NEC 2017 Changes and Their Effect Upon the ICT Industry

Transcription

1 NEC 2017 Changes and Their Effect Upon the ICT Industry

2 Today s Presenters John Kacperski, RCDD, OSP, CDT Chair of BICSI Standards BICSI Representative on NFPA 70-CMP 16 Richard S. Anderson, RCDD, CDT, CDCT, CIBET BICSI Representative on NFPA 70-CMP 3

3 Before We Begin, Your BICSI Codes Subcommittee Established 1986

4 Our Mission Monitor codes that affect the building & ICT communities Influence codes development as necessary to ensure safety while minimizing undue requirements

5 Who We Are Volunteer BICSI members who willingly give of our time and resources Interested parties from all perspective of the ICT industry

6 What We Do Initiate input into certain specific national and international codes development processes. Provide BICSI's collective perspective Serve as an information resource to BICSI membership and volunteer activities

7 Who We Monitor NFPA NFPA 70, 72, 75 and more Canadian Standards Association (CSA) BSI CSA C22.1, CEC IEEE IEEE C2, NESC OSHA FCC International Code Congress (ICC)

8 Voting Members of NFPA 70 CMP 3 Articles 300, 720, 725, 728, 760 CMP 16 Articles 770, 800, 810, 820, 830, 840

9 When We Meet Every Monday morning of an US BICSI Conference. Occasionally with the Canadian Conference Web conferences as issues and topics arise All are welcome to join us

10 NFPA National Electrical Code

11 General Statistics 4,012 initial public inputs 1,235 first revisions 1,513 public comments issued on first revisions Created 559 Second Revisions There were 9 articles proposed and 5 new articles appear in the 2017 NEC.

12 New Articles Article 425 Fixed Resistance and Electrode Industrial Process Heating Equipment Article 691 Large-Scale Photovoltaic (PV) Electric Supply Stations Article 706 Energy Storage Systems Article 711 Stand-Alone Systems For power production sources operating in stand-alone mode Article 712 Direct Current Microgrids (DC Microgrids) Alternative (e.g., wind, solar) power distribution system

13 Chapter 1: General

14 NEC Scope Expansion Article 90.2(A) The Code covers installation and removal of Note: NEC already required removal of temporary power wiring and abandoned communications cables.

15 Code Arrangement Clarification Article 90.3 Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions and may supplement or modify the general requirements in Chapters 1 through 7.

16 Definitions: Hazardous Locations (Art 500) Article (Hazardous Locations) Definitions moved to Article 100 as applied to Hazardous (Classified) Locations add to end of effected terms New Definition Cord Connector (as applied to Hazardous (Classified) Locations) 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-ignitionproof, or a flameproof seal..

17 Definition: Accessible, Readily (Readily Accessible) Article 100 Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to take actions such as to use tools (other than keys), to climb over or under, to remove obstacles, or to resort to portable ladders, and so forth.

18 Definitions: Building vs. Structure Article 100 Building - A structure that stands alone or that is separated from adjoining structures by fire walls. Structure - That which is built or constructed, other than equipment.

19 Requirements for Electrical Installations Article 110.3(C) New subsection Clarifies that listing (product certification) be performed by recognized qualified electrical testing laboratories Contains informational note indicates that OSHA has a list of qualified laboratories.

20 New: Working Space for Limited Access Article (A)(4) Examples: Crawl spaces, Above suspended ceilings Working Space (Clearance Volume) Minimum width of access: larger value of equipment size or 762 mm (30 in) Minimum depth of access: 900 mm (3 ft) Maximum height of the working = height necessary to install equipment

21 New: Working Space for Limited Access Article (A)(4) Horizontal ceiling structural member/access panel permitted in working space Suspended Ceilings Opening is mm (22 22 in) Crawl spaces accessible opening is mm (22 30 in)

22 Article 250: Grounding and Bonding

23 Article Article 250 Circuits not to be grounded Addition of Class 2 load side circuits for suspended ceiling low-voltage power grid distribution systems as provided in (B) Note: Article 393 is Low-voltage Suspended Ceiling Power Distribution Systems

24 Other Changes of Note for ICT Article 250 Grounding Electrode Conductors (GECs) : Protection Against Damage : Modification of AC GEC Sizing Communication System Bonding Terminations : Added alternative means (e.g., busbar) to intersystem bonding terminal

