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Thread: EMT direct burial lugs on roof

  1. #11
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    Quote Originally Posted by Cow View Post
    This is what I use for outdoor or wet location conduit bonding or grounding:

    http://ecat.burndy.com/Comergent/burndy/cat/611603
    Too big.

  2. #12
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    I guess we could consider using this type.

    https://www.google.com/shopping/prod...+copper+washer

    But it would have to be the outdoor type with the brass washer, which I can't seem to find online.
    Gotta consider the cost though, and I'm not keen to have my guys pull PV wire through them either.

  3. #13
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    Quote Originally Posted by ESolar View Post
    ... for grounding EMT sleeves (not raceways) on the roof. Can someone please elaborate with suggestions.
    I have 2 questions,

    1) What code section requires these sleeves to be grounded?

    2) Could a non metallic product be used as a sleeve?

  4. #14
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    Quote Originally Posted by oldsparky52 View Post
    I have 2 questions,

    1) What code section requires these sleeves to be grounded?
    250.110

    2) Could a non metallic product be used as a sleeve?
    Non-metallic methods aren't necessarily suitable for rooftop surface temperatures. See 352.12 (D). Or 350.12(2).

    There's probably more latitude in the code for non-metallic methods than industry-standard methods give credit to, but that's at least one major reason solar installers don't do it. Also I think doesn't save any time and typically comes out uglier looking.

  5. #15
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    Quote Originally Posted by jaggedben View Post
    250.110



    Non-metallic methods aren't necessarily suitable for rooftop surface temperatures. See 352.12 (D). Or 350.12(2).

    There's probably more latitude in the code for non-metallic methods than industry-standard methods give credit to, but that's at least one major reason solar installers don't do it. Also I think doesn't save any time and typically comes out uglier looking.
    Thank you!

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