National Electrical Installation Standards

Standards as High as Your Own

Monday, December 2, 2019


Re: CQD answer published Monday, November 11, 2019 -Service Conductors in Building

I know, I am mostly retired but still love the Code Question of the Day and still miss Charlie at the Western Section IAEI meetings. We have has some of the best conversations about the Code (what else?) and I loved to win an argument (that didn’t happen often).

RE: the Code Question of the Day for Friday, November 8, 2019 It is interesting to me that Mr. Tucker referenced an electric utility actually entering a building. Most electric utilities DO NOT permit their conductors to enter a building since we normally do not use conductors that are tested by a NRTL and they have not passed the vertical flame test. Most of the secondary conductors we use are polyethylene covered for overhead and cross-linked polyethylene for direct burial. For entry into a building, the cross-linked polyethylene URD (normally USE) cable has to be marked USE/XHHW or similar to meet the Code requirements.

Take care, Charlie Eldridge




Hey Charlie thanks for your follow up comment, the complement and the additional information about why the conductors entering a building are customer owned.

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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 Award for 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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