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    jerry76's Avatar
    jerry76 Posts: 3, Reputation: 1
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    #1

    Feb 22, 2015, 02:13 PM
    What size wire is needed to feed a 100amp panel out of 200amp panel?
    Feeding 100amp panel
    jerry76's Avatar
    jerry76 Posts: 3, Reputation: 1
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    #2

    Feb 22, 2015, 02:17 PM
    Wire size for 100amp panel
    Coming out from my house panel to new building
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #3

    Feb 22, 2015, 02:20 PM
    We need more information.

    Is the panelboard in a remote structure? How far apart are the two panelboard's?

    Jerry please keep you questions and responses in the same thread.
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    jerry76 Posts: 3, Reputation: 1
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    #4

    Feb 22, 2015, 02:24 PM
    Quote Originally Posted by donf View Post
    We need more information.

    Is the panelboard in a remote structure? How far apart are the two panelboard's?
    Its go be inside storage building and about 200ft apart

    Quote Originally Posted by donf View Post
    We need more information.

    Is the panelboard in a remote structure? How far apart are the two panelboard's?

    Jerry please keep you questions and responses in the same thread.
    OK
    Thank you for your help
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
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    #5

    Feb 22, 2015, 02:31 PM
    To drive 100 amp 200 feet underground, will take a four wire aluminum 2/0 AWG. Also, neutral and ground have to be isolated at the remote panelboard and the remote building must have its own grounding system.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #6

    Feb 23, 2015, 08:06 AM
    Quote Originally Posted by donf View Post
    To drive 100 amp 200 feet underground, will take a four wire aluminum 2 AWG.

    Actually, it 2/0, not 2. At that distance 2 AWG just won't cut it.
    If it was a service panel, 2 would be adequate sine you can de-rate a service... but not for a sub-panel.
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
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    #7

    Feb 23, 2015, 09:08 AM
    M.B.

    Thanks for catching my typo. Don
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #8

    Feb 23, 2015, 09:53 AM
    Quote Originally Posted by donf View Post
    M.B.

    Thanks for catching my typo. Don
    No problem... I'm sure you have caught many of mine... not to mention errors.
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