitions in Articles 500 516. Create new section 503.2 Definitions and refer back to 500.2. This will add clarity to the use of definitions in Articles 500 516. Create new parent text for 504.2. The new text will make it perfectly clear that the defined terms in the section apply specifically to Article 504. Delete the definition of associated apparatus" from 504.2 and relocate it to 500.2. The term is used in Articles 500, 504, 505 and 506. Delete the control drawing reference to 500.2. With the proposed restructuring of the definitions in Article 500 516 it is perfectly clear that defined terms will be found in one of two locations; 500.2 if the term is used in more than one article and the dot 2 section of the article it appears in, if it is only used in that article. Delete the definition of intrinsically safe apparatus from 504.2 and relocate it to 500.2. The term is used in Articles 500, 503, 504, 505, and 506. Update the standard date in the Informational Note for intrinsically safe circuit. Delete the definition of simple apparatus from 504.2 and relocate it to 500.2. The term is used in Articles 500, 501, 502, 503, 504, 505, and 506. 1 Page 7 of 62

Revise the parent text for 505.2 to make it consistent with the new parent text of 504.2. Delete the definition of combustible gas detection system from 505.2. The term is defined in 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500 and 505. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Delete the definition of electrical and electronic equipment and its Informational Note from 505.2. The term is defined in 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500, 501, 502, 503, 505, and 506. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Revise Informational Note 1 and Note 2 for encapsulation 'm'. See the panel action on Proposal 14-131. Revise the standard information in the Informational Note for flameproof d. See the panel action on Proposal 14-129. Revise the standard information in the Informational Note for intrinsic safety 'i'. See the panel action on Proposal 14-129. Oil Immersion o Informational Note: insert the standard date. Powder Filling q Informational Note: insert the standard date. Revise the standard information in the Informational Note for pressurization p. See the panel action on Proposal 14-129. Revise the standard information in the Informational Note for type of protection n. See the panel action on Proposal 14-129. Delete the definition of unclassified locations from 505.2. The term is defined in 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500, 501, 502, 503, 504, 505, 506, 513, 514, and 516. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Revise the parent text for 506.2 to make it consistent with the new parent text of 504.2. Delete the definition of associated nonincendive field wiring apparatus from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used Articles 500, and 506. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Delete the definition of combustible dust from 506.2. The term is defined in 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500, 502, 504, 505, 506, and 516. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Delete the definition of dust-ignitionproof and its Informational Note from 506.2. The term is defined in 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500, 502, and 506. (Other than the definition in 506.2 the term is only used one other time in 506 and that is in an informational note.) Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Delete the definition of dusttight from 506.2. The term is defined in Article 100 and sections 500.2 and 505.2 in the current version of the NEC (2008). The term is used Articles 500, 502, 503, and 506. Under the proposed restructure, definitions of terms used in more than one article (500 516) are being placed in 500.2. Delete the definition of nonincendive circuit and its Informational Note from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used in Articles 500, 501, 502, 503, and 506. Delete the definition of nonincendive equipment and its Informational Note from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used in Articles 500, 506, and 516. Delete the definition of nonincendive field wiring from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used in Articles 500, 501, 502,503, 504, and 506. Delete the definition of nonincendive field wiring apparatus and its Informational Note from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used in Articles 500, 501, 502, 503, and 506. Delete the definition of pressurized and its Informational Note from 506.2. The term is defined in 500.2 and 506.2 in the current version of the NEC (2008). The term is used in Articles 501, 505 and 506. Change protection by encapsulation md to protection by encapsulation m and revise the standard in the Informational Note No. 1. Revise Informational Note No. 2. See panel action on Proposal 14-196. Change protection by enclosure td to protection by encapsulation t and revise the standard in the Informational Note No. 1. Add new Informational Note No. 2. See panel action on Proposal 14-198. Revise the parent text for 513.2 to make it consistent with the new parent text of 504.2. Change the term portable equipment to portable equipment (as applied to Article 513). The term portable equipment appears in Articles 250,368, 430, 490, 511, 513, 516, 517, 518, 520, 525, 530, 540, 640, 668, 675, and 680. The term is defined in Articles 513, 520, 530, 640, and 680. This proposed change makes it clear that the definition found in 513.2 is specific to Article 513. Delete 515.2 in its entirety. See Proposal 14-241. 2 Page 8 of 62

Revise the parent text for 516.2 to make it consistent with the new parent text of 504.2. A copy of the NEC code text with proposed changes follows: The definitions found in this section are specific to the Hazardous (Classified) Locations found in For purposes of Articles 500 through 504 and Articles 510 through 516 the following definitions apply. No other section of this Article shall apply to Article 505 or 506 unless it is specifically referenced in that article. Apparatus in which the circuits are not necessarily intrinsically safe themselves but that affect the energy in the intrinsically safe circuits and are relied on to maintain intrinsic safety. Associated apparatus may be either of the following: (1) Electrical apparatus that has an alternative-type of protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used within a hazardous (classified) location Informational Note No. 1: Associated apparatus has identified intrinsically safe connections for intrinsically safe apparatus and also may have connections for nonintrinsically safe apparatus. Informational Note No. 2: An example of associated apparatus is an intrinsic safety barrier, which is a network designed to limit the energy (voltage and current) available to the protected circuit in the hazardous (classified) location, under specified fault conditions. Apparatus in which the circuits are not necessarily nonincendive themselves but that affect the energy in nonincendive field wiring circuits and are relied upon to maintain nonincendive energy levels. Associated nonincendive field wiring apparatus may be either of the following: (1) Electrical apparatus that has an alternative type of protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used in a hazardous (classified) location Informational Note: Associated nonincendive field wiring apparatus has designated associated nonincendive field wiring apparatus connections for nonincendive field wiring apparatus and may also have connections for other electrical apparatus. Any finely divided solid material that is 420 microns (0.017 in.) or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) and presents a fire or explosion hazard when dispersed and ignited in air. [ 2008] A protection technique utilizing stationary gas detectors in industrial establishments. A drawing or other document provided by the manufacturer of the intrinsically safe or associated apparatus, or of the nonincendive field wiring apparatus or associated nonincendive field wiring apparatus, that details the allowed interconnections between the intrinsically safe and associated apparatus or between the nonincendive field wiring apparatus or associated nonincendive field wiring apparatus. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust-ignition proof, or a flameproof seal. Equipment enclosed in a manner that excludes dusts and does not permit arcs, sparks, or heat otherwise generated or liberated inside of the enclosure to cause ignition of exterior accumulations or atmospheric suspensions of a specified dust on or in the vicinity of the enclosure. Informational Note: For further information on dustignitionproof enclosures, see Type 9 enclosure in ANSI/NEMA 250-1991 2008,, and ANSI/UL 1203-1994 2009,. Enclosures constructed so that dust will not enter under specified test conditions. Informational Note: See ANSI/ISA-12.12.01-2007,. ANSI/ISA-12.12.01-2011, Materials, fittings, devices, appliances, and the like that are part of, or in connection with, an electrical installation. Informational Note: Portable or transportable equipment having self-contained power supplies, such as battery-operated equipment, could potentially become an ignition source in hazardous (classified) locations. See ISA-RP12.12.03-2002, ANSI/ISA-12.12.03-2011,. Equipment enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor that may occur within it and of preventing the ignition of 3 Page 9 of 62

a specified gas or vapor surrounding the enclosure by sparks, flashes, or explosion of the gas or vapor within, and that operates at such an external temperature that a surrounding flammable atmosphere will not be ignited thereby. Informational Note: For further information, see ANSI/UL 1203-1994 2009,. Equipment sealed against the entrance of an external atmosphere where the seal is made by fusion, for example, soldering, brazing, welding, or the fusion of glass to metal. Informational Note: For further information, see ANSI/ISA-12.12.01-2007,. ANSI/ISA-12.12.01-2011, Apparatus in which all the circuits are intrinsically safe. A circuit, other than field wiring, in which any arc or thermal effect produced under intended operating conditions of the equipment, is not capable, under specified test conditions, of igniting the flammable gas air, vapor air, or dust air mixture. Informational Note: Conditions are described in ANSI/ISA-12.12.01-2007,. ANSI/ISA-12.12.01-2011, A component having contacts for making or breaking an incendive circuit and the contacting mechanism is constructed so that the component is incapable of igniting the specified flammable gas air or vapor air mixture. The housing of a nonincendive component is not intended to exclude the flammable atmosphere or contain an explosion. Informational Note: For further information, see ANSI/ISA-12.12.01-2007, ANSI/ISA-12.12.01-2011, Equipment having electrical/electronic circuitry that is incapable, under normal operating conditions, of causing ignition of a specified flammable gas air, vapor air, or dust air mixture due to arcing or thermal means. Informational Note: For further information, see ANSI/ISA-12.12.01-2007,. ANSI/ISA-12.12.01-2011, Wiring that enters or leaves an equipment enclosure and, under normal operating conditions of the equipment, is not capable, due to arcing or thermal effects, of igniting the flammable gas air, vapor air, or dust air mixture. Normal operation includes opening, shorting, or grounding the field wiring. Apparatus intended to be connected to nonincendive field wiring. Informational Note: For further information, see ANSI/ISA-12.12.01-2007,. ANSI/ISA-12.12.01-2011, Electrical equipment immersed in a protective liquid in such a way that an explosive atmosphere that may be above the liquid or outside the enclosure cannot be ignited. Informational Note: For further information, see ANSI/UL 698-1995,. The process of supplying an enclosure with a protective gas with or without continuous flow at sufficient pressure to prevent the entrance of combustible dust or ignitable fibers/flyings. Informational Note: For further information, see ANSI/NFPA 496-2008, The process of (1) purging, supplying an enclosure with a protective gas at a sufficient flow and positive pressure to reduce the concentration of any flammable gas or vapor initially present to an acceptable level; and (2) pressurization, supplying an enclosure with a protective gas with or without continuous flow at sufficient pressure to prevent the entrance of a flammable gas or vapor, a combustible dust, or an ignitable fiber. Informational Note: For further information, see ANSI/NFPA 496-2008,. An electrical component or combination of components of simple construction with well defined 4 Page 10 of 62

