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.

  • ?
    Friday, June 5, 2020

    Question:

    Hi Code People,

    I need your help. I have a fused switch on the back of my house for an A/C unit and it has two short sections of copper pipe installed where each fuse is supposed to be, I think. Is there a problem here or is this okay? Is there an electrical code that addresses this?

    Martin Peters

  • ?
    Thursday, June 4, 2020

    Question:

    Comment on Code Question of the Day for 05-06-2020 Dear CQD,

    In reference to the answer provided for the CQD on May 6, 2020, I disagree with the following portion of the response: "The NEC does not have a provision for using the color purple for high-leg conductor identification.” Section 110.15 of the 2020 NEC allows for the use of the orange color “or other effective means.” As long as the proposed purple coloration is "placed at each point on the system where a connection is made if the grounded conductor is also present” then the installation would comply in my opinion.

    Respectfully Submitted,

    Michael Hofkin

    A

    Answer:

    Hello Michael,

    Good to hear from you. Your comment and observation is correct. The NEC doesn't mention the color purple, but it could be chosen to accomplish the later option in 110.15. We agree with your comment. The better way to phrase it would have been, the NEC does not name the color purple for use in identification of the high leg in a system. It could be used as the identification method. We appreciate the clarity and for participating.

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 recognized NEC® expert and author. He served on several NEC technical committees and is past chairman of CMP-12. In 2006, Charlie was awarded NECA’s prestigious Coggeshall Award for outstanding contributions to the electrical contracting industry, codes and standards development and technical training. NECA continues to provide this public forum in memory and recognition of all his fine contributions that has made 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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