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    Kyle_in_rure's Avatar
    Kyle_in_rure Posts: 341, Reputation: 10
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    #1

    Jan 21, 2012, 03:50 PM
    Sub panel question
    I was thinking of running a 60 amp sub panel to a barn about 75 feet from the main panel. I've read that in a sub panel ground and neutral must be separated. However, can I just run three wires (hot, hot, neutral) to the barn, and drive a grounding rod at the sub panel, and leave the ground and neutral bonded in the subpanel? Thanks
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jan 22, 2012, 04:46 AM
    No, the new feeder must be 4 wire, with two hots, one insulated neutral and one insulated equipment ground conductor.

    The three wire method is no longer allowed.
    Kyle_in_rure's Avatar
    Kyle_in_rure Posts: 341, Reputation: 10
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    #3

    Jan 22, 2012, 11:13 AM
    Is there a particular reason this is no longer allowed?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    Jan 23, 2012, 03:31 AM
    4 wire system is safer than 3 wire.
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