National Electrical Installation Standards

Standards as High as Your Own


Featured Standards


NECA 303-2019 Standard for Installing Closed-Circuit Television Systems (CCTV)

This standard describes installation procedures for new closed-circuit television (CCTV) system equipment installed for video surveillance and for protection of building interiors, building perimeter, and surrounding property.

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NECA 120-2018 Standard for Installing Armored Cable (Type AC) and Type Metal-Clad (MC) Cable

This standard covers the identification, selection and installation of Type AC and Type MC cables, which are used for electrical wiring for residential, commercial and industrial occupancies.

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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 »
Licensing Information by State ».

NEC Adoption by State

Building Codes Assistance Project Energy Code Adoption

Code Question of the Daytextbook

  • Friday, September 17, 2021
    CQD 9/17/2021

    Greetings CQD,

    Does a 277-volt instant hot water heater require GFCI protection in a commercial lab. It has been hard wired, no cord/plug.

    John Wilhelm

  • Thursday, September 16, 2021
    CQD 9/16/2021
    View Question and Answer

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