what size gauge wire for 460A draw max?

RootBreaker · 05-28-2008, 11:54 AM

read the forum rules so putting this in off topic... hopefully it gets some responses....

I asked a question about the difference of battery isolators and relays...

now the other question...

I am trying to wire up my truck...
I have 2 batteries under the hood that are 1000ca duralast golds in parallel.
They are connected to a 90a isolator on leg A
then leg b of isolator goes to 2x1300ca batteries in the bed.

now I have a winch that is about 8-10' away.... the rated draw is 460a max to which I used 3/0 cable.... I want to add a disconnect to the circuit for protection.

the winch came with 6' of 2 gauge wire.... so my main question is

winch comes with 2 gauge wire for a winch max draw of 460a which doesnt seem enough...

I can get a cable disconnect good for 1/0 which is rated for 430a max draw.

so thus I am confused.... should I go with 1/0 cable and disconnect to connect to the batteries???

also dont laugh too hard at my mspaint drawing.... all I had handy... also vista wouldnt let me use the text tool... so had to free hand text...

gt__1 · 07-08-2008, 12:41 PM

dont go by the rated max go by the motor FLA then you can size your wire to that.
do you know the motor data on the winch like HP?