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    Maciek's Avatar
    Maciek Posts: 7, Reputation: 1
    New Member
    		  
    #1

    Sep 18, 2008, 05:04 PM
    100A or less?
    On a sub panel there are 3 30A breakers for dryer, water heater, and heat/air unit

    Considering that all of them, most likely, will run at the same time
    Do I need to run a 100A wire to it form the main box, about 50 feet away or can a smaller gauge wire would be OK?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Sep 18, 2008, 05:22 PM
    If you want to run anything else from this sub-panel you definitely should go with a 90 or 100A feeder.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #3

    Sep 18, 2008, 07:45 PM
    Why are these three majors on a sub panel?
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
    Senior Member
    		  
    #4

    Sep 18, 2008, 09:20 PM
    Quote Originally Posted by stanfortyman
    If you want to run anything else from this sub-panel you definitely should go with a 90 or 100A feeder.
    I agree!
    Maciek's Avatar
    Maciek Posts: 7, Reputation: 1
    New Member
    		  
    #5

    Sep 19, 2008, 05:10 AM
    Quote Originally Posted by Missouri Bound
    Why are these three majors on a sub panel?
    No idea why but, that's how it was when I got into this house,
    I haven't really though about running them back to the main box but I thought it would be cheaper to just run that wire but I guess I have to price it to really know that

    And this is a 100A box for 6 breakers, so with 3 240v breakers there is no room for anything else

    Maybe it'll be better just to run everything back to the main panel since its not that far away and everything is open

    If I did run the 100A feed to it I would need 3 #2 wires correct? Since there is only 3 connections in the box and its still inside the house?
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