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    Raven41's Avatar
    Raven41 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 17, 2017, 08:16 AM
    I have a 200 amp direct bury wire and I want to branch off with a 100 amp wire OK
    I have a 200 amp direct bury wire and I want to branch off it with a 100 amp direct bury wire. One electric guy said OK but I am not sure
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    Oct 17, 2017, 10:37 AM
    Let me try to understand what you are saying. First you are leaving out quite a bit of information. You have a 200 Amp cable that you want to connect a 100 amp cable too?

    Yes you can do that, however, the maximum amperage that could be carried by either cable is roughly 80 Amps.

    Your limiting factor is the smallest cable in the circuit, in this case the 100 amp cable.
    hfcarson's Avatar
    hfcarson Posts: 1,003, Reputation: 49
    Ultra Member
    		  
    #3

    Oct 23, 2017, 04:05 AM
    This type off connection would be governed by the "Tap" rules of the National Electrical Code. Look at 240.21....
    If you really want to do it right you will need to review this or work with someone who is familiar with the rules.
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