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    MJS17's Avatar
    MJS17 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 15, 2014, 03:52 PM
    Cooktop 30 amp Breaker Consequences
    I have wired a cooktop to a 30 amp breaker but the specs call for a 40 amp. What will happen?
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    Jul 15, 2014, 04:20 PM
    Do you mean apart from the electrical code violations?

    If the cooktop tries to draw the full 40 amps, the 30 amp breaker will trip.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #3

    Jul 15, 2014, 04:23 PM
    If the specs call for a 40A circuit why did you wire it to 30A?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #4

    Jul 15, 2014, 07:24 PM
    It will trip the breaker and you will not be able to use the unit.
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #5

    Jul 16, 2014, 06:05 AM
    Can you tell us how this happened? Was the wire already in place? Did you simply make a mistake? It's not going to hurt the appliance, but it will limit just how much of it you can use at once. The breaker tripping will get annoying enough for you to do it correctly.
    hfcarson's Avatar
    hfcarson Posts: 1,003, Reputation: 49
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    #6

    Jul 17, 2014, 03:51 AM
    have you tried it?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #7

    Jul 17, 2014, 04:50 AM
    I'm guessing they were trying to avoid spending the roughly $12 for the correct breaker or didn't find out what the requirements were before wiring the job and undersized everything.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #8

    Jul 17, 2014, 06:03 PM
    Don't change that breaker unless you also change the wiring.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #9

    Jul 17, 2014, 06:07 PM
    Agreed... what size wire is in it now?
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