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

    Dec 22, 2012, 01:27 PM
    30 amp heater wiring
    I have a 240 volt heater 2 wire (plus ground).
    I want to temporarily use the heater out in my shed . I have run 10/2 cab tire cord from the house to the shed.
    Now at the house end I would like to plug the 10/2 cord into my 30 amp dryer receptical. I have a spare 4prong plug from an old dryer. Can I join the end of the 3 wire plug to the 2 wire heater cord using only black to black , white to white ground to ground and then cap off the third red wire from the dryer plug ?
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #2

    Dec 22, 2012, 01:38 PM
    What is a cab tire cord? What is temporary?

    With 4 prong plug the voltage is 120 black to white, 120 red to white and 240 black to red.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #3

    Dec 22, 2012, 04:31 PM
    You sound dangerous -to yourself -if you are going to start plugging things in. 4 prong is a 120/240 as is a 3 prong. For 240 you need 2 hots and a ground with a double breaker.
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