National Electrical Installation Standards

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NECA303-19Cover-WEB

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.

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Code Question of the Daytextbook

  • Wednesday, November 13, 2019
    CQD: 11/13/2019

    Re: CQD answer published Wednesday, November 6, 2019 - Emergency circuits

    1) Totally disagree with Tuesdays answer.  the circuits are kept separate but may run the entire length of a row of lighting picking up the EM ballasts drops. He did not say they were Emergency Backed up circuits off a Standby generator which must be separated. Bill Schell

    2) Good morning and thank you for your great work assisting by brother and sister electricians in the industry. Regarding the emergency wiring in the fixtures with the regular lighting circuit and beg to differ with your answer. It seems from 700.10 that the restriction is when the emergency power is from an "emergency source, or emergency distribution overcurrent protection." An emergency source would be a generator or battery back-up pack remote from the emergency light. However, when the power feeding the emergency ballast is also the circuit that feeds the lighting circuit then this would not fit the restriction of 700.10(B). All the best, Jeff Glanstein

  • Tuesday, November 12, 2019
    CQD: 11/12/2019
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