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    Buffalobill66's Avatar
    Buffalobill66 Posts: 1, Reputation: 1
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    #1

    Mar 23, 2015, 07:01 PM
    Is the main to small
    House has a dbl 50amp main.. furance is a dbl 100 and the range is a dbl 50.. does this sound right
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    Mar 23, 2015, 07:30 PM
    No. Sure it's not a 150? that is very common. What is the rating for the furnace?
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #3

    Mar 24, 2015, 03:32 AM
    The current code requirement is for 60 amps. This has been the requirement for quite some time. If you have a main breaker panel I suspect that you are at the 100 amp service.

    Prior to the current level, a residence was required to have a minimum of 60 amp service.

    Please note, you do not add up the various sizes of the breakers in the panelboard box to determine the size of your incoming service.

    Are you sure that you have a Main Breaker panelboard and not a Main Lug panelboard?
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #4

    Mar 24, 2015, 03:53 AM
    Quote Originally Posted by Buffalobill66 View Post
    House has a dbl 50amp main.. furance is a dbl 100 and the range is a dbl 50.. does this sound right
    Right for what?
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #5

    Mar 25, 2015, 06:36 AM
    To answer your first question... it doesn't sound right. 100 amp furnace breaker tells me you either have a large heat pump or electric heat. And a 50amp main just won't cut it. Post a picture of your panel (close up) with the main breaker clearly visible.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #6

    Mar 25, 2015, 01:37 PM
    A 50A lighting main is perfectly fine. It's obvious this is some sort of split service, or possibly a split-buss panel. The 50 is obviously not the main main, it's only one of the mains.
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