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

  • Monday, October 3, 2022
    CQD 10/3/22

    Hello Charlie,

    The 2018 Edition of NFPA 99 Healthcare Facilities Code States that an operating room shall be considered a wet location unless the Hospital Governing body determines otherwise. The NEC 406.9(B) states in wet locations it must be in a weather-resistant enclosure with WR cover. I have been in many operating rooms and have never seen WR enclosures, covers, or receptacles in the headwall. Is it required by the NEC?


    Kelly Wafford.

  • Friday, September 30, 2022

How's your knowledge?
» Get the Answer!