National Electrical Installation Standards

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News & Updates

Did you know this year's National Stand-Down to Prevent Falls is May 3-7?

This year's National Safety Stand-Down to Prevent Falls is May 3rd -7th.
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National Work Zone Awareness Week (April 26-30)

National Work Zone Awareness Week is an annual spring campaign held at the beginning of construction season and encourages safe driving practices through highway work zones. The key message is for drivers to practice extra caution while traveling through and around work zones.
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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 »
Licensing Information by State ».

NEC Adoption by State

Building Codes Assistance Project Energy Code Adoption

Code Question of the Daytextbook

  • Friday, May 14, 2021
    CQD 5/14/2021

    Hi CQD,

    Thanks for this informative Code blog. If a ground-mounted A/C unit (for a split system) is marked "Minimum Circuit Amperes" 30 and Maximum Overcurrent Protective Device 55, do I have to size the wire for 55 amperes?

    Tom Hearn

  • Thursday, May 13, 2021
    CQD 5/13/2021
    View Question and Answer

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