Posted by LJD on December 31, 2011 at 14:16:03 from (75.251.87.217):
In Reply to: Re: Powering a winch posted by Jim in Ma. on December 31, 2011 at 11:20:29:
With a 12 volt, 12,000 lb winch? Not a chance. It will draw as much current as a starter motor on a diesel truck. A 12 or 14 gauge wire would barely even make a 350 amp motor humm, much less pull anything.
Just a 10 foot piece of 12 gauge wire with 350 amps at 12 volts has a drop of 11 volts. I.e. all is does is heat the wire until the insulation melts.
Even if you cut the amps in half (which you can't) there is a 6 volt drop.
If you somehow raised the DC voltage to 120 volts - a 10 foot piece of 12 gauge wire could power thew winch. How'd you do that, I don't know? A 12-120 step-up transformer at one end and then a 120-12 step-down transformer at the other?
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