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

    Jun 29, 2010, 01:34 PM
    When can you use a main lug only electrical panel
    I am install a 400 amp 480 volt panel outside a building. It will be fed from a breaker inside. Can this panel be a MLO or does it have to have a main breaker or disconnect.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jun 29, 2010, 01:58 PM
    Does not need to have a main, may be helpful for the local operation, but, as long as the main can be locked off, no problem.

    It will need to be at least rain tight.
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