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Thread: Conduit support

  1. #1
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    Conduit support

    At a manufacturing plant where there are vertical conduit drops 30' long with no supports. How can they get away with that?

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  2. #2
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    30' is too far. You might comply with 20' if it's RMC.

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    All responses based on the 2014 NEC unless otherwise noted

  3. #3
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    How do they get away with that? Ben Franklin and his brothers Ben, Ben, Ben and Ben have a way sometimes of skewing a tape measure...
    Electricians do it until it Hertz!

  4. #4
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    Quote Originally Posted by JFletcher View Post
    How do they get away with that? Ben Franklin and his brothers Ben, Ben, Ben and Ben have a way sometimes of skewing a tape measure...
    Or perhaps it is an inspector with a brain, who looked at the installation and recognized that 20 feet is arbitrary and dropping a piece of 1/4" threaded rod with a mini on the end would add exactly zero to the integrity of the system. I hve met inspectors on both sides of the spectrum.


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  5. #5
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    Quote Originally Posted by davegerver View Post
    At a manufacturing plant where there are vertical conduit drops 30' long with no supports. How can they get away with that?

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    I'm not sure how you get away with taking a picture inside a plant and posting it on the web.

    Most manufacturing facilities frown on that type of thing.

    JAP>

  6. #6
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    This particular plant does 10 hours a day don't think there any big trade secrets here

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  7. #7
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    10 tours sorry

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  8. #8
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    Just curious, how high is the bus duct mounted? We just mounted some at 24 feet and had to buy a telescoping hot stick because the sticks provided by Square D only come in length up to I think 18'


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  9. #9
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    Around 20

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  10. #10
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    Quote Originally Posted by Strathead View Post
    Or perhaps it is an inspector with a brain, who looked at the installation and recognized that 20 feet is arbitrary and dropping a piece of 1/4" threaded rod with a mini on the end would add exactly zero to the integrity of the system. I hve met inspectors on both sides of the spectrum.
    I don't think conduit is really "supported" if the "support" is weaker/more flexible than the conduit. Beat the assembly with a sledge hammer, and those threaded rods will break long before the conduit.

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