National Electrical Installation Standards

Standards as High as Your Own

The National Electrical Code is the bedrock of the electrical construction business.

Do you know all the ins and outs of the Code? NECA and Electrical Contractor magazine are pleased to present their daily online feature, “Code Question of the Day.”

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    Friday, November 16, 2018


    Re: CQD answer published Monday, November 5, 2018

    Code Question of the Day for 11/05/2018

    So every person at CQofD is a man? Or are only the men doing a great service? Publishing that gender-specific salutation is not helping the stereotype that only white males can be engineers and electricians.

    Friday, November 2, 2018

    Gentlemen, your doing a great service,,, Thursday answer referencing the…  

    Lori Weidner

  • ?
    Thursday, November 15, 2018


    Can direct burial cable (UF) be installed in PVC conduit?

    Jimmie (Jim) Cuba



    Hey Jimmie thanks for your question. Yes. Underground Feeder cable is allowed to be installed in a raceway. For PVC conduit, cables are permitted as stated in the second sentence of 352.22. UF cable is not prohibited from being installed in raceways by 340.12 but make sure you comply with the bending radius rule in 340.24.

ABOUT CQD: NECA’s Code Question of the Day (CQD) is a leading National Electrical Code® forum for NECA and the industry. The CQD generates a lively dialogue and relative practical and Code-based responses to an ever-increasing and interactive audience.

IMPORTANT NOTICE: All answers are based on the latest edition of the National Electrical Code®, unless the question requests a response based on a specific edition. This correspondence is not a formal interpretation of the NEC®. Any responses expressed to the questions are opinions and do not necessarily represent the official position of NECA, NFPA, or any technical committee. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services.

ABOUT CHARLIE: Charles M. Trout, better known as Charlie, was a nationally known NEC® expert and author. He served on several NEC® technical committees and is past chairman of CMP-12. In 2006 Charlie was awarded the prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development, and technical training. Charlie was also a member of NECA’s Academy of Electrical Contracting. Charlie’s experienced team of industry experts keep the CQD dialogue and discussions active and informative in the spirit of the man himself, as he wanted.

NECA STANDARDS: NECA publishes the National Electrical Installation Standards™ (NEIS™), a series of ANSI-approved performance and quality standards for electrical construction. Visit for more information. NEISÔ can be purchased in three formats: as paper books, on CD, or as electronic downloads.

NECA SAFETY PRODUCTS: NECA publishes valuable electrical safety books and CDs for the industry. Visit to view or purchase NECA safety products.

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