electrical parameters that does not generate more than 1.5 volts, 100 milliamps, and 25 milliwatts, or a passive component that does not dissipate more than 1.3 watts and is compatible with the intrinsic safety of the circuit in which it is used. Informational Note: The following apparatus are examples of simple apparatus: a) Passive components, for example, switches, junction boxes, resistance temperature devices, and simple semiconductor devices such as LEDs b) Sources of stored energy consisting of single components in simple circuits with well-defined parameters, for example, capacitors or inductors, whose values are considered when determining the overall safety of the system c) Sources of generated energy, for example, thermocouples and photocells, which do not generate more than 1.5 V, 100 ma milliamps, and 25 mw milliwatts Locations determined to be neither Class I, Division 1; Class I, Division 2; Class I, Zone 0; Class I, Zone 1; Class I, Zone 2; Class II, Division 1; Class II, Division 2; Class III, Division 1; Class III, Division 2; Zone 20; Zone 21; Zone 22; or any combination thereof. See 500.2. See 500.2. See 500.2. Definitions found in this section are specific to this Article. Apparatus in which the circuits are not necessarily intrinsically safe themselves but that affect the energy in the intrinsically safe circuits and are relied on to maintain intrinsic safety. Associated apparatus may be either of the following: (1) Electrical apparatus that has an alternative-type protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used within a hazardous (classified) location Informational Note No. 1: Associated apparatus has identified intrinsically safe connections for intrinsically safe apparatus and also may have connections for nonintrinsically safe apparatus. Informational Note No. 2: An example of associated apparatus is an intrinsic safety barrier, which is a network designed to limit the energy (voltage and current) available to the protected circuit in the hazardous (classified) location, under specified fault conditions. See the definition in 500.2. Intrinsically safe circuits in which the possible interconnections have not been evaluated and identified as intrinsically safe. Apparatus in which all the circuits are intrinsically safe. A circuit in which any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under prescribed test conditions. Informational Note: Test conditions are described in ANSI/UL 913-1997 2006,. An assembly of interconnected intrinsically safe apparatus, associated apparatus, and interconnecting cables, in that those parts of the system that may be used in hazardous (classified) locations are intrinsically safe circuits. Informational Note: An intrinsically safe system may include more than one intrinsically safe circuit. An electrical component or combination of components of simple construction with well defined electrical parameters that does not generate more than 1.5 volts, 100 milliamps, and 25 milliwatts, or a passive component that does not dissipate more than 1.3 watts and is compatible with the intrinsic safety of the circuit in which it is used. Informational Note: The following apparatus are examples of simple apparatus: d) Passive components, for example, switches, junction boxes, resistance temperature devices, and simple semiconductor devices such as LEDs e) Sources of stored energy consisting of single components in simple circuits with well-defined parameters, for example, capacitors or inductors, whose values are considered when determining the overall safety of the system f) Sources of generated energy, for example, thermocouples and photocells, which do not generate more than 1.5 V, 100 ma, and 25 mw For purposes of this article, the following definitions apply. Definitions found in this section are specific to this Article. A protection technique utilizing stationary gas detectors in industrial establishments. Materials, fittings, devices, appliances, and the like that are part of, or in connection with, an electrical installation. Informational Note: Portable or transportable equipment having self-contained power supplies, such as battery 5 Page 11 of 62

operated equipment, could potentially become an ignition source in hazardous (classified) locations. Type of protection where electrical parts that could ignite an explosive atmosphere by either sparking or heating are enclosed in a compound in such a way that this explosive atmosphere cannot be ignited. Informational Note No. 1: See ANSI/ISA-60079-18 (12.23.01)-2009, ; IEC 0079 18-1992, and ANSI/UL 60079-18, -2009, Explosive atmospheres - Part 18: Equipment protection by encapsulation m. Informational Note No. 2: Encapsulation is designated type of protection ma for use in Zone 0 locations. Encapsulation is designated type of protection m or mb for use in Zone 1 locations. Encapsulation is designated type of protection mc for use in Zone 2 locations. Type of protection where the enclosure will withstand an internal explosion of a flammable mixture that has penetrated into the interior, without suffering damage and without causing ignition, through any joints or structural openings in the enclosure, of an external explosive gas atmosphere consisting of one or more of the gases or vapors for which it is designed. Informational Note: See ANSI/ISA-60079-1 (12.22.01)-2008, ; ANSI/ISA-60079-1-2009 (12.22.01), and ANSI/UL 60079 1-2009, Type of protection applied to electrical equipment that does not produce arcs or sparks in normal service and under specified abnormal conditions, in which additional measures are applied so as to give increased security against the possibility of excessive temperatures and of the occurrence of arcs and sparks. Informational Note: See ANSI/ISA-60079-7 (12.16.01) - 2008, ; and ANSI/UL 60079-7-2008, Type of protection where any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under prescribed test conditions. Informational Note No. 1: See ANSI/UL 913-1997 2006, ; ANSI/ISA-60079-11 (12.02.01)-2009, ; ANSI/ISA-60079-11-2011 (12.02.01), and ANSI/UL 60079-11-2011, Informational Note No. 2: Intrinsic safety is designated type of protection ia for use in Zone 0 locations. Intrinsic safety is designated type of protection ib for use in Zone 1 locations. Intrinsic safety is designated type of protection ic for use in Zone 2 locations. Informational Note No. 3: Intrinsically safe associated apparatus, designated by [ia], [ib], or [ic], is connected to intrinsically safe apparatus ( ia, ib, or ic, respectively) but is located outside the hazardous (classified) location unless also protected by another type of protection (such as flameproof). Type of protection where electrical equipment is immersed in a protective liquid in such a way that an explosive atmosphere that may be above the liquid or outside the enclosure cannot be ignited. Informational Note: See ANSI/ISA-60079-6 (12.00.05)-2009, ; and ANSI/UL 60079-6-2009, Type of protection where electrical parts capable of igniting an explosive atmosphere are fixed in position and completely surrounded by filling material (glass or quartz powder) to prevent the ignition of an external explosive atmosphere. Informational Note: See ANSI/ISA-60079-5 (12.00.04)-2009, ; and ANSI/UL 60079-5-2009, Type of protection for electrical equipment that uses the technique of guarding against the ingress of the external atmosphere, which may be explosive, into an enclosure by maintaining a protective gas therein at a pressure above that of the external atmosphere. Informational Note: See ANSI/ISA-60079-2 (12.04.01)-2004, ; ANSI/ISA-60079-2-2010 (12.04.01), and IEC 60079-13-2010,. Type of protection where electrical equipment, in normal operation, is not capable of igniting a 6 Page 12 of 62

surrounding explosive gas atmosphere and a fault capable of causing ignition is not likely to occur. Informational Note: See ANSI/UL 60079-15, ; and ANSI/ISA-60079-15 (12.12.02)-2008, ANSI/ISA-60079-15-2009 (12.12.02)-2009, Locations determined to be neither Class I, Division 1; Class I, Division 2; Class I, Zone 0; Zone 1; Zone 2; Class II, Division 1; Class II, Division 2; Class III, Division 1; Class III, Division 2; or any combination thereof. For purposes of this article, the following definitions apply. Definitions found in this section are specific to this Article. Apparatus in which the circuits are not necessarily nonincendive themselves but that affects the energy in nonincendive field wiring circuits and are relied upon to maintain nonincendive energy levels. Associated nonincendive field wiring apparatus may be either of the following: (1) Electrical apparatus that has an alternative type of protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used in a hazardous (classified) location Informational Note: Associated nonincendive field wiring apparatus has designated associated nonincendive field wiring apparatus connections for nonincendive field wiring apparatus and may also have connections for other electrical apparatus. Any finely divided solid material that is 420 microns (0.017 in.) or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) and presents a fire or explosion hazard when dispersed and ignited in air. [ 3.3.3] Equipment enclosed in a manner that excludes dusts and does not permit arcs, sparks, or heat otherwise generated or liberated inside of the enclosure to cause ignition of exterior accumulations or atmospheric suspensions of a specified dust on or in the vicinity of the enclosure. Informational Note: For further information on dustignitionproof enclosures, see Type 9 enclosure in ANSI/NEMA 250-1991,, and ANSI/UL 1203-1994,. Enclosures constructed so that dust will not enter under specified test conditions. A circuit, other than field wiring, in which any arc or thermal effect produced under intended operating conditions of the equipment, is not capable, under specified test conditions, of igniting the flammable gas air, vapor air, or dust air mixture. Informational Note: Conditions are described in ANSI/ISA-12.12.01-2007,. Equipment having electrical/electronic circuitry that is incapable, under normal operating conditions, of causing ignition of a specified flammable gas air, vapor air, or dust air mixture due to arcing or thermal means. Informational Note: Conditions are described in ANSI/ISA-12.12.01-2007, Wiring that enters or leaves an equipment enclosure and, under normal operating conditions of the equipment, is not capable, due to arcing or thermal effects, of igniting the flammable gas air, vapor air, or dust air mixture. Normal operation includes opening, shorting, or grounding the field wiring. Apparatus intended to be connected to nonincendive field wiring. Informational Note: Conditions are described in ANSI/ISA-12.12.01-2007, The process of supplying an enclosure with a protective gas with or without continuous flow at sufficient pressure to prevent the entrance of combustible dust or ignitable fibers/flyings. Informational Note: For further information, see ANSI/NFPA 496-2008, Type of protection where electrical parts that could cause ignition of a mixture of combustible dust or fibers/flyings in air are protected by enclosing them in a compound in such a way that the explosive atmosphere cannot be ignited. Informational Note No. 1: For additional information, see ANSI/ISA-61241-18 (12.10.07)-2006, ANSI/ISA-60079-18 (12.23.01)-2009,, ANSI/UL 60079-18-2009,, and ANSI/ISA-61241-18 (12.10.07)-2011, 7 Page 13 of 62

