National Electrical Installation Standards

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NECA 416-2016 Recommended Practice for Installing Energy Storage Systems

This standard describes methods and procedures used for installing multiple types energy storage systems. It also includes information about controlling and managing energy storage systems, in addition to commissioning and maintaining energy storage systems.
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NECA/FOA 301-2016 Standard for Installing and Testing Fiber Optics

This standard describes installation and test procedures for fiber optic cabling networks. This standard applies fiber optic cabling installed indoors (premises installations) and outside plant (OSP) applications.
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Find the major provisions of electrical code, enforcement, and contractor/electrician licensing requirements for each state in the U.S.

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Code Question of the Daytextbook

  • Tuesday, October 16, 2018
    CQD: 10/16/2018

    A metal cabinet contains service conductors, their splices, and current transformers (CT), and is located upstream of an 800-amp service disconnecting means. The CT cabinet has only PVC raceways entering and exiting the enclosure, and the engineered drawings do not show any supply-side bonding jumpers in the PVC raceways.  Is it correct to assume that this metal CT enclosure must be connected to a supply-side bonding jumper?  If so, what is the correct size bonding jumper?  Should supply-side bonding jumpers have been included in the drawings?

    Although NEC Table 250.102 (C)(1) provides sizes of supply-side bonding jumpers, there seems to be no specific text section that references this table for metal enclosures.  I have looked at 250.80, 250.92, and 250.102 (C).  Can you help me connect the NEC dots to size supply-side bonding jumpers to metal CT enclosures?

    Curtis Lichty

  • Monday, October 15, 2018
    CQD: 10/15/2018
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