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  1. #1
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    NC Dept of Insurance Official Interpretations

    If anyone wants a copy of NCDOI official interpretation of some commonly disputed sections in the 2017 NEC then click on the link below. I advise you to download it into word and the links should work. The links just take you to other areas of the document. Move your mouse to the link then use ctrl and click to activate the link.

    NCDOI Formal Interpretation
    Last edited by Dennis Alwon; 10-10-18 at 04:34 PM.
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



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    Dennis that's for the 2017 NEC? I think that you had a typo in your post.
    Rob

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    All responses based on the 2014 NEC unless otherwise noted

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    Quote Originally Posted by infinity View Post
    Dennis that's for the 2017 NEC? I think that you had a typo in your post.
    Why didn't you fix it? lol

    Thanks I got it
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



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    Quote Originally Posted by Dennis Alwon View Post
    Why didn't you fix it? lol

    Thanks I got it


    I found this question and answer interesting:

    Question 2:
    If a metal underground water pipe is used as part of an electrode system and is supplemented with a ground rod, is another grounding electrode required to supplement the supplemented ground rod?

    Answer 2:
    No. The requirement of section 250.53(D)(2) requires one supplement electrode of a type chosen from sections 250.52(A)(2) through (A)(8), in which a rod is listed in section 250.52(A)(5).
    Both the water pipe and the rod must comply with the installation requirements of section 250.53(A). Because the water pipe and the rod make two electrodes, each supplement the other; thus, 250.53(A)(2) is satisfied.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

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    Quote Originally Posted by infinity View Post


    I found this question and answer interesting:
    Question 2:
    If a metal underground water pipe is used as part of an electrode system and is supplemented with a ground rod, is another grounding electrode required to supplement the supplemented ground rod?

    Answer 2:
    No. The requirement of section 250.53(D)(2) requires one supplement electrode of a type chosen from sections 250.52(A)(2) through (A)(8), in which a rod is listed in section 250.52(A)(5).
    Both the water pipe and the rod must comply with the installation requirements of section 250.53(A). Because the water pipe and the rod make two electrodes, each supplement the other; thus, 250.53(A)(2) is satisfied.
    Oooo. I LIKE it.
    Another Al in Minnesota

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    Not sure how a water pipe is supplementing a single ground rod when the water pipe gets changed to plastic.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

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