. Informational Note No. 2: Encapsulation is designated level of protection mad or ma for use in Zone 20 locations. Encapsulation is designated level of protection mbd or mb for use in Zone 21 locations. Encapsulation is designated type of protection mc for use in Zone 22 locations. Type of protection for explosive dust atmospheres where electrical apparatus is provided with an enclosure providing dust ingress protection and a means to limit surface temperatures. Informational Note 1: For additional information, see ANSI/ISA-60079-31 (12.10.03)-2006 2009, ANSI/ISA-61241-0 (12.10.02)-2006,, and ANSI/ISA-61241-1 (12.10.03)-2006 2011, Informational Note No. 2: Protection by Enclosure is designated level of protection ta for use in Zone 20 locations. Protection by Enclosure is designated level of protection tb or td for use in Zone 21 locations. Protection by Enclosure is designated level of protection tc or td for use in Zone 22 locations. Type of protection where any spark or thermal effect is incapable of causing ignition of a mixture of combustible dust, fibers, or flyings in air under prescribed test conditions. Informational Note: For additional information, see ANSI/ISA-61241-11 (12.10.04), Type of protection that guards against the ingress of a mixture of combustible dust or fibers/flyings in air into an enclosure containing electrical equipment by providing and maintaining a protective gas atmosphere inside the enclosure at a pressure above that of the external atmosphere. Informational Note: For additional information, see ANSI/ISA-61241-2 (12.10.06),. An area where combustible dust or ignitable fibers/flyings are present continuously or for long periods of time in quantities sufficient to be hazardous, as classified by 506.5(B)(1). An area where combustible dust or ignitable fibers/flyings are likely to exist occasionally under normal operation in quantities sufficient to be hazardous, as classified by 506.5(B)(2). An area where combustible dust or ignitable fibers/flyings are not likely to occur under normal operation in quantities sufficient to be hazardous, as classified by 506.5(B)(3). For the purpose of this article, the following definitions shall apply. Definitions found in this section are specific to this Article. An aircraft hangar constructed for the express purpose of spray/coating/dipping applications and provided with dedicated ventilation supply and exhaust. Equipment with electrical components suitable to be moved only with mechanical aids or is provided with wheels for movement by person(s) or powered devices. Equipment with electrical components suitable to be moved by a single person without mechanical aids. That portion of a property where liquids are received by tank vessel, pipelines, tank car, or tank vehicle and are stored or blended in bulk for the purpose of distributing such liquids by tank vessel, pipeline, tank car, tank vehicle, portable tank, or container. [ 3.3.32.1] Informational Note: For further information, see NFPA 30-2008,. For the purpose of this article, the following definitions shall apply. Definitions found in this section are specific to this Article. Normally, locations outside of buildings or localized operations within a larger room or space. Such are normally provided with some local vapor extraction/ventilation system. In automated operations, the area limits shall be the maximum area in the direct path of spray operations. In manual operations, the area limits shall be the maximum area of spray when aimed at 180 degrees to the application surface. An enclosure or insert within a larger room used for spray/coating/dipping applications. A spray booth may be fully enclosed or have open front or face and may include separate conveyor entrance and exit. The spray booth is provided with a dedicated ventilation exhaust but may draw supply air from the larger room or have a dedicated air supply. A purposefully enclosed room built for spray/coating/dipping applications provided with dedicated ventilation supply and exhaust. Normally the room is configured to house the item to be painted, providing reasonable access around the item/process. Depending on the size of the item being painted, such rooms may actually be the entire building or the major portion thereof. This comment is the product of the task group request by the TCC (reference Proposal 14-3). The 8 Page 14 of 62

group was appointed by the panel chair Robert Jones. The task group chair is John Simmons. Panel members are: William Lawrence, Edward Briesch, Jack Jamison, Mark Goodman, Larry Burns, and David Wechsler. The suggested changes resolve the issues surrounding any duplicate or conflicting definitions within the purview of CMP14. The revisions that are made involve relocating any definition used in more than one article (500-516) to 500.2. Definitions specific to any article remain in the article where they are used. Definitions found in Articles 500-516 that are found in articles other than 500-516 have been revised by changing the defined term (i.e. Dusttight (as applied to Hazardous (Classified) Locations)). The reorganization of the Article 500 516 definitions will add clarity to the code. 9 Page 15 of 62

14-2 Log #885 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 10 Page 16 of 62

14-3 Log #891 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 11 Page 17 of 62

14-4 Log #1178 NEC-P14 Eliana Brazda, ISA 14-10 Revise text to read as follows: ANSI/ISA-12.12.01-20112, Nonincendive Electrical Equipment for Use in Class I and II, Division 2, and Class III, Divisions 1 and 2 Hazardous (Classified) Locations. Change the ISA standards date of publication to the current publication date. 14-5 Log #489 NEC-P14 Marcelo M. Hirschler, GBH International 14-11a Revise text to read as follows: Finely divided solid particles that present a dust fire or dust explosion hazard when dispersed and ignited in air. (499-2013) Any finely divided solid material that is 420 microns (0.017 in.) or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) and presents a fire or explosion hazard when dispersed and ignited in air. [ 2008] Standards Council issued 499-2013 and it includes the updated definition of combustible dust as indicated in this comment. This definition was adopted as a result of a successful NITMAM at the June 2012 Annual Meeting and the resulting Standards Council decision D#12-13 upholding the action of the assembly. The NEC should adopt the updated definition of a key concept. The existing definition in the NEC (and the proposed definition in the ROP) contains requirements that are unacceptable in NEC definitions. Note that the NEC TCC highlights one of the problems with the ROP proposed definition (use of ASTM and ISO standards). 14-6 Log #573 NEC-P14 Code-Making Panel 14, 14-11a In 500.2 replace the current definition of Combustible Dust with the following: Combustible Dust. Dust particles of 500 microns or smaller (material passing a U.S. No. 35 Standard Sieve as defined in ASTM E 11, Standard Specification for Wire Cloth and Sieves for Testing Purposes) are considered to present a dust fire or dust explosion hazard unless determined otherwise. (See ASTM E 1226 or ISO 6184/1). [499:3.3.3] Definition is extracted from NFPA 499 and the definition in the 2012 Edition of NFPA 499 has been revised. 12 Page 18 of 62

14-7 Log #898 NEC-P14 David Wechsler, American Chemical Council 14-111 Revise the definition of Electrical and Electronic Equipment as follows: Electrical and Electronic Equipment. Materials, fittings, devices, appliances, and the like that are part of, or in connection with, an electrical installation, or portable or transportable equipment having self-contained power supplies, such as battery-operated equipment, which could potentially become an ignition source in hazardous (classified) locations. FPN: Portable or transportable equipment having self-contained power supplies, such as battery-operated equipment, could potentially become an ignition source in hazardous (classified) locations. See ISA-RP12.12.03-2002, Portable Electronic Products Suitable for Use in Class I and II, Division 2, Class I Zone 2 and Class III, Division 1 and 2 Hazardous (Classified) Locations. This comment was developed on the basis of existing texts in the current NEC and the CMP-14 Technical substantiation to Proposal Log 14-111 Log #1754 stating in part The proposed language belongs in a product standard, not in an installation Code. While an argument may be made that overall the intent of the NEC is to address installations, as in the general requirements of Chapters 1-4, Chapter 5 addresses special occupancies and these encompass a different scope. The NEC Chapter 5 states 500.1 Scope Articles 500 Through 504 Articles 500 through 504 cover the requirements for electrical and electronic equipment and wiring for all voltages in Class I, Divisions 1 and 2; Class II, Divisions 1 and 2; and Class III, Divisions 1 and 2 locations where fire or explosion hazards may exist due to flammable gases, flammable liquid produced vapors, combustible liquid produced vapors, combustible dusts, or ignitible fibers/flyings. This scope does not state installation only. Additionally the defined equipment protection methods say nothing about the designs being only for fixed/connected by cord or cable installations or usage and not applicable to portable or transportable equipment having power supplies. If the position of the Panel is that portables and transportable having self contained power supplies are not addressed under Chapter 5, then where are the requirements and the protection designs for portable electrical/electronic equipment found? What basis can there be to have portable devices marked in accordance with the requirements of the NEC, if the NEC has no requirements? How can listings/approvals be made for unregulated equipment designs? The revision provided addresses this important issue. Please also see the NEC structure as contained on page 5 (Figure 90.3) of the 2011 NEC Handbook which properly reflects that Chapter 5 is either supplements or modifies the basic Chapters 1-4 of the NEC with the requirement in Chapter 5 beginning with essentially locations shall be classified for electrical and electronic equipment and wiring for all voltages in Class I,... where fire or explosion hazards may exist...: 14-8 Log #1599 NEC-P14 Mark Goodman, Mark Goodman Electrical Consulting 14-14 Revise text to read as follows: ANSI/API RP500 1997 2012, This and the companion Comment propose to update the date references to ANSI/API RP 500. The latest edition of ANSI/API RP 500 has been approved and released by API. 13 Page 19 of 62

14-9 Log #1600 NEC-P14 Mark Goodman, Mark Goodman Electrical Consulting 14-15 Revise text to read as follows: ANSI/API RP500 1997 2012, This and the companion Comment propose to update the date references to ANSI/API RP 500. The latest edition of ANSI/API RP 500 has been approved and released by API. 14-10 Log #313 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-32 Revise text to read as follows: (e) Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in raceways as stated in 501.10(A). These Fiber Optic optical fiber cables shall be sealed in accordance with 501.15. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 14 Page 20 of 62

14-11 Log #1343 NEC-P14 William E. McBride, Northern Electric Company 14-33 Modify existing Text: (I) General. In Class I, Division I locations, the wiring methods in (a) through (e) shall be permitted. Add new text (g) In industrial establishments with restricted public access, where the conditions of maintenance and supervision ensure that only qualified persons service the installation, and where the cable is not subject to physical damage listed Type TC-ER-HL Cable, up to I inch in diameter, that complies with the crush and impact requirements of Type MC HL cable,and is identified for such use with the marking Type TC-ER-HL shall be permitted. The cable shall contain separate equipment bonding conductor(s) in accordance with 250. 122, and terminated with fittings listed for the application. Type TC-ER-HL Cable shall be installed in accordance with the provisions of TC-ER Cable in Article 336. Existing small diameter MC-HL cables that arc run between enclosures and instruments are easily kinked during initial installation and routine maintenance. The risk of ignition is not from the middle of cables, but from the devices and rerminations of cables where the conductor is exposed. If the Code Making panel thinks it necessary they might further restrict the circuit voltage of these TGER-J-IL Cables to be restricted to less than half of the conductor insulation voltage rating. The application is mostly for 24 volt instrumentation, but may also include some 120 volt utilization devices, yet the cable is rated for 600 volts. 14-12 Log #314 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-37 Revise text to read as follows: Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in cable trays or any other raceway as stated in 501.10(B). Fiber Optical fiber cables shall be sealed in accordance with 501.15. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 14-13 Log #183 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-37a The Correlating Committee directs that the panel reconsider the language in this proposal and Proposal 14-38 and correlate the language. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 15 Page 21 of 62

