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

  • Wednesday, June 23, 2021
    CQD 6/23/2021

    Good Day, "have two 200 amp disconnects outside to feed the chillers stainless steel N3 the two chiller line are 2'7'' away from the disconnects how far can the chiller line be away from the disconnects this chiller line will be insulated and rap."

    Alvaro Aguirre

  • Tuesday, June 22, 2021
    CQD 6/22/2021
    View Question and Answer

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