National Electrical Installation Standards

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Revision of NECA/NEMA 605-201x, Standard for Installing Underground Nonmetallic Utility Duct.

Revision of NECA 111-201X, Standard for Installing Nonmetallic Raceways (RNC, ENT, LFNC)

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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State Regulationsusa country shape

Find the major provisions of electrical code, enforcement, and contractor/electrician licensing requirements for each state in the U.S.

US Electrical Codes & Regulations by State »
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NEC Adoption by State

Building Codes Assistance Project Energy Code Adoption

Code Question of the Daytextbook

  • Friday, June 23, 2017
    CQD: 6/23/2017

    Re: CQD answer published Wednesday, June 14, 2017 -

    Would you answer still be the same for NEC 2014 for same condition?

    I am asking on behalf of a friend so he can read this. New York is still under the 2014 NEC.

    Bill Schell

  • Thursday, June 22, 2017
    CQD: 6/22/2017
    View Question and Answer

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