14-14 Log #184 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-38 The Correlating Committee directs that the panel reconsider the language in this proposal and Proposal 14-37a and correlate the language. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-15 Log #185 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-44 The Correlating Committee directs the panel to review the entire text of 501.15 for consistency with respect to using complete sentences. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-16 Log #449 NEC-P14 William Fiske, Intertek 14-46 Reverse CMP-14 action on Proposal 14-46 and return to the language in NEC 2011. The authority having jurisdiction would not be able to determine whether or not a seal complies with the proposed requirements, as AHJs do not possess the equipment or the expertise needed to test seals in the field. As stated in NEC 90.7, [listing] avoids the necessity for repetition of examinations by different examiners, frequently with inadequate facilities for such work Adding a leak rate specification for seals would create a de facto requirement for listing, yet the submitter s substantiation does not indicate that listing of seals is necessary. Note also that the existing language of 501.15(A)(4), covering seals at a Class I Division 1 boundary, does not include a requirement for listed seals, does not contain a leak rate specification, and none has been proposed for 501.15(A)(4). 14-17 Log #186 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-50 The Correlating Committee directs the panel to reconsider Proposals 14-50 and 14-51 which were accepted with conflicting text in the second sentence of (1). This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 16 Page 22 of 62

14-18 Log #187 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-51 The Correlating Committee directs the panel to reconsider Proposals 14-50 and 14-51 which were accepted with conflicting text in the second sentence of (1). This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-19 Log #374 NEC-P14 Robert A. Jones, Independent Electrical Contractors, Inc. 14-56a Revise text to read as follows: Regardless of the voltage of the electrical system, wiring and equipment in Class I, Division 1 and 2 locations shall be grounded as specified in Article 250 and in accordance with the requirements of 501.30(A) and (B). CMP 14 had a long discussion about deleting the informational note about referring to 250.100. During the discussion the phrase regardless of the voltage of the electrical system was considered important to minimize the possibility of an ignition; however Proposal 14-56a did not insert these words in the sections affected. 14-20 Log #188 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-61 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action taken on Proposal 1-114. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-21 Log #373 NEC-P14 Robert A. Jones, IEC Texas Gulf Coast 14-62 Revise text to read as follows: A switch complying with 501.105(B)(1) is provided so that the attachment plug is not depended on to interrupt current., unless the circuit is nonincendive field wiring, in which case the switch is not required. Action taken by CMP 14 on this proposal is not in accordance with the National Electrical Code style manual. The added phrase is really an exception to the previous phrase. 17 Page 23 of 62

14-22 Log #189 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-66 The Correlating Committee directs that the panel rewrite this Informational Note to eliminate the following phrase " it is important to consider the risk of " which is in violation of 3.1.3 of the NEC Style Manual. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-23 Log #512 NEC-P14 Edward M. Briesch, UL LLC 14-72 Accept Proposal 14-72. Revise the Exception to 501.130(B)(4) as follows: Portable lighting equipment shall comply with 501.130(A)(1). This proposal should be accepted. It does not, as the Panel Statement indicates, reduce the level of protection from Division 1 to Division 2. This exception first appears in the 1984 NEC in 501-9(b)(1). The exception states that portable lighting equipment in Class I, Division 2 need not comply with the requirements for Class I, Division 1 if it complies with Section 501-9(b)(2) below. Section 501-9(b)(2) of the 1984 NEC details the requirements for fixed lighting in Class I, Division 2. Those requirements now are found in 501.130(B)(1).The intent of Proposal 14-72 is to clarify that this was indeed the case. A review of Proposal 14-62 for the 1984 NEC and the resultant action of the Panel as documented in the National Electrical Code Technical Committee Report for the 1984 NEC clearly indicates that the intent of the proposal was to permit portable lighting on moveable stands and connected by cord to comply with the Division 2 requirements instead of the Division 1 requirements. The submitter s substantiation for Proposal 14-62 also states that this was needed for temporary lighting during periods of maintenance but at that time the Panel chose not to limit the usage in this way. The final wording was modified to conform to the style manual by Comment 14-75 from the NEC Correlating Committee. 18 Page 24 of 62

14-24 Log #886 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 19 Page 25 of 62

14-25 Log #315 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-83 Revise text to read as follows: Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in raceways as stated in 502.10(A). Fiber Optical fiber cables shall be sealed in accordance with 502.15. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 14-26 Log #316 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-88 Revise text to read as follows: Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in cable trays or any other raceway as stated in 502.10(B). Fiber Optical fiber cables shall be sealed in accordance with 502.15. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 14-27 Log #190 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-88a The Correlating Committee directs that the panel clarify the location of the list item This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-28 Log #375 NEC-P14 Robert A. Jones, Independent Electrical Contractors, Inc. 14-56a Revise text to read as follows: Regardless of the voltage of the electrical system, wiring and equipment in Class II, Division 1 and 2 locations shall be grounded as specified in Article 250 and in accordance with the requirements of 502.30(A) and (B). CMP 14 had a long discussion about deleting the informational note about referring to 250.100. During the discussion the phrase regardless of the voltage of the electrical system was considered important to minimize the possibility of an ignition; however Proposal 14-56a did not insert these words in the sections affected. 20 Page 26 of 62

14-29 Log #1259 NEC-P14 John Masarick, Independent Electrical Contractors, Inc. 14-93 I ask the panel to continue to reject this proposal. The proposal which would change 600 volts to 1000 volts. Replacing 600 volts with 1000 volts will have a major impact on installers, component manufacturers, and industry standards. Increased spacing must be considered when going from 600 volts to 1000 volts. Personal safety must also be considered. Because the proposer has not provided enough information to the public to justify and understand all the ramifications of the proposal, the committee should continue to reject the original submitters proposal. 21 Page 27 of 62

14-30 Log #887 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 22 Page 28 of 62

14-31 Log #376 NEC-P14 Robert A. Jones, Independent Electrical Contractors, Inc. 14-56a Revise text to read as follows: Regardless of the voltage of the electrical system, wiring and equipment in Class III, Division 1 and 2 locations shall be grounded as specified in Article 250 and in accordance with the requirements of 503.30(A) and (B). CMP 14 had a long discussion about deleting the informational note about referring to 250.100. During the discussion the phrase regardless of the voltage of the electrical system was considered important to minimize the possibility of an ignition; however Proposal 14-56a did not insert these words in the sections affected. 23 Page 29 of 62

14-32 Log #888 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 24 Page 30 of 62

14-33 Log #191 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-112 The Correlating Committee understands that the date references to the ISA Standards are to remain as shown in the panel action. Furthermore, it was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action taken on Proposal 14-117. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-34 Log #490 NEC-P14 Marcelo M. Hirschler, GBH International 14-114 Revise text to read as follows: Apparatus in which the circuits are not necessarily intrinsically safe themselves but that affect the energy in the intrinsically safe circuits and are relied on to maintain intrinsic safety. Examples of such Associated apparatus are may be either of the following: (1) Electrical apparatus that has an alternative-type protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used within a hazardous (classified) location I accept the concept that NEC definitions are not required to be in single sentences. However this definition contains the defined term in the last sentence and the NEC manual of style does not permit the definition to contain the defined term. Definitions are not requirements. The proposed changes eliminate the defined term. Alternatively CMP 14 might want to place the examples in an alternate suitable location in Article 504 as a requirement. The NEC Manual of Style states as follows: Definitions. Definitions shall be in alphabetical order and shall not contain the term that is being defined. Definitions shall not contain requirements or recommendations. 14-35 Log #897 NEC-P14 David Wechsler, American Chemical Council 14-111 Insert the following new text in 504.4: 504.4 Equipment. All intrinsically safe apparatus and associated apparatus shall be listed. Testing for energy for intrinsically safe circuits shall be permitted to utilize a factor of 1.5 applied to energy or, both 1.5 applied to voltage and 1.5 applied to current. Exception: Simple apparatus, as described on the control drawing, shall not be required to be listed. 504.10 Equipment Installation. In the Panel Statement the Panel states that there are at least two US documents on intrinsic safety and this suggests that either would be acceptable for use. This comment addresses currently a major issue dealing with energy and the factor being considered and merely affirms this acceptable use within the NEC. 25 Page 31 of 62

14-36 Log #192 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-117 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action taken on Proposal 14-112. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 26 Page 32 of 62

14-37 Log #889 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 27 Page 33 of 62

14-38 Log #193 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-136a The Correlating Committee directs that the panel clarify the action on this proposal. The Correlating Committee notes that this proposal incorporates changes in the first sentence that were not identified in legislative format. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-39 Log #194 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-139 It was the action of the Correlating Committee that the panel reconsider this proposal. The third sentence of the Informational Note contains a recommendation which does not comply with 3.1.3 of the NEC Style Manual. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-40 Log #1284 NEC-P14 William G. Lawrence, Jr., S. Yarmouth, MA 14-141 Add new text to read as follows: Proposed as normative text based on comment: - The available short circuit current for electrical equipment using type of protection e for the field wiring connections in Zone 1 locations shall be limited to 10,000 rms symmetrical amperes to reduce the likelihood of ignition of a flammable atmosphere by an arc during a short circuit event. The short circuit current rating of terminals and terminal blocks, according to ANSI/UL 508A, is 10,000 rms symmetrical amperes unless otherwise evaluated. To align with the ratings of these components, the available short circuit current should be limited to corresponding values. This is consistent with the approach in Article 409 for industrial control panels. The addition of this requirement to 505.7 is necessary as these terminals are used in many applications other than industrial control panels. 28 Page 34 of 62

