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    pkhop's Avatar
    pkhop Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 29, 2011, 11:54 PM
    8 or 10 gauge wire for an appliance that draws 33 amps
    I'm setting a home brewery in the basement of my house. It's built around a piece of the commercial restaurant equipment that draws 33 amps. It's not a motor, it has a 9kW element so I'm was planning to use a 40 amp breaker (which I have room for) and 8 gauge cable but I've think I've read too much today and become confused. Do I need 8 gauge or is 10 OK.

    Thanks in advance
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #2

    Jan 30, 2011, 05:00 AM
    You will not like the answer I give you, a 33 amp load needs a 50 amp breaker.

    Can use #8 copper if part of an MC cable . Or will need #6 copper NM Romex cable.

    Per the Code, electric heat circuit must be rated 125% of the load amps, 33 x 1.25 = 41.25 amps.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #3

    Jan 30, 2011, 05:13 AM

    Besides, 9kW is 37.50A @ 240V, plus any motors, lights or controls.
    50A circuit it is!
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
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    #4

    Jan 30, 2011, 05:25 AM
    Shows what happens when I take someone words. I did not check the 9 KW load amps.
    pkhop's Avatar
    pkhop Posts: 2, Reputation: 1
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    #5

    Jan 30, 2011, 12:48 PM
    Ouch, that's going to be expensive - It's a 50' run. The element is rated 9 kW at 230V. Thanks to both of you.
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