25 Chapter 3: Wiring Methods and Materials

26 Text Clarification Article (A) Secured in Place. Raceways, cable assemblies, boxes, cabinets, and fittings shall be securely fastened in place. (B) Wiring Systems Installed Above Suspended Ceilings Support wires that do not provide secure support

27 Ducts for Environmental Air - New exception Article (B) Wiring methods and cabling systems, listed for use in other spaces used for environmental air (plenums), shall be permitted to be installed in ducts specifically fabricated for environmental air-handling purposes under the following condition: Wiring/cabling system is necessary to connect equipment/devices that sense or act on the contained air Total length of wiring/cabling system < 1.2 m (4 ft)

28 Article (B)(3)(c) Rooftop Ambient Temperature Factor for Determining Conductor Ampacity Former adjustment table removed Now, when cable/raceway is less than 23 mm (7 8 in) above the surface, ambient temperature of the cable is to be increased by 33 C (60 F) NOTE: Applies to all Class 2 and Class 3 circuits

29 Article 725: Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits

30 Class 2 Circuits Article 725 New: Required marking indicating maximum voltage and current output for all connection points of power limited sources starting Jan 1, New: Powered devices connected to a circuit supplying data and power shall be listed

31 Class 2 and 3 Circuits Article 725 New: Temperature rating shall be marked on jackets of Class 2 and Class 3 cables that have a temperature rating exceeding 60C (140F)

32 New: Class 2 and Class 3 LP Cable Article (I) Listed as suitable for carrying power and data circuits up to a specified current limit Example: 1 ampere Class 2 limited-power cables would be marked CL2-LP (1.0A), CL2R-LP (1.0A), etc. Works in conjunction with Article

33 New: Article Article Transmission of Power And Data Applies to Class 2 & Class 3 circuits that transmit power and data to a powered device. Requires compliance to Parts I and III of Article 725 and Compliance Approaches

34 (A) Article Types CL3P, CL2P, CL3R, CL2R, CL3, or CL2 (1) The ampacity ratings in Table shall apply at an ambient temperature of 30 C (86 F). (2) For ambient temperatures above 30 C (86 F), the correction factors of (B)(2) shall apply.

35 Table Article

36 (B) Article Types CL3P-LP, CL2P-LP, CL3R-LP, CL2R-LP, CL3-LP, or CL2-LP (1) Can be installed in bundles, raceways, cable trays, communications raceways, and cable routing assemblies. (2) Follow the substitution hierarchy of for cable types without the suffix LP and without the marked ampere level. (3) System design shall be permitted by qualified persons under engineering supervision

37 Difference Summary Article (A) sets maximum bundle sizes (B) does not restrict bundle size if Listed current of cable is larger than power transmitted A Type CL2-LP(0.5) would be suitable for carrying up to 0.5 A per conductor, regardless of the number of cables in a bundle. ( (B) Note 2)

38 Maximum Bundle Size at 30 C Ambient Article (A) PoE (0.175A) PoE+ / PoE++ (0.3A) HDBaseT / PoE++ (0.5A) Jacket Listing 60 C (140 F) Jacket Listing 75 C (167 F) 26 AWG 24 AWG 23 AWG 22 AWG 26 AWG 24 AWG 23 AWG 22 AWG Notes: A 90 C jacket for 0.5A per conductor provides a 91 cable bundle size at 26 AWG, and 192 for 24 AWG and greater Bundles larger than 192 cables are allowed if determined under engineering supervision

39 Article 800: Communication Circuits

40 Definitions Article 800 Change: Point of Entrance. The point within a building at which the communications wire or cable emerges from an external wall or from a concrete floor slab. Terms moved to Article 100 Electrical Circuit Protective System, Innerduct

41 Temperature Article 800 New 800.3(H): Temperature Limitation of Conductors. Section (A)(3) shall apply. Addition to The temperature rating shall be marked on the jacket of communications cables that have a temperature rating exceeding 60 C (140 F).