14-41 Log #195 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-160 The Correlating Committee directs that the panel reconsider the actions taken on this proposal. The Correlating Committee notes that the panel omitted the last sentence of 505.15(B)(1)(b) without identifying this as a change. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-42 Log #317 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-163 Revise text to read as follows: (e) Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in raceways as stated in 505.15(B). These Fiber Optic optical fiber cables shall be sealed in accordance with 505.16. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 29 Page 35 of 62

14-43 Log #1267 NEC-P14 Donald W. Ankele, UL LLC 14-164 The Panel Action should be Accept in Principle. CMP 14 Task Group on 14-164 proposes a new 505.15(B)(1)(g) as follows: (g) In industrial establishments with restricted public access, where the conditions of maintenance and supervision ensure that only qualified persons service the installation, and where the cable is not subject to physical damage, Type TC-ER-HL cable listed for use in Class I, Zone 1 locations with an overall jacket of suitable material and terminated with fittings listed for the location. Informational Note: See 336.10(7) for restrictions on the installation of Type TC-ER cable. The wiring methods currently permitted by 505.15(B)(1) are not always well suited for connection to electrical equipment employing many of the Zone 1 types of protection. Because Zone 1 is not as onerous as Division 1, as Division 1 encompasses conditions that constitute both Zone 0 and Zone 1, meeting the -HL crush and impact performance requirements without requiring an armor construction requirements is acceptable because of the lower level of the risk of a flammable atmosphere being present, combined with the installation requirements in Section 336.10(7) for TC-ER cable that require continuous support and mechanical protection for Type TC-ER cable. Proposal 14-164 to add Type TC-HL cable that is dual listed as Shipboard cable into 505.15 is not viable because no installation requirements exist in Chapter 3 for Shipboard cable, whereas Type TC-ER which is intended for installation in industrial establishments has installation requirements currently found in Article 336. Listed termination fittings currently exist for both flameproof d and increased safety e types of protection. Type TC-ER-HL cable will be required meet the crush and impact resistance requirements for -HL cables that is already established in ANSI/UL 2225 for Type MC-HL, and Type ITC-HL; however, a metal sheath or armor will not be required for TC-ER-HL. Data show that some current Type TC-ER cables meet or exceed the UL 2225 Type MC-HL and Type TC-HL requirements. This comment was prepared by a Task Group consisting of Don Ankele, convener, and the following members of Code Making Panel 14: Bill Fisk, Bill Lawrence, Will McBride, Richard Holub, Jack Jamison, and John Simmons. 30 Page 36 of 62

14-44 Log #1344 NEC-P14 William E. McBride, Northern Electric Company 14-164 Modify existing Text: (1) General. In Class I, zone I locations, the wiring methods in 8(1)(8) through (8)(I)(g) shall be permitted. Add new text (g) In industrial establishments with restricted public access, where the conditions of maintenance and supervision ensure that only qualified persons service the installation, and where the cable is not subject to physical damage listed Type TC-ER-HL Cable, up to I inch in diameter, that complies with the crush and impact requirements of Type MC-HL cable, and is identified for such use with the marking Type TC-ER-HL shall be permitted. The cable shall contain separate equipment bonding conductor(s) in accordance with 250.119, and terminated with fittings listed for the application. Type TC-ER HL Cable shall be installed in accordance with the provisions of TC ER Cable in Article 336. Existing small diameter MC HL cables that are run between enclosures and instruments are easily kinked during initial installation and routine maintenance. The risk of ignition is not from the middle of cables, but from the devices and rerminations of cables where the conductor is exposed. If the Code Making panel thinks it necessary they might further restrict the circuit voltage of these TG-ER-HL Cables to be restricted to less than half of the cond uctor insulation voltage rating. The application is mostly for 24 volt instrumentation, but may also include some 120 volt utilization devices, yet the cable is rated for 600 volts. 14-45 Log #318 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-169 Revise text to read as follows: Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in cable trays or any other raceway as stated in 505.15(C). Fiber Optical fiber cables shall be sealed in accordance with 502.16. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 31 Page 37 of 62

14-46 Log #513 NEC-P14 Edward M. Briesch, UL LLC 14-180 In 505.17(B)(1) as documented in the Panel Meeting Action for Proposal 14-180, revise text as follows: Instrumentation Connections for Zone 2. To facilitate replacements, process control instruments shall be permitted to be connected through flexible cord, attachment plug, and receptacle, provided all of the following conditions apply: (1) A switch listed identified for Zone 2 is provided so that the attachment plug is not depended on to interrupt current, unless the circuit is type of protection ia, ib, or ic then the switch shall is not be required. In 505.17(B)(1) the switch should be required to be listed and not identified. Equipment in Zone 2 locations is required to be listed by 505.20(C) and there was no technical rationale provided in the Proposal or Panel Statement to take an exception to that requirement. Also, the end of the sentence was modified to conform to the Style Manual. 14-47 Log #196 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-185 The Correlating Committee directs that the panel reconsider this Informational Note to eliminate the following phrase " it is important to consider the risk of " which is in violation of 3.1.3 of the NEC Style Manual. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-48 Log #377 NEC-P14 Robert A. Jones, Independent Electrical Contractors, Inc. 14-56a Revise text to read as follows: Regardless of the voltage of the electrical system, grounding and bonding shall comply with Article 250 and the requirements in 505.25(A) and (B). CMP 14 had a long discussion about deleting the informational note about referring to 250.100. During the discussion the phrase regardless of the voltage of the electrical system was considered important to minimize the possibility of an ignition; however Proposal 14-56a did not insert these words in the sections affected. 32 Page 38 of 62

14-49 Log #892 NEC-P14 David Wechsler, American Chemical Council 14-190a Restore the following last sentence under 506.1 Scope: Combustible metallic dusts are not covered by the requirements of this article. The statement in this Article is correct. The Proposal action was based upon ANSI/ISA standard 60079-0. However, the ISA Standard 60079-0 which is a draft is taking a US deviation from the IEC 60079-0 standard by replacing that term conductive with metal which differs from that found in its Group IIIC definition. The IEC 60079-0 standard under 3.18.1.1 defines as combustible dust with electrical resistivity equal to or less than 10 3 ohm m. There also is a note: Note: IEC 61241-2-2 contains the test method for determining the electrical resistivity of dusts. which suggests that a simple replacement of the term metal for conductive may not reflect the same potential hazards. The NEC rejected defining combustible dust using resistivity. 33 Page 39 of 62

14-50 Log #890 NEC-P14 David Wechsler, American Chemical Council 14-11b Do not add a new definition to 500.2, 505.2 and 506.2 reading: Cord Connector. A fitting intended to terminate a cord to a box or similar device and reduce the strain at points of termination and may include an explosionproof, a dust ignition proof, or a flameproof seal. Under 501.140 (B) (4) change cord connector to cord fitting as shown below: (4) In Division 1 locations or in Division 2 locations where the boxes, fittings, or enclosures are required to be explosionproof, the cord shall be terminated with a cord fitting connector or attachment plug listed for the location or a cord fitting connector installed with a seal listed for the location. In Division 2 locations where explosionproof equipment is not required, the cord shall be terminated with a listed cord fitting connector or listed attachment plug. Under 502.140 (B) (4) change cord connector to fitting as shown below: (4) In Division 1 locations, the cord shall be terminated with a cord fitting connector listed for the location or a listed cord fitting connector installed with a seal listed for the location. In Division 2 locations, the cord shall be terminated with a listed dusttight cord fitting connector. Under 503.140 (B) (4) change cord connector to fitting as shown below: (4) Be terminated with a listed dusttight cord fitting connector. Under 505.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the type of protection where the flexible cord enters boxes, fittings, or enclosures that are required to be explosionproof or flameproof. Under 506.17(5) change cord connector to fitting as shown below: (5) Be terminated with a listed cord fitting connector that maintains the protection technique of the terminal compartment. NOTE: Separate comments were submitted for each of the respective sections shown above to comply with the Style Manual. This proposal was offered to attempt to correct the incorrect use of the term connector. However the action taken simply makes this problem more unclear as the term cord connector is not appropriate in this case and a different term that includes the word "fitting" should be used as part of the term, not to describe something different. The action addressed in the proposed text revisions provides appropriate solutions. ANSI/UL 514B is not limited for use in hazardous (classified) areas. The term fitting is widely used in UL product standards to refer to these and other types of products that are used to secure wiring methods and cords to equipment. The actual title of UL 514B uses the term fittings, not connectors "Conduit, Tubing, and Cable Fittings". Section 1.2 of UL 514B uses the phrase "fittings for flexible cord" Interestingly 1.4 states "These requirements do not cover FITTINGS intended for use in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70, the Canadian Electrical Code (CEC), Part I, CSA C22.1, and the Standard for Electrical Installations, NOM-001-SEDE." The term cord connector is used in other places in the NEC as a wiring device such as in 210.50(A) where it permits a "cord connector" to be considered a receptacle outlet. Section 626.2 defines a cord connector as a device for establishing a connection. The term fitting is commonly used in the NEC and product standards related to flexible cords products that are attached to enclosures. Section 400.7(B) uses the term cord connector body as device used to energize an attachment plug. The term "cord fitting" as indicated should be used in sections 501.140(B)(4), 502.140(4), 503.140(4), 505.17(5), 506.17(5) and anywhere else the term is used to describe the fitting. As presently used in these articles the term cord connector is confusing whether the term is defined differently (for no good reason) or not. The term "cord connector" is commonly used in the field to describe a wiring device that is connected to a cord. Users of Chapter 5 are not exempt from the requirements in Chapters 1 through 4, chapter 5 requirements can supplement or modify the general rules but creating using the same term to define different items should not be done and will create confusion and likely misinterpretation of the associated requirements. The term "fitting" is used in many other NEC sections to describe the product used to secure a cord to an enclosure. 34 Page 40 of 62

