1. Mark W. Earley, P.E. Chief Electrical Engineer

2.  Also known as the NEC ® or ANSI/NFPA 70  There are two electrical codes that govern electrical installation ◦ The National Electrical Safety Code®-governs electrical and communications utility installations ◦ The National Electrical Code®-governs electrical installations in the built environment

3.  First meeting held in 1896 ◦ Five Codes in use in the USA at the time ◦ Intended to promote safety and facilitate product standardization across the country  First edition issued in 1897  NFPA became sponsor in 1911 and has continued to be the sponsor for 100 years  There have been 52 editions  Since 1953, the NEC has been issued every three years  Adopted into law

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6. NEC TCC CMP 1 CMP 1 TG CMP 19 CMP 19 TG NFPA 70B NFPA 70E 70E TG Organization of NEC Project The NEC TCC has responsibility for 19 Code- Making Panels plus several other Technical Committees and documents, including NFPA 70B, 70E, 73, 79, 110, 111, 790, and 791.

7.  NFPA 70B-Electrical Equipment Maintenance  NFPA 70E-Electrical Safety in the Workplace  NFPA 79-Industrial Machinery  NFPA 110-Standard for Emergency and Standby Power Systems  NFPA 111- Standard on Stored Electrical Energy Emergency and Standby Power Systems  NFPA 790- Standard for Competency of Third Party Field Evaluation Bodies  NFPA 791- Recommended Practice and Procedures for Unlabeled Electrical Equipment Evaluation

8.  Electrical installation requirements--NEC®  Product standards -UL, NEMA, etc ◦ Product testing to standards  Electrical inspection (ensures compliance with the installation rules of the NEC, along with any product installation requirements

9.  Have been in every edition since the 1897 edition.  There are specific AC and DC requirements  Where not specified, requirements apply to AC and DC

10. AC Systems DC Systems The NEC Applies to AC and DC AC Requirements DC Requirements

11.  Article 480 Batteries  Article 690 PV Systems  Article 725 Class 1, 2, and 3 Systems  Article 760 Fire Alarm Systems  Article 800 Communications

12.  Are the Common Requirements a Good Idea? ◦ Based on current applications, yes!  Based on current technology, the requirements of the NEC have worked well. ◦ Higher power DC may present new challenges  Overcurrent protection  GFCI protection  AFCI protection  Switching  Circuit protection  Arc flash evaluation  Circuit separation

13.  Standard nominal AC line voltages ◦ 120/240 Volts single phase ◦ 208Y/120 Volts three phase ◦ 480Y/277 Volts three phase  Standard nominal DC Line voltages ◦ ? ◦ 380 volts  Demand factors  Plug and receptacle configurations?

14.  If DC is produced by switching mode supplies, will there be nonlinear load problems? ◦ Neutral conductor size for AC services, feeders, and branch circuits ◦ Electronic noise ◦ Isolated grounding

15.  Chaired by John Kovacik, UL  Members from various parts of the NEC community  May be soliciting additional members with DC expertise

16.  Anyone can submit a proposal or public comment  Committee meetings are open  Anyone can request time to address a code- making panel  Committee reports are published

17. Jan. 9-21, 2012 April 23-27, 2012 June 15, 2012 Oct. 17, 2012 Nov. 4, 2011 Nov 28-Dec 8, 2012 Proposal Closing DateNEC TCC Meeting Comment Closing CMP ROP Meetings. ROP Published CMP ROC Meetings. Critical Points in NEC Processing Schedule Note: The Individual CMP meeting dates have not yet been established.

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