42 Entrance Article Addition. The point of entrance shall be permitted to be extended from the penetration of the external wall or floor slab by continuous enclosing the entrance cables in rigid metal conduit (RMC) or intermediate metal conduit (IMC) to the point of emergence

43 Entrance Article 800 Edit of : Metallic Entrance Conduit Grounding. Metallic conduit RMC or IMC containing communications entrance wire or cable

44 Article 840: Premises-Powered Broadband Communications Systems

45 Scope Article This article covers premises-powered broadband communications systems. Informational Note No. 1: A typical basic system configuration consists of an optical fiber, twisted pair, or coaxial cable to the premises supplying a broadband signal to a network terminal

46 General Article 840 Expansion of other applicable article Communication Systems Electrical Classification of Data Circuits and Cables. Citations to applicable sections of 725, 800 and 830 as necessary

47 New: Powering Circuits Article 840 Where the power supplied over a communications cable to communications equipment is greater than 60 watts, communication cables and the power circuit shall comply with where communications cables are used in place of Class 2 and Class 3 cables. Note: Amendment in process to further clarify minimum power threshold

48 Data Center Related Changes Articles 645, 646, 706 NFPA

49 Articles 645 & 646 Article 645 and 646 Updated references to NFPA (E) Supply circuits/cables reorganized/expanded New: Surge protection required for critical operations data centers Article 646.3: Expanded/clarified other applicable articles

50 NFPA NFPA Ch 4 Risk Considerations Split Now: Ch 4: Fire Protection Approaches Ch 5: Performance-Based Design Approach Automatic detection systems now required within return air stream of return air plenums and aisle containment

51 Change: Automatic Fire Suppression System NFPA An automatic fire suppression system, is required for area below a raised floor in an ITE room or ITE area except when combustible material under the floor is limited to the following: (1) Cables listed for plenum use (2) Listed plenum communications raceways (3) Listed equipment power cords up to 4.6 m (15 ft) each (4) Cables installed in metallic raceways (5) Installations in compliance with Section (C) of NFPA 70 (6) Listed cooling hoses

52 New Article: Energy Storage Systems Article 706 Covers all permanently installed energy storage systems operating at over 50 volts ac or 60 volts dc Covers items, such as Disconnecting means Partitions and distance Connection to other systems pursuant to Article 705 Circuit Requirements Electrochemical and flow battery storage systems

53 NEC 2017 Status and Next Steps Released End of August 2016 Temporary Interim Amendments under development/approval State adoption starts January 2017 Proposals for NEC 2020 due Fall of 2018

54 Questions? See us after the presentation or send to

55 Thank You

56 Definition: Field Evaluation Body (FEB) Article 100 An organization or part of an organization that performs field evaluations of electrical or other equipment.

57 Definition: Field Labeled (as applied to evaluated product) Article 100 Equipment or materials to which has been attached a label, symbol, or other identifying mark of an FEB indicating the equipment or materials were evaluated and found to comply with requirements as described in an accompanying field evaluation report. Note: Term found in Articles 230, 690, 692, 694, 705 and 710

58 Definition: Receptacle. Article 100 A contact device installed at the outlet for the connection of an attachment plug, or for the direct connection of electrical utilization equipment designed to mate with the corresponding contact device. A single

59 Article (A)(4) Article 250 Grounding Separately Derived Alternating- Current Systems Clarifies that the building grounding electrode system must be used when establishing a grounding electrode for a separately derived system. (If outdoors, must comply with (C)

60 Direct Buried Cable Protection Article 300.5(D)4 Where the enclosure or raceway is subject to physical damage, the conductors shall be installed in electrical metallic tubing, rigid metal conduit, intermediate metal conduit, RTRC-XW, Schedule 80 PVC conduit, or equivalent.

61 Controlled Receptacles Article 406.3(E) Non-locking 125-volt, 15- and 20-ampere receptacles controlled or have control features for energy management or building automation Addition of Marking Requirement: The word controlled is now required to be on the receptacle face and visible after installation

62 New: Receptacle with USB Charger Article 406.3(F) A 125 V 15 A or 20 A receptacle that additionally provides Class 2 power shall be listed and constructed such that the Class 2 circuitry is integral with the receptacle.

63 Direct Current (DC) Microgrid Article 712 A power distribution system consisting of more than one interconnected dc power source supplying dc-dc converter(s), dc load(s), and/or ac load(s) powered by dc-ac inverter. Often combined with stand-alone production (e.g., PV, wind, diesel generator)