National Electrical Installation Standards

Standards as High as Your Own

The Code Question of the Day (CQD) is NECA and ELECTRICAL CONTRACTOR Magazine’s flagship National Electrical Code (NEC®) public forum for the industry, sponsored by EATON.

The daily distribution of Q&A generates a lively dialogue and shares relative Code-based practical responses.

  • ?
    Thursday, July 9, 2020

    Question:

    Comment on CQD for Friday May 22, 2020:

    Hi Code Question of the Day,

    Oh yes, the constant battle of installing a receptacle with the ground up or down. Two comments, first working in southern Michigan and working with electricians from Ohio, they always installed them with the ground up and the electricians from Michigan usually installed them with the ground down. Must be something about buckeys!

    Second, I've noticed in medical facilities ( doctor and dentist offices) the ground is installed up. I think that is due to the cord configuration on the equipment that is plugged in. Flat cord caps that would have the cord go up before dropping back down to the floor and straining the cord. Just my two-cents on the question that will never be solved to everyone's satisfaction.

    Gary Lazette

  • ?
    Wednesday, July 8, 2020

    Question:

    Hello Code Friends,

    What is the standard (or is there one) for selecting proper lug barrel size for a given AWG wire size?

    Scott Alsop

    A

    Answer:

    Hi Scott,

    Thanks for the question. The NEC includes specific rules for terminations (including selection of proper lug size) in Section 110.14 of the NEC. Section 110.3(B) addresses the use and installation that requires installations to be in accordance to the manufacturer's installation instructions. The lug should be suitable for the size of the conductor and the conductor material. Termination tightness (torque requirements) are covered in both of these sections and are typically provided in markings on the equipment.

ABOUT CQD: The Code Question of the Day (CQD) is NECA and ELECTRICAL CONTRACTOR Magazine’s flagship National Electrical Code (NEC®) public forum for the industry, sponsored by EATON. The daily distribution of Q&A generates a lively dialogue and shares relative Code-based practical responses.

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CHARLIE TROUT: 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 Awardfor outstanding contributions to the electrical contracting industry, codes and standards development, and technical training. Even though Charlie passed away in October of 2015, his work continues in spirit. NECA continues to maintain this question forum for its many subscribers in memory and recognition of all his significant contributions to making the NEC what it is today.

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IMPORTANT NOTICE: Unless the question requests a response based on a specific edition, all answers are based on the latest edition of NFPA 70® National Electrical Code®.

This correspondence is not a formal interpretation of the NEC® and any responses expressed to the questions are opinions and do not necessarily represent the official position of NECA, NFPA, the NEC Correlating Committee any Code-making panel or other electrical technical committee. In addition, this correspondence is neither intended, nor should it be relied upon, to provide professional consultation or services. 

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