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NEC 2014: Summary of Changes


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

1. Revision: 600 Volts to 1000 Volts Threshold

2. New Articles
-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. Definition:
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.

4. 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 areas.
• Not only garages where electrical diagnostic equipment electrical hand tools, or
portable lighting equipment are to be used.

5. 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 GFCI’s must be readily accessible).

6. 210.12 AFCI Protection for Dwelling Units now required in kitchen, laundry and dormitories. Receptacle AFCI’s can be used under certain conditions.

7. 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 1000 volts and under.

8. 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.

9. Revision: 406.9(B)(1) Extra-Duty Covers at 15- and 20-Ampere Receptacles at Wet Locations.

10. Revision/New: 445.11 Marking at Generators to indicate if the neutral is bonded to the frame.

11. 517.18(B); 517.19(B); and 517.19(C) Health Care Facilities – Number of Receptacles.

12. New: 690.12 Rapid Shutdown of PV Systems on Buildings.

Index of NEC Tables

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