14-51 Log #1179 NEC-P14 Eliana Brazda, ISA 14-194 Revise text to read as follows: ANSI/ISA-12.12.01-20112, Nonincendive Electrical Equipment for Use in Class I and II, Division 2, and Class III, Divisions 1 and 2 Hazardous (Classified) Locations. Change the ISA standards date of publication to the current publication date. 14-52 Log #491 NEC-P14 Marcelo M. Hirschler, GBH International 14-191 Revise text to read as follows: Apparatus in which the circuits are not necessarily nonincendive themselves but that affect the energy in nonincendive field wiring circuits and are relied upon to maintain nonincendive energy levels. Associated nonincendive field wiring Examples of such apparatus are may be either of the following: (1) Electrical apparatus that has an alternative type of protection for use in the appropriate hazardous (classified) location (2) Electrical apparatus not so protected that shall not be used in a hazardous (classified) location Associated nonincendive field wiring apparatus has designated associated nonincendive field wiring apparatus connections for nonincendive field wiring apparatus and may also have connections for other electrical apparatus. I accept the concept that NEC definitions are not required to be in single sentences. However this definition contains the defined term in the last sentence and the NEC manual of style does not permit the definition to contain the defined term. Definitions are not requirements. The proposed changes eliminate the defined term. Alternatively CMP 14 might want to place the examples in an alternate suitable location in Article 506 as a requirement. The NEC Manual of Style states as follows: Definitions. Definitions shall be in alphabetical order and shall not contain the term that is being defined. Definitions shall not contain requirements or recommendations. 14-53 Log #574 NEC-P14 Code-Making Panel 14, 14-192a In 506.2 replace the current definition of Combustible Dust with the following: Combustible Dust. Dust particles of 500 microns or smaller (material passing a U.S. No. 35 Standard Sieve as defined in ASTM E 11, Standard Specification for Wire Cloth and Sieves for Testing Purposes) are considered to present a dust fire or dust explosion hazard unless determined otherwise. (See ASTM E 1226 or ISO 6184/1). [499:3.3.3] Definition is extracted from NFPA 499 and the definition in the 2012 Edition of NFPA 499 has been revised. 35 Page 41 of 62

14-54 Log #197 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-193 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action on Proposal 14-194. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-55 Log #198 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-194 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action on Proposal 14-193. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-56 Log #893 NEC-P14 David Wechsler, American Chemical Council 14-200a Delete new 506.6 and renumber accordingly. First the Committee under Log 14-111 stated that some language in a Product Standard belongs in a product standard and not an installation code, like the NEC. Claiming that product standards include a marking of the dust group, does not provide substantiation to reflect the basis for these specific defined terms in the NEC. IEC and ISA use the terms Group IIIC, IIIB and IIIA. However these terms have different definitions. For example the IEC 60079-0 standard under paragraph 4.3 defines Group IIIC as: conductive dust and under 3.18.1.1 defines conductive dust as combustible dust with electrical resistivity equal to or less than 103 ohm m. There also is a note: Note: IEC 61241-2-2 contains the test method for determining the electrical resistivity of dusts. which suggests that a simple replacement of the term metal for conductive may not reflect the same potential hazards. The ISA 60079-0 draft standard under paragraph 4.3 contains Note 2, a US deviation from the IEC standard, which states: The 2011 NEC does not recognize the identification of location or equipment as Group IIIA, IIIB, or IIIC, but identifies equipment suitable for Zone 20, 21 and 22 and no separate differentiation is made of combustible dusts or ignitable fibers. Lastly based upon the NFPA Standards Council, Jan. 1995, 95-6 ruling, it is the responsibility for group classification of materials to the Technical Committee on Electrical Equipment in Chemical Atmospheres (EECA) and not the NEC CMP-14. NFPA 499 which is under the EECA does not include these defined terms. 36 Page 42 of 62

14-57 Log #894 NEC-P14 David Wechsler, American Chemical Council 14-204a Delete 506.9( C)(1) and re-number accordingly. First the Committee under Log 14-111 stated that some language in a Product Standard belongs in a product standard and not an installation code, like the NEC. Claiming that product standards include a marking of the dust group, does not provide substantiation to reflect the basis for these specific defined terms in the NEC. Second, the NFPA Standards Council, Jan. 1995, 95-6 ruling, stated it is the responsibility for group classification of materials to the Technical Committee on Electrical Equipment in Chemical Atmospheres (EECA) and not the NEC CMP-14. NFPA 499 which is under the EECA does not include these defined terms. 14-58 Log #895 NEC-P14 David Wechsler, American Chemical Council 14-205a Delete 506.9( C) (2) and re-number accordingly. First the Committee under Log 14-111 stated that some language in a Product Standard belongs in a product standard and not an installation code, like the NEC. Claiming that product standards include a marking of the dust group, does not provide substantiation to reflect the basis for these specific defined terms in the NEC. Second, the NFPA Standards Council, Jan. 1995, 95-6 ruling, stated it is the responsibility for group classification of materials to the Technical Committee on Electrical Equipment in Chemical Atmospheres (EECA) and not the NEC CMP-14. NFPA 499 which is under the EECA does not include these defined terms. 14-59 Log #319 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-219 Revise text to read as follows: (e) Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in raceways as stated in 506.15(A). These Fiber Optic optical fiber cables shall be sealed in accordance with 506.16. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 37 Page 43 of 62

14-60 Log #320 NEC-P14 Frank W. Peri, Communications Cable & Connectivity Assoc. 14-223 Revise text to read as follows: Fiber Optical fiber cables of the types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in cable trays or any raceway as stated in 506.15(C). Fiber Optical fiber cables shall be sealed in accordance with 506.16. This is an editorial comment. Terminology should be consistent throughout the code. Article 770 covers optical fiber cables not fiber optic cables. There are many places this change needs to be made to correlate with Article 770. 14-61 Log #896 NEC-P14 David Wechsler, American Chemical Council 14-225 Delete new 520.6 (D) and renumber accordingly. Again if the prior action to delete the Article 506 Groups is accepted because based upon the NFPA Standards Council, Jan. 1995, 95-6 ruling, it is the responsibility for group classification of materials to the Technical Committee on Electrical Equipment in Chemical Atmospheres (EECA) and not the NEC CMP-14. NFPA 499 which is under the EECA does not include these defined terms, then this action as stated in this proposal serves no purpose. Also a was stated in the Panel Statement, Product Standard belongs in a product standard and not an installation code, like the NEC. Claiming that product standards include a marking of the dust group, does not provide substantiation to reflect the basis for these specific defined terms in the NEC. IEC and ISA use the terms Group IIIC, IIIB and IIIA. However these terms have different definitions. For example the IEC 60079-0 standard under paragraph 4.3 defines Group IIIC as: conductive dust and under 3.18.1.1 defines conductive dust as combustible dust with electrical resistivity equal to or less than 103 ohm m. There also is a note: Note: IEC 61241-2-2 contains the test method for determining the electrical resistivity of dusts. which suggests that a simple replacement of the term metal for conductive may not reflect the same potential hazards. The ISA 60079-0 draft standard under paragraph 4.3 contains Note 2, a US deviation from the IEC standard, which states: The 2011 NEC does not recognize the identification of location or equipment as Group IIIA, IIIB, or IIIC, but identifies equipment suitable for Zone 20, 21 and 22 and no separate differentiation is made of combustible dusts or ignitable fibers. Lastly based upon the NFPA Standards Council, Jan. 1995, 95-6 ruling, it is the responsibility for group classification of materials to the Technical Committee on Electrical Equipment in Chemical Atmospheres (EECA) and not the NEC CMP-14. NFPA 499 which is under the EECA does not include these defined terms. 38 Page 44 of 62

14-62 Log #378 NEC-P14 Robert A. Jones, Independent Electrical Contractors, Inc. 14-56a Revise text to read as follows: Regardless of the voltage of the electrical system, grounding and bonding shall comply with Article 250 and the requirements in 506.25(A) and (B). CMP 14 had a long discussion about deleting the informational note about referring to 250.100. During the discussion the phrase regardless of the voltage of the electrical system was considered important to minimize the possibility of an ignition; however Proposal 14-56a did not insert these words in the sections affected. 14-63 Log #199 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-234 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action taken on Proposal 1-114. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-64 Log #200 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-235 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action taken on Proposal 1-114. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-65 Log #201 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-236 It was the action of the Correlating Committee that this proposal be reconsidered and correlated with the action on Proposal 1-114. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 39 Page 45 of 62

14-66 Log #202 NEC-P14 Technical Correlating Committee on National Electrical Code, 14-243 The Correlating Committee directs Code-Making Panel 14 to resolve correlation issues/conflicts with NFPA 33 and NFPA 34 rather than refer to an outdated version of these two documents. The Correlating Committee advises that using outdated NFPA references is not permitted. See the Correlating Committee Note on Proposal 14-244. This is a direction from the National Electrical Code Technical Correlating Committee in accordance with 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects. 14-67 Log #1268 NEC-P14 Donald W. Ankele, UL LLC 14-244 The Panel Action should be Accept in Principle. CMP-14 Finishing Processes Committee Task Group on 14-244 proposes a revised Article 516 as follows: ******Insert Include Here****** For the 2011 NEC, the Informational Notes in Article 516 were revised to the 2011 editions of NFPA 33 and NFPA 34. The actual text in Article 516, however, remained the extracted text from 2007. Proposal 14-244 and others proposed partial revisions to 516, but no proposal addressed all of the parts of 516 that were 2007 extracted text. The TCC directed that a task group be formed consisting of members of CMP14 and the Committee on Finishing Processes. This comment was prepared by a Task Group consisting of the following members: CMP14 Don Ankele, UL, Task Group Chair Bill Lawrence, FM Global Jeremy Neagle, US Bureau of ATF Ed Briesch, UL LLC Fred Walker, US Department of the Air Force 40 Page 46 of 62

