National Electrical Installation Standards

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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 »
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NEC Adoption by State

Building Codes Assistance Project Energy Code Adoption

Code Question of the Daytextbook

  • Wednesday, April 1, 2020
    CQD 4/01/20

    Thank you for taking my question. I follow this daily and have for many years. I also am an a electrician and electrical instructor. My question is if I were to rewire an existing apartment on the 19th floor in a type one construction. The floors and above the ceilings are concrete and all metal studs. The existing wiring method is type NMC. Building is 60 yrs old. Every floor has 4 apartments. Customer wants new lighting and receptacle outlets added. I believe NMC is allowed per NEC because of the type of construction. Please give me your thoughts. I know the AHJ has final say.

    Randy Adams

  • Tuesday, March 31, 2020

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