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    jimcass's Avatar
    jimcass Posts: 1, Reputation: 1
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    #1

    May 7, 2009, 07:31 AM
    What schedule of pvc do we use for services risers?
    Hi I am looking for a few answers I can't seem 2 find in nfpa70, pleez help.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    May 7, 2009, 07:44 AM
    The NEC is not to be used as a design guide, I suspect that is why you are not finding answers to you questions.

    Per Section 90.1 (C)-" This Code is not intended as a design specification or as an instruction manual for untrained persons".

    Sch 40 PVC is allowed as a riser providing is attached and supported properly to the building. Any aerial line will be attached to the building separately.

    If by riser you mean a mast, a conduit that rises above the roofline for the purpose of attaching and supporting an aerial line, only steel conduit is allowed.
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