FORM FOR COMMENT FOR 2014 NATIONAL ELECTRICAL CODE INSTRUCTIONS PLEASE READ CAREFULLY Type or print legibly. Use a separate copy for each comment. Limit each comment to a SINGLE section. All comments must be received by NFPA by 5 p.m., EDST, Wednesday, October 17, 2012, to be considered for the 2014 National Electrical Code. Comments received after 5:00 p.m., EDST, Wednesday, October 17, 2012, will be returned to the submitter. For technical assistance, please call NFPA at 1-800-344-3555. FOR OFFICE USE ONLY Log #: Date Rec d: Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: If choosing the download option, you must view the ROP/ROC from our website; no copy will be sent to you.) Date 10/17/2012 Name Don Ankele Tel. No. 847 664-2965 Company UL LLC Email Donald.W.Ankele@ul.com Street Address 333 Pfingsten Rd. City Northbrook State IL Zip 60062 ***If you wish to receive a hard copy, a street address MUST be provided. Deliveries cannot be made to PO boxes. Please indicate organization represented (if any) 1. Section/Paragraph Article 516 (all) 2. Comment on Proposal No. (from ROP): 14-244 3. Comment recommends (check one): new text revised text deleted text 4. Comment (include proposed new or revised wording, or identification of wording to be deleted): [Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording). The Panel Action should be Accept in Principle. CMP 14/Finishing Processes Committee Task Group on 14-244 proposes a revised Article 516 as follows: ARTICLE 516 Spray Application, Dipping, and Coating, and Printing Processes Using Flammable or Combustible Materials Staff Liaison s Note: New text is shown underlined. Deleted text is shown shaded. Informational Note: Text that is followed by a reference in brackets has been extracted from NFPA 33-2011, Standard for Spray Application Using Flammable and Combustible Materials, or NFPA 34-2011, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids. Only editorial changes were made to the extracted text to make it consistent with this Code. 516.1 Scope. This article covers the regular or frequent application of flammable liquids, combustible liquids, and combustible powders by spray operations and the application of flammable liquids, or combustible liquids at temperatures above their flashpoint, by dipping, coating, printing or other means. Informational Note: For further information regarding safeguards for these processes, such as fire protection, posting of warning signs, and maintenance, see NFPA 33-2011, Standard for Spray Application Using Flammable and Combustible Materials, and NFPA 34-2011, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids. For additional information regarding ventilation, see NFPA 91-2010, Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and Noncombustible Particulate Solids. 516.2 Definitions. For the purpose of this article, the following definitions shall apply. Flash-Off Area. An open or enclosed area after a spray application process where vapors are released due to exposure to ambient air or a heated atmosphere. [33:3.3.1.1] Limited Finishing Workstation. An apparatus that is capable of confining the vapors, mists, residues, dusts, or deposits that are generated by a spray application process and that meets the requirements of Section 14.3 of NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials, but does not meet the requirements of a spray booth or spray room, as herein defined. [33:3.3.15.1] Resin Application Area. Any area in which polyester resins or gelcoats are spray applied. [33:3.3.1.2] Spray Area. Any fully enclosed, partly enclosed, or unenclosed area in which ignitable quantities of flammable or combustible vapors, mists, residues, dusts, or deposits are present due to the operation of spray processes, including (1) any area in the direct path of a spray application process; (2) the interior of a spray booth or spray room or limited finishing workstation, as herein defined; (3) the interior of any exhaust plenum, eliminator section, or scrubber section; (4) the interior of any exhaust duct or exhaust stack leading from a spray application process; (5) the interior of any air recirculation filter house or enclosure, including secondary recirculation particulate filters; (6) any solvent concentrator (pollution abatement) unit or solvent recovery (distillation) unit. The following are not considered to be a part of the spray area: (1) fresh air make-up units; (2) air supply ducts and air supply plenums; Page 47 of 62

(3) recirculation air supply ducts downstream of secondary filters; (4) exhaust ducts from solvent concentrator (pollution abatement) units. [33: 3.3.2.3] Informational Note: Unenclosed spray areas are normally locations outside of buildings or are localized operations within a larger room or space. Such are normally provided with some local vapor extraction/ventilation system. In automated operations, the area limits are shall be the maximum area in the direct path of spray operations. In manual operations, the area limits are the maximum area of spray when aimed at 180 90 degrees to the application surface. Spray Booth. A power-ventilated enclosure for a spray application operation or process that confines and limits the escape of the material being sprayed, including vapors, mists, dusts, and residues that are produced by the spraying operation and conducts or directs these materials to an exhaust system. [33:3.3.14] Informational Note: A spray booth is an enclosure or insert within a larger room used for spray/coating/dipping applications. A spray booth may be fully enclosed or have open front or face and may include separate conveyor entrance and exit. The spray booth is provided with a dedicated ventilation exhaust but may draw supply air from the larger room or have a dedicated air supply. Spray Room. A power-ventilated fully enclosed room used exclusively for open spraying of flammable or combustible materials. A spray room is a purposefully enclosed room built for spray/coating/dipping applications provided with dedicated ventilation supply and exhaust. Normally the room is configured to house the item to be painted, providing reasonable access around the item/process. Depending on the size of the item being painted, such rooms may actually be the entire building or the major portion thereof. [33:3.3.15] Unenclosed Spray Area. Any spray area that is not confined by a limited finishing workstation, spray booth, or spray room, as herein defined. [33:3.3.2.3.2 ] 516.3 Classification of Locations. Classification is based on dangerous quantities of flammable vapors, combustible mists, residues, dusts, or deposits that are present or might be present in quantities sufficient to produce ignitable or explosive mixtures with air. (A) Zone Classification of Locations. (1) For the purposes of this Article, the Zone system of electrical area classification shall be applied as follows: (a) The inside of open or closed containers or vessels shall be considered a Class I, Zone 0 location. (a) A Class I, Division 1 location shall be permitted to be alternatively classified as a Class I, Zone 1 location. (b) A Class I, Division 2 location shall be permitted to be alternatively classified as a Class I, Zone 2 location. (c) A Class II, Division 1 location shall be permitted to be alternatively classified as a Zone 21 location. (d) A Class II, Division 2 location shall be permitted to be alternatively classified as a Zone 22 location. [33: 6.2.2] (2) For the purposes of electrical area classification, the Division system and the Zone system shall not be intermixed for any given source of release. [33:6.2.3] (3) In instances of areas within the same facility classified separately, Class I, Zone 2 locations shall be permitted to abut, but not overlap, Class I, Division 2 locations. Class I, Zone 0 or Zone 1 locations shall not abut Class I, Division 1 or Division 2 locations. [70:505.7(B)] [33:6.2.4] (4) Open flames, spark-producing equipment or processes, and equipment whose exposed surfaces exceed the autoignition temperature of the material being sprayed shall not be located in a spray area or in any surrounding area that is classified as Division 2, Zone 2, or Zone 22. Exception: This requirement shall not apply to drying, curing, or fusing apparatus. [33:6.2.5] (5) Any utilization equipment or apparatus that is capable of producing sparks or particles of hot metal and that is located above or adjacent to either the spray area or the surrounding Division 2, Zone 2, or Zone 22 areas shall be of the totally enclosed type or shall be constructed to prevent the escape of sparks or particles of hot metal. [33: 6.2.6] (B) (A) Class I, Division 1 or Class I, Zone 0 Locations. The following spaces shall be considered Class I, Division 1, or Class I, Zone 0, as applicable: (1) The interior of any open or closed container or vessel of a flammable liquid (2) The interior of any dip tank or coating tank Page 48 of 62

(3) The interior of any ink fountain, ink reservoir, or ink tank Informational Note: For additional guidance and explanatory diagrams, see Chapter 6 4.3.5 of NFPA 33-2011, Standard for Spray Application Using Flammable or Combustible Materials, and Chapter 6 Sections 4.2, 4.3, and 4.4 of NFPA 34-2011, Standard for Dipping, Coating, and Printing Processes Using Flammable or Combustible Liquids. (C) (B) Class I, Division 1; Class I, Zone 1; or Class II, Division 1; or Zone 21 Locations. The following spaces shall be considered Class I, Division 1, or Class I, Zone 1, or Class II, Division 1, or Zone 21 locations, as applicable: (1) The interior of spray booths and rooms except as specifically provided in 516.3(D). (2) The interior of exhaust ducts. (3) Any area in the direct path of spray operations. (4) For open dipping and coating operations, all spaces within a 1.5-m (5-ft) radial distance from the vapor sources extending from these surfaces to the floor. The vapor source shall be the liquid exposed in the process and the drainboard, and any dipped or coated object from which it is possible to measure vapor concentrations exceeding 25 percent of the lower flammable limit at a distance of 300 mm (1 ft), in any direction, from the object as in Figure 516.3(D)(6)(a). (5) Sumps, pits, or belowgrade channels within 7.5 m (25 ft) horizontally of a vapor source. If the sump, pit, or channel extends beyond 7.5 m (25 ft) from the vapor source, it shall be provided with a vapor stop or it shall be classified as Class I, Division 1 for its entire length. (6) All space in all directions outside of but within 900 mm (3 ft) of open containers, supply containers, spray gun cleaners, and solvent distillation units containing flammable liquids. (7) For limited finishing workstations, the area inside the curtains or partitions. (See Figure 516.3(D)(5).) (D) (C) Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22 Locations. The following spaces shall be considered Class I, Division 2; or Class I, Zone 2; or Class II, Division 2; or Zone 22 as applicable. (1) Unenclosed Spray Processes Open Spraying. For unenclosed open spraying, all space outside of but within 6 m (20 ft) horizontally and 3 m (10 ft) vertically of the Class I, Division 1 or Class I, Zone 1 location as defined in 516.3(A) and not separated from it by partitions. See Figure 516.3(D)(C)(1). [33:6.5.1] (2) Closed-Top, Open-Face, and Open-Front Spraying Booths and Spray Rooms. If spray application operations are conducted within a closed-top, open-face, or open-front booth or room, as shown in Figure 516.3(D)(2), any electrical wiring or utilization equipment located outside of the booth or room but within 915mm (3 ft) of any opening the boundaries designated as Division 2 or Zone 2 in Figure 516.3(C)(2) shall be suitable for Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22 locations, whichever is applicable. The Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22 locations shown in Figure 516.3(D)(C)(2) shall extend from the edges of the open face or open front of the booth or room in accordance with the following: Informational Note: For both interlocked and non-interlocked exhaust ventilation systems, the Division 2, Zone 2 or Zone 22 location extends 915 mm (3 ft) horizontally and 915 mm (3 ft) vertically from the open face or open front of the booth or room, as shown in Figure 516.3(D)(2). Figure 516.3(D)(C)(1) Electrical Area Classification for Unenclosed Open Spray Areas. [33:Figure 6.5.1] Page 49 of 62

