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Thread: Panel Subfeed

  1. #1
    Join Date
    May 2003
    Posts
    655

    Panel Subfeed

    My question relates to this panel, is there anything code or listing wise prohibiting using the main lugs of a panel where a backfed main has been installed, to subfeed another panel?



    Since the breaker is bolt-on, any concerns about a retainer/ hold down bracket do not apply. Please forgive my cell phone pic & the pic will not display w/ the correct rotation.

    From the 2011 NEC, 408.36(D). (F) in earlier editions.

    (D) Back-Fed Devices. Plug-in-type overcurrent protection
    devices or plug-in type main lug assemblies that are
    backfed and used to terminate field-installed ungrounded
    supply conductors shall be secured in place by an additional
    fastener that requires other than a pull to release the
    device from the mounting means on the panel.

  2. #2
    Join Date
    Jan 2009
    Location
    Easton, Maryland NEC: 2011
    Posts
    7,465
    Quote Originally Posted by norcal View Post
    My question relates to this panel, is there anything code or listing wise prohibiting using the main lugs of a panel where a backfed main has been installed, to subfeed another panel?
    Only the calculated load is a consideration. You can feed as many panels as you want from the back fed panel, through the lugs, as long as 215.2 and 408.30 are met.
    Last edited by jumper; 08-20-12 at 02:33 AM.
    "Electricity is really just organized lightning." George Carlin


    Derék

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