Join Date: Mar 2002
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Re: Winch wiring, splicing high amp wires?
Consider that over 10ft, 2-gauge wire looses 2 volts at 400 amps -- that includes length of both positive and ground together. Think about that before you splice a bunch of it together. That will make the winch go from pulling 400A to 470A -- which makes for an overheated winch and more voltage drop..... you get the picture.
If you really need to, you can get more of that 2-gauge stuff at most autoparts stores for about $1.00/foot. Just buy enough of it to go wherever you need it.
That 2/0 welding cable costs about $2.00/foot, and works much better, but is real heavy -- like 1#/foot. It only looses like .2V at 10ft for the same 400A. That makes your winch and battery much happier.
For covering connections, you can buy heat-shrink tubing at most electrical supply houses. They will sell most any size you want. It costs about $3.00/foot or so for the stuff that works with 2/0 welding cable. That liquid electrical tape stuff or plasti-dip should do the trick too.