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    bobclay65's Avatar
    bobclay65 Posts: 2, Reputation: 1
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    #1

    Feb 11, 2013, 04:26 PM
    Furnace with double breaker
    I'm putting in a Payne electric furance only, No air The furnace has 2 220 breakers, inside When I run my wire from The main breaker box to the unit, Do I put the wire on each side of the breakerand jumper in the middle or do I run the wire to one of the breaker. Thanks
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Feb 11, 2013, 05:32 PM
    On a 240 volt system there are 2 conductors and a ground. Using the appropriate gauge wire, one wire goes to each breaker and terminal on the heater. Ground goes from panel ground to ground terminal. There are no "jumpers ".PS 220 does not exist today in the US. Do not attempt to install a 240 circuit yourself if you don't know what you are doing. 240 will kill you!!
    bobclay65's Avatar
    bobclay65 Posts: 2, Reputation: 1
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    #3

    Feb 11, 2013, 05:35 PM
    Quote Originally Posted by ma0641 View Post
    On a 240 volt system there are 2 conductors and a ground. Using the appropriate guage wire, one wire goes to each breaker and terminal on the heater. Ground goes from panel ground to ground terminal. There are no "jumpers ".PS 220 does not exist today in the US. Do not attempt to install a 240 circuit yourself if you don't know what you are doing. 240 will kill you!!!
    OK thanks
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    ma0641 Posts: 15,675, Reputation: 1012
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    #4

    Feb 12, 2013, 07:01 AM
    Quote Originally Posted by bobclay65 View Post
    ok thanks
    If my answer was helpful please check "helpful ". Thanks
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #5

    Feb 13, 2013, 09:14 PM
    Quote Originally Posted by ma0641 View Post
    On a 240 volt system there are 2 conductors and a ground. Using the appropriate guage wire, one wire goes to each breaker and terminal on the heater. Ground goes from panel ground to ground terminal. There are no "jumpers ".PS 220 does not exist today in the US. Do not attempt to install a 240 circuit yourself if you don't know what you are doing. 240 will kill you!!!
    Ma, on some (Rheem, Rudd, & Weather King that I kow of) electric furnaces with a pair of double pole breakers you can run a common feed & install a jumper between the two internal breakers. The jumper kit is available from Rheem. It's the same principal as a breaker panel. The breakers are protecting what's downstream of them.
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    ma0641 Posts: 15,675, Reputation: 1012
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    #6

    Feb 13, 2013, 09:21 PM
    Quote Originally Posted by Grady White View Post
    Ma, on some (Rheem, Rudd, & Weather King that I kow of) electric furnaces with a pair of double pole breakers you can run a common feed & install a jumper between the two internal breakers. The jumper kit is available from Rheem. It's the same principal as a breaker panel. The breakers are protecting what's downstream of them.
    I reread the post and did note "pair of 220" my bad. So in essence one breaker set protects the other? I am so used to straight 240 inHVAC and not paired.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #7

    Feb 14, 2013, 05:39 PM
    Ma,
    No. The breakers (usually a 30 & a 60) each protect part of the load. For example: the 30 might be tied to the control system, fan, & 5kw of heat while the 60 is often tied to an additional 10kw.
    In an application such as this & with the use of the jumper, the electrician could run a single line capable of carrying the full load instead of having to run two lines.
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