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Thread: EGC or GEC?

  1. #11
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    Quote Originally Posted by Dale001289 View Post
    The building ground bar is an extension of the grounding electrode system therefore an external grounding conductor form the switchboard is most likely the GEC.
    only if it is.

    it could also just be a place to land EGCs.

    the term is ambiguous.
    Bob

  2. #12
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    Quote Originally Posted by petersonra View Post
    only if it is.

    it could also just be a place to land EGCs.

    the term is ambiguous.
    Building grounding bars are either bolted or welded to building steel - this is an extension of grounding electrode system or equipotential grid. For applications of an EGC, see 250.118 or better yet see 250.134(B) handbook for best explanation.

  3. #13
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    Quote Originally Posted by Dale001289 View Post
    Building grounding bars are either bolted or welded to building steel - this is an extension of grounding electrode system or equipotential grid.
    that is true, in the narrow case you just defined.

    but building grounding bar is not a NEC defined term so it does not mean much in the context of the OP.

    it could mean just about anything. or nothing.
    Bob

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