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My gas furnace will heat fine in a power outage but the blower does not work without juice. I built a wiring harness to directly power the blower from my generator and it worked like a charm to keep the house warm when it was 20F last week and the power was down for 30 hours. My furnace draws 15A and I have a 20A/2500W generator and I turn off the breaker and disconnect the feed lines so there is no back feed issues. I do not power up anything else while the furnace was on just to be safe-sane.
My experience this winter so far is that investing in a sub-panel and larger generator will be a very good thing.
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gary
Last edited by arcsine; 12-04-2006 at 03:52 PM..
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