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Nordyne 220 volt furnace is heating up the power wire

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This calculator can tell you if the gauge of wire you are using for load current & distance is supposed to be adequate.
Wiring parameters calculator
It isn't serious to have a run get 'warm' but never hot.
If the calculator doesn't make sense to you holler back and I'll see if I can help you. 

Posted on Jan 09, 2009

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You have to very careful powering up home appliances on portable generators due to back feed problems to incoming lines. I would recommend getting an experienced electrician to show and explain the problems with what you are considering. Many linemen have been shocked due to backfeed. The real way to perform this is to get the controller that is put on home generating systems such as generac type systems. These automatically isolate line supply from backup power from home generators, thereby eliminating shock hazards to linemen.
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