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Thread: Panel Subfeed

  1. #1
    Join Date
    May 2003
    Posts
    1,139

    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
    Maryland
    Posts
    11,630
    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


    Derek

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