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Thread: Distance between J-boxes

  1. #1

    Distance between J-boxes

    In a {relatively} recent issue of an electrical trade magazine, an article mentions that the code limits the distance of a pipe run to no more than 100' between boxes, but fails to say where such a code may be found. I have not been able to find it in the hard copy, nor CD copy of the NEC. (96,03,05).
    Does anyone know if this is a national code, and if so, where I could read it?

  2. #2
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    Re: Distance between J-boxes

    You can't find it because it's not there.

  3. #3
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    Re: Distance between J-boxes

    I've heard this same code "myth" for over 30 years. If it ever was in the NEC it's not now. Maybe we need someplace in this forum for most frequently quoted myths of the NEC.

  4. #4
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    Re: Distance between J-boxes

    Reply to JDcalelectrician
    Could you possibly let us know what magazine and what issue. If several of us letter write the magazine they may possibly publish a retraction of this statement, and therefor help to stop the myth from continuing.
    85deg. an Sunny today.

  5. #5
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    Re: Distance between J-boxes

    Originally posted by JDcalelectrician:
    In a {relatively} recent issue of an electrical trade magazine, an article mentions that the code limits the distance of a pipe run to no more than 100' between boxes, but fails to say where such a code may be found. I have not been able to find it in the hard
    Is it possible they where talking about BICSI standards and not the NEC?

    It would not surprise me if BICSI limits pulls to 100'.

  6. #6
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    Re: Distance between J-boxes

    I often wondered about the 360 degrees of bend rule for conduit. If the run is more than 360 degrees we insert a pulling point in the run. My question is by code, are we required to use it? Or if we choose, is it just to get the rope in or to slap on some pulling lube?
    Rob

    Chief Moderator

    All responses based on the 2011 NEC unless otherwise noted

  7. #7
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    Re: Distance between J-boxes

    Hmmmm. :confused:
    Patrick H., Deep South Texas

  8. #8
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    Re: Distance between J-boxes

    Originally posted by infinity:
    If the run is more than 360 degrees we insert a pulling point in the run. My question is by code, are we required to use it? Or if we choose, is it just to get the rope in or to slap on some pulling lube?
    I think you are correct with the intent of the rule however it is not written that way.

    I know I have pulled through more than 5 - 90s.

    If your using a power puller I suggest bracing any large box you pull through.

  9. #9
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    Re: Distance between J-boxes

    Originally posted by infinity:
    I often wondered about the 360 degrees of bend rule for conduit. If the run is more than 360 degrees we insert a pulling point in the run. My question is by code, are we required to use it? Or if we choose, is it just to get the rope in or to slap on some pulling lube?
    I don't think code actually requires you to use it. While the code briefly mentions workmanship, it never really defines what that is.

    Personally, I have never quite understood the 360 degree rule. Its just another arbitrary rules someone made up with no real science behind it.

    There are many cases where you can pull through a lot more than 360 degrees, or not be easily able to easily pull though 90 degrees.

    IMO, this kind of thing is better left to the guy doing the work.
    Bob

  10. #10
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    Re: Distance between J-boxes

    petersonra,

    It doesn't require any more science than tying a knot.
    Frank Arizona,USA

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