2017 NEC: Impact to Electrical System Designs

Transcription

1 2017 NEC: Impact to Electrical System Designs We will begin shortly. Turn up your speakers in order to hear the hold music. Feel free to ask questions now in the Q&A widget!

2 Today s broadcast is sponsored by: Innovation at Every Level Expert-To-Expert Education Series Schneider Electric TM has been approved as an Authorized Provider by the International Association for Continuing Education and Training (IACET), 1760 Old Meadow Road, Suite 500, McLean, VA 22102; Schneider Electric - Codes and Standards NEC Changes (c) January 2017

3 How to use this Broadcast Desktop Access Consulting engineer portal and download slides and files Type in questions during the webinar For technical support regarding viewing this webinar Controls your viewing of the slides Complete the participant survey Request to be contacted

4 Moderator: Wendell Leisinger Consulting Engineer Segment Manager, Schneider Electric Over 30 years of experience with Schneider Electric and the construction industry Thought leader on Building Information Modeling Member of IEEE, CSI, AEE, and NEMA High Performance Buildings

5 2017 NEC: Impact to Electrical System Designs

6 FOR THOSE WHOM HAVE ALREADY REGISTERED FOR THE PORTAL Make sure to print your PDH Certificate 12 hours after this webinar There s now a quicker and easier way to print your certificate. FOR THOSE WHOM HAVE NOT ALREADY REGISTERED FOR THE PORTAL Please go to: to register for the portal. There is also a link to the portal on your broadcast dashboard You will then be able to print your certificate 48 hours after registering for the portal If you have any difficulties, please PartnerPortalSupportUS@schneider-electric.com

7 Upon completion of this presentation, you should be able to: Learning Objectives: Recognize the most pertinent changes to the code and the impact on your projects Recognize the new requirements and potential impact of engineering designs Understand the spirit of the Code versus the letter of the Code

8 LIVE IN CHICAGO Aamir Paul Senior Vice President, US Business Operations Schneider Electric

9 Speaker: Alan Manche, P.E. VP, External Affairs, Schneider Electric Member NEC Correlating Committee & NEC CMP 2 & 10 Member of Technical Committee NFPA 110, 70B, and 73 Past Chair of NFPA 70B Board of Directors Western Section IAEI Board of Directors Electric Safety Foundation International (ESFi) Member, Common Wealth of Kentucky Electrical Advisory Committee Member, NEMA Codes and Standards Chair, NEMA Code Adoption Initiative Chair, NEMA Water and Fire Damaged Equipment Committee

10 Speaker: Chad Kennedy, P.E. Manager, Industry Standards, Schneider Electric Member NEC CMP 13 Member of ELS, NFPA 99 Member of NFPA 3, 4 Testing and Commissioning Member of UL, NEMA, & IEEE Technical Committees for Transformers, Panelboards, Switchboards, Switches, Switchgear, Energy Storage, Distribution Automation (Microgrid) Member of NFPA & NFPA Electrical Section IAEI Member Chair, NEMA Sharp Edges Task Force Chair, NEMA LVDE02 Panelboards and Switchboards

11 Speaker: Jim Degnan, P.E., LEED AP Principal at Stantec 40 years of experience in electrical systems design Licensed professional engineer in 11 states. Active member of the American Society of Healthcare Engineers, the Institute of Electrical and Electronics Engineers, and the Illuminating Engineers Society. Supports several associations and governments with code development, including the National Fire Protection Agency (member NFPA 70 Code Making Panel 13), the Washington State Energy Code, and the City of Seattle Electrical Code.