Add or Zone 21 and or Zone 22 to respective legends Figure 516.3(D)(C)(2) Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22 Locations Adjacent to a Closed Top, Open Face, or Open Front Spray Booth or Room. [33:Figure 6.5.2] (a) If the exhaust ventilation system is interlocked with the spray application equipment, the Division 2 or Zone 2 location shall extend 1.5 m (5 ft) horizontally and 900 mm (3 ft) vertically from the open face or open front of the booth or room, as shown in Figure 516.3(C)(2), top. (b) If the exhaust ventilation system is not interlocked with the spray application equipment, the Division 2 or Zone 2 location shall extend 3 m (10 ft) horizontally and 900 mm (3 ft) vertically from the open face or open front of the booth or room, as shown in Figure 516.3(C)(2), bottom. For the purposes of this subsection, interlocked shall mean that the spray application equipment cannot be operated unless the exhaust ventilation system is operating and functioning properly and spray application is automatically stopped if the exhaust ventilation system fails. [33:6.5.2.2] (3) Open-Top Spraying Booths. For spraying operations conducted within an open top spray booth, the space 915mm 900 mm (3 ft) vertically above the booth and within 915mm 900 mm (3 ft) of other booth openings shall be considered Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22. [33:6.5.3] (4) Enclosed Spray Booths and Spray Rooms. For spraying operations confined to an enclosed spray booth or Page 50 of 62

room, electrical area classification shall be as follows: the space within 900 mm (3 ft) in all directions from any openings shall be considered Class I, Division 2; or Class I, Zone 2; or Class II, Division 2 as shown in Figure 516.3(C)(4). [33:6.5.4] (A) The area within 915 mm (3 ft) of any opening shall be classified as Class I, Division 2; Class I, Zone 2; Class II, Division 2; or Zone 22 locations, whichever is applicable, as shown in Figure 516.3(D)(4). (B) Where exhaust air is recirculated both of the following shall apply: (1) The interior of any recirculation path from the secondary particulate filters up to and including the air supply plenum shall be classified as Class I, Division 2; Class I, Zone 2; Class II, Division 2; or Zone 22 locations, whichever is applicable. (2) The interior of fresh air supply ducts shall be unclassified. (C) Where exhaust air is not recirculated, the interior of fresh air supply ducts and fresh air supply plenums shall be unclassified. Figure 516.3(D)(C)(4) Class I, Division 2; Class I, Zone 2; or Class II, Division 2; or Zone 22 Locations Adjacent to an Enclosed Spray Booth or Spray Room. [33:Figure 6.5.4] (5) Limited Finishing Workstations. For limited finishing workstations, the area inside the 915 mm (3-ft) space horizontally and vertically beyond the volume enclosed by the outside surface of the curtains or partitions shall be classified as Class I, Division 2; Class I, Zone 2; Class II, Division 2; or Zone 22, as shown in Figure 516.3(D)(5) Figure 516.3(D)(5). Class I, Division 2; Class I, Zone 2; Class II, Division 2; or Zone 22 Locations Adjacent to a Limited Finishing Workstation. [33:Figure 14.3.5.1] Page 51 of 62

(5) Tanks and Drain Boards Surrounding Space. For dip tanks and drain boards, the 914-mm (3-ft) space surrounding the Class I, Division 1 or Class I, Zone 1 location shall be as defined in 516.3(A)(4) and as shown in Figure 516.3(D)(C)(5). [34:6.4.4] (6) Dip Tanks, and Drain Boards Space Above Floor. For dip tanks, and drain boards, the space 900 mm (3 ft) above the floor and extending 6 m (20 ft) horizontally in all directions from the Class I, Division 1 or Class I, Zone 1 location. Exception: This space shall not be required to be considered a hazardous (classified) location where the vapor source area is 0.46 m 2 (5 ft 2 ) or less and where the contents of the open tank trough or container do not exceed 19 L (5 gal). In addition, the vapor concentration during operation and shutdown periods shall not exceed 25 percent of the lower flammable limit outside the Class I location specified in 516.3(B)(4). [34:6.4.4 Exception] (6) Areas Adjacent to Open Dipping and Coating Processes. Electrical wiring and electrical utilization equipment located adjacent to open processes shall meet the requirements of (a) through (c) and Figures 516.3(D)(6)(a), 516.3(D)(6)(b), 516.3(D)(6)(c), 516.3(D)(6)(d), or 516.3(D)(6)(e), whichever is applicable. [34:6.4] (a) Electrical wiring and electrical utilization equipment located in any sump, pit, or below grade channel that is within 7620 mm (25 ft) horizontally of a vapor source, as defined by this standard, shall be suitable for Class I, Division 1 or Class I, Zone 1 locations. If the sump, pit, or channel extends beyond 7620 mm (25 ft) of the vapor source, it shall be provided with a vapor stop, or it shall be classified as Class I, Division 1 or Class I, Zone 1 for its entire length. [34:6.4.1] (b) Electrical wiring and electrical utilization equipment located within 1525 mm (5 ft) of a vapor source shall be suitable for Class I, Division 1 or Class I, Zone 1 locations. The space inside a dip tank, ink fountain, ink reservoir, or ink tank shall be classified as Class I, Division 1 or Class I, Zone 0, whichever is applicable. [34:6.4.2] (c) Electrical wiring and electrical utilization equipment located within 915 mm (3 ft) of the Class I, Division 1 or Class I, Zone 1 location described in 6.4.2 shall be suitable for Class I, Division 2 or Class I, Zone 2 locations, whichever is applicable. [34:6.4.3] (d) The space 915 mm (3 ft) above the floor and extending 6100 mm (20 ft) horizontally in all directions from the Class I, Division 1 or Class I, Zone 1 location described in 6.4.3 shall be classified as Class I, Division 2 or Class I, Zone 2, and electrical wiring and electrical utilization equipment located within this space shall be suitable for Class I, Division 2 or Class I, Zone 2 locations, whichever is applicable. [34:6.4.4] Exception: This space shall be permitted to be unclassified for purposes of electrical installations if the surface area of the vapor source does not exceed 0.5 m2 (5 ft2), the contents of the dip tank, ink fountain, ink reservoir, or ink tank do not exceed 19 L (5 gal), and the vapor concentration during operating and shutdown periods does not exceed 25 percent of the lower flammable limit. Figure 516.3(D)(6)(a)(C)(5) Electrical Area Classification for Open Dipping and Coating Processes Page 52 of 62

Without Vapor Containment or Ventilation. [34:Figure 6.4(a)] Figure 516.3(D)(6)(b)(C)(5) Electrical Area Classification for Open Dipping and Coating Processes With Peripheral Vapor Containment and Ventilation Vapors Confined to Process Equipment. [34:Figure 6.4(b)] Figure 516.3(D)(6)(c)(C)(5) Electrical Area Classification for Open Dipping and Coating Processes With Partial Peripheral Vapor Containment and Ventilation Vapors NOT Confined to Process Equipment. [34:Figure 6.4(c)] Page 53 of 62

Figure 516.3(D)(6)(d)(C)(5) Electrical Area Classification for Open Dipping and Coating Processes With Partial Peripheral Vapor Containment and Ventilation Vapors Confined to Process Equipment. [34:Figure 6.4(d)] Figure 516.3(D)(6)(e)(C)(5) Electrical Area Classification for a Typical Printing Process. [34:Figure 6.4(e)] Page 54 of 62

(7)(D) Enclosed Dipping and Coating Operations. Areas adjacent to enclosed dipping and coating processes shall be classified in accordance with 516.3(D)(1) and Figure 516.3(D)(7). The space adjacent to an enclosed dipping or coating process or apparatus shall be considered unclassified. [34:6.5.3] Exception: The space within 915 mm (3 ft) in all directions from any opening in the enclosures shall be classified as Class I, Division 2 or Class I, Zone 2, as applicable. [34:6.5.2] (1) The interior of any enclosed dipping or coating process or apparatus shall be a Class I, Division 1 or Class I, Zone 1 location, and electrical wiring and electrical utilization equipment located within this space shall be suitable for Class I, Division 1 or Class I, Zone 1 locations, whichever is applicable. The area inside the dip tank shall be classified as Class I, Division 1 or Class I, Zone 0, whichever is applicable. [34:6.5.1] Figure 516.3(D)(7) Electrical Area Classification Around an Enclosed Dipping or Coating Process [34:Figure 6.5] (8) Open Containers. All space in all directions within 600 mm (2 ft) of the Division 1 or Zone 1 area surrounding open containers, supply containers, spray gun cleaners, and solvent distillation units containing flammable liquids, as well as the area extending 1.5 m (5 ft) beyond the Division 1 or Zone 1 area up to a height of 460 mm (18 in.) above the floor or grade level. [33:6.5.5 6.6.2] (E) Adjacent Locations. Adjacent locations that are cut off from the defined Class I or Class II locations by tight partitions without communicating openings, and within which flammable vapors or combustible powders are not likely to be released, shall be unclassified. (F) Unclassified Locations. Locations using drying, curing, or fusion apparatus and provided with positive mechanical ventilation adequate to prevent accumulation of flammable concentrations of vapors, and provided with effective interlocks to de-energize all electrical equipment (other than equipment identified for Class I locations) in case the ventilating equipment is inoperative, shall be permitted to be unclassified where the authority having jurisdiction so judges. Informational Note: For further information regarding safeguards, see NFPA 86-2011, Standard for Ovens and Furnaces. 516.4 Wiring and Equipment in Class I Locations. (A) Wiring and Equipment Vapors. All electrical wiring and equipment within the Class I location (containing vapor only not residues) defined in 516.3 shall comply with the applicable provisions of Article 501 or Article 505, as applicable. (B) Wiring and Equipment Vapors and Residues. Unless specifically listed for locations containing deposits of dangerous quantities of flammable or combustible vapors, mists, residues, dusts, or deposits (as applicable), there shall be no electrical equipment in any spray area as herein defined whereon deposits of combustible residue may readily accumulate. All electrical wiring shall be per 516.4(A)., except wiring in rigid metal conduit, intermediate metal conduit, Type MI cable, or in metal boxes or fittings containing no taps, splices, or terminal connections. [33:6.4.2] (C) Illumination. (1) Luminaires, like that shown in Figure 516.4(C)(1), that are attached to the walls or ceiling of a spray area but Page 55 of 62