National Electrical Installation Standards

Standards as High as Your Own


News & Updates

Call for Public Review

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.

» Learn More

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.

» Learn More

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, December 7, 2022
    CQD 12/7/22

    Hello Code Guru, thanks for your daily service to the trade. I just wanted to add a comment to the CQD dated Monday, November 7, 2022:

     “Hello CQD, I am a licensed electrician working with a general contractor on a renovation project in a two-family residence in Massachusetts. Approximately 75% of the entire building will be completely renovated (down to the studs). The GC would like to leave the remaining 25% of the building as is, including the power, lighting, and heating circuits. I would prefer to replace all power. lighting and heating circuits in the entire house since the house is approximately 100 yrs. old and the existing wiring is a combination of very old Romex and BX. Is there a code requirement or state regulation which mandates that the entire building must be brought up to current code for a situation such as this?”

    Thanks, Eric Krist

  • Tuesday, December 6, 2022

How's your knowledge?
» Get the Answer!