12 110.16(B) Arc Flash Hazard Marking Applies to service equipment rated 1200 A or more (other than dwelling units) Must Mark Nominal System Voltage Available Fault Current Clearing time of overcurrent protective device(s) based on available fault current Date applied Exception Service equipment labeling shall not be required if an arc flash label is applied in accordance with acceptable industry practice

13 Arc Energy Reduction Fuses (Effective 1/1/20) Fuses rated 1200 A or higher Clearing time of 0.07s or less at the available arcing current or a reduction method must be supplied Methods to reduce clearing time shall be one of the following: Differential relaying Energy reducing maintenance switch with local indicator Energy reducing active arc flash mitigation system An approved equivalent means Schneider Electric - Codes and Standards 2017 NEC Changes January 2017 This requirement is similar to that for circuit breakers in

14 Arc Energy Reduction Added arc energy reduction methods for Circuit Breakers: An instantaneous trip setting that is less than the available arcing current An instantaneous override that is less than the available arcing current Unlike existing methods, these methods have performance consideration requiring the calculation of the available arcing fault.

15 210.8(B) Other than Dwellings (GFCI) Applies to receptacle outlets 150 V to ground or less Single phase receptacles expanded from 20 A to 50 A Added 3 phase up to 100 A Added crawl spaces and unfinished portions of basements not intended as habitable rooms

16 Exceptions Lighting Loads for Specified Occupancies Allows lighting loads to be calculated using the adopted energy code where designed and constructed to comply and meets the following: Power monitoring system installed to provide lighting load data and must have alarm(s) to alert the building owner/manager if the lighting load exceeds limits Demand factors in do not apply New Exception expands this allowance where an energy code is adopted and that energy code specifies an overall lighting density of less than 1.2 volt-amperes/1.2 ft 2. It permits the unit lighting loads in Table for office and bank areas within the building to be reduced by 1 volt-amperes/1 ft 2

17 Questions?

18 230.95(C) Performance Testing. (GFPE) Applies to all GFPE provided at the service equipment Test after installation in accordance with the instructions provided with the equipment. Now Requires primary current injection testing Written test record available for AHJ Also impacts Feeders in CK

19 312.8(B) Power Monitoring Equipment Permits the installation of power monitoring equipment in the wiring space where Field installable accessory or listed kit for switch or overcurrent device enclosures and The total area of all conductors, splices, taps, and equipment at any cross section of the wiring space does not exceed 75% of the crosssectional area of that space

20 and Short Circuit Current Rating Marking & Documentation Industrial control panels required to be marked with a short-circuit current rating Documentation must provide the available short-circuit current Date of calculation Available to those authorized to inspect the installation Elevator Control Panels Marked with SCCR based on Listed assembly Approved method UL 508A, Supplement SB

21 Questions?

22 700.3(F) Temporary Source of Power for Maintenance or Repair of the Alternate Source of Power Applies to installations with a single alternate power source Requires a permanent switching means to connect a temporary source Recognizes need for maintenance & repair activities Schneider Electric - Codes and Standards 2017 NEC Changes January 2017

23 620.51(E) Surge Protection Applies to elevators, dumbwaiters, escalators, moving walks, platform & stairway chairlifts supplied by the building emergency system Aligns with the requirements in Article 700 to protect the emergency system from surges Schneider Electric - Codes and Standards 2017 NEC Changes January 2017

24 Surge Protection for Critical Operations Data Systems Recognizes the importance of protecting the electrical infrastructure from surges Location(s) is not specified. Surge protection requires surge protective devices at multiple levels within the system. Location of the devices is based on the system design. Schneider Electric - Codes and Standards 2017 NEC Changes January 2017

25 408.3(A)(2) Service Panelboards Barrier for line side terminations, bus, and exposed energized parts Revision aligns with existing requirements for switchboards and switchgear Single main panelboard configurations Electrical shock protection only, no arc flash energy protection

26 705.12(B)(2)(3)(d) Interconnected Electric Power Sources Center-fed panelboards Dwellings only Bus bar rating for load side connections Permits use of the 120% rule where the connection is at either end of the panel but not both Schneider Electric - Codes and Standards 2017 NEC Changes January 2017

27 Questions?

28 Appendix

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