National Electrical Installation Standards

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Revision of NECA 121-201X, Standard for Installing Nonmetallic-Sheathed Cable (Type NM-B)and Underground and Branch Circuit Cable (TypeUF)

Revision of NECA 303-201X, Standard for Installing and Maintaining Closed-Circuit Television (CCTV) Systems


Revision of NECA 413-201X, Standard for Installing and Maintaining Electric Vehicle Supply Equipment (EVSE)



All NEIS Currently Available for Public Review

Featured Standards


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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Building Codes Assistance Project Energy Code Adoption

Code Question of the Daytextbook

  • Thursday, July 19, 2018
    CQD: 7/19/2018

    Re: CQD answer published Wednesday, July 11, 2018 -Swimming Pool Junction Boxes

    The following is from UL 1241:

    A junction box shall have provision for the connection of any equipment grounding conductor in the range of 1.3 - 5.3 mm2 (16 - 10 AWG) inclusive.

    A junction box intended for use with a low-voltage luminaire may be marked "Suitable For Use With A Low-Voltage Luminaire."

    Jeff Fecteau

    Senior Regulatory Engineer, UL LLC

  • Wednesday, July 18, 2018
    CQD: 7/18/2018
    View Question and Answer

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