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

    Apr 21, 2007, 07:12 PM
    Service conductor wire size
    I am wiring a two-unit apartment that previously had fuse boxes for services. I am installing a two meter box outside to supply separate 200-amp rated main circuit breaker panels, one for each apartment. The calculated load for one apartment is about 102 amps, the other about 132 amps. What minimum size wire would you suggest I use for the conductors feeding the double meter box from the utility company's overhead?
    Thanks for your help.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    Apr 22, 2007, 03:17 AM
    The smallest size wire for this calculated connected load would be 250 MCM Copper with THWN or XHHW, or 350 MCM XHHW aluminum.
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