Chapter Corner

Changes to the 2014 NEC

Posted in: Code Corner, August 2013

BooksBulb_Insights.gifAccording to the National Fire Protection Association (NFPA), there were 3,745 proposals submitted recommending changes for the 2014 National Electric Code (NEC). In addition, there were 1,625 comments concerning the NEC Code-Making Panels’ responses to these proposals.

Below are some of the more noteworthy changes that occurred in the 2014 edition of the NEC.

  1. There was a revision to increase the nominal threshold voltage from 600 Volts to 1,000 Volts. The higher voltage is needed for the installation for solar photovoltaic (PV) equipment.

  2. New articles were added to the NEC topics concerning:

    • Article 393 Low Voltage Suspended Ceiling Power Distribution
    • Article 646 Modular Data Centers
    • Article 728 Fire Resistive Cable Systems
    • Article 750 Energy Management Systems


  3. Even though “readily accessible” has been used in the NEC, the definition of readily accessible has been added to Article 100. This may require changes to the installation of receptacles for dishwashers and vending machines.
  4. Readily Accessible
    Capable of being reached quickly for operation, renewal, or inspection without requiring those concerned to use a tool, to climb over, remove obstacle, or other.

  5. Article 210.8 GFCI Protection for Dwelling Unit Laundry Areas and Commercial Garages. Dwelling unit laundry areas will now require GFCI protection for all 125-volt, single-phase, 15- and 20-amp receptacles in laundry rooms.

    GFCI protection required for all 125 volt single phase 15 and 20 ampere receptacles installed in all commercial, non dwelling unit garages, service bays, and similar bays, and similar areas. Not only garages where electrical diagnostic equipment electrical hand tools, or portable lighting equipment to be used.

  6. Article 210.8(D) GFCI for Kitchen Dishwasher Branch Circuit.

    GFCI protection shall be provided for outlets that supply dishwashers installed in dwelling units. This includes receptacles and hardwired (All GFCIs must be readily accessible).

  7. Article 210.12 AFCI Protection for Dwelling Units now required in kitchen, laundry, and dormitories. Receptacle AFCI’s can be used under certain conditions.

  8. Article 300.38 Raceways in Wet Locations Above Grade. A new section was added to Part II (over 1000 volts, nominal) of Article 300 to indicate that the interior of raceways installed in wet locations above grade are now considered to be a wet location. This will bring aboveground installation requirements for over 1000 volts consistent with the requirements in 300.9 for 1,000 volts and under.

  9. Article 310.15(B)(3)(c), Exception and Table 310.15(B)(3)(c) Raceways and Cables Exposed to Sunlight on Rooftops. A new exception was also added that will allow the employment of Type XHHW-2 conductors, which is a thermoset-insulated conductor, to be installed in raceways or cables on rooftops without having to apply an ambient temperature adjustment correction factor for these conductors.

  10. There was a revision to article 406.9(B)(1) Extra-Duty Covers at 15- and 20-Ampere for receptacles at wet locations.

  11. There is a revision in Article 445.11 to require marking at generators to indicate if the neutral is bonded to the frame.

  12. Articles 517.18(B); 517.19(B); and 517.19(C) for healthcare facilities will conform to NFPA 99 and change the number of receptacles in patient care facilities for the patient and in operating rooms.

  13. Article 690.12 will require Rapid Shutdown of PV Systems on Buildings.

These are just a few of the changes that have been incorporated into the new 2014 NEC. IEC will continue to communicate changes made to the NEC to keep you up to date.

John Masarick is Vice President of Codes & Safety at IEC National. He can be reached at (703) 650-0053 or e-mail