current draw on small 12v winch

Submitted: Friday, Mar 31, 2006 at 00:23
ThreadID: 32372 Views:12683 Replies:5 FollowUps:6
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i am fitting a 'supercheap' 12v winch on my trailer to pull the microlight up the ramps. the thing only weighs 180kg so thats no prob.
what i need the expected current draw of the winch, because if it is low enough, i will use it in the engel socket at the rear door. (this socket is wired direct to the aux batt with a 30a fuse and figure 8 cable, about 18 AWG).18 AWG is rated at 7A.
the winch is (and i quote from the box) a 0.45HP or 3Kw at peak.
the trusty formula P= I x V gives me 250 amps!
this would probably burn a long line in the floor carpet.
surely this can't be correct, or am i in for some re-wiring?
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