how to wire a 240v 4000w shop heater from a 100a breaker


Old 01-04-10, 08:57 AM
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how to wire a 240v 4000w shop heater from a 100a breaker

hi guys.

i'm new here so go please go easy on me if i ask something that has been answered many times before.

i plan on using 10-2 romex buried cable and i'm gonna be running it about 100ft.

i wanna tie into the 100a main breaker outside on the pole. does anyone have any diagrams or advice on how to do this.

also the heater has a nema 6-30p plug. do i need to put a 30a breaker box in the line or would it be ok without it?

thanks in advance for any advice,
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Old 01-04-10, 09:46 AM
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Does your 100A breaker panel at the pole have open slots available?

Will the heater be used in a building? If so, is there other wiring in the building?
Old 01-04-10, 12:55 PM
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While you answer Ben's questions, I just want to clarify that you will be running 10-2 WG UF. I know we use the term "romex" very loosely. I just don't want you to run NM underground where UF should be used.
I know where Ben is going, so I'll jump the gun. If there is no other power in the building why not spring a few extra bucks and wire it to accommodate lighting, receptacles, etc while you are at it. But I'll let you answer the questions first.
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