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    ARVINDNIGAM's Avatar
    ARVINDNIGAM Posts: 3, Reputation: 1
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    #1

    Jan 22, 2007, 07:31 PM
    400 Amp , Feeder Wires?
    We Have A 400 Amp Service, What Size Should The Feeder (wires) Be?

    Need To Know

    Thanks
    Please Help

    Arvind
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jan 23, 2007, 03:38 AM
    Typically either 500 MCM copper or 750 MCM aluminum is used for 400 amp, but there are other circumstances where other sizes would be used, depending on the insultion, distances, etc.

    And there are various smaller sizes that can be paralleled.

    There is no one answer to your question without knowing the details.
    ARVINDNIGAM's Avatar
    ARVINDNIGAM Posts: 3, Reputation: 1
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    #3

    Jan 23, 2007, 09:20 AM
    Thanks For Your Response, I Am Going To Refer To The Code Book Now
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    Jan 23, 2007, 02:50 PM
    Oh I should have asked if this was a residential service, which will allow #400 MCM copper or #600 MCM aluminum.
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