Quote Originally Posted by blackbonnie View Post
any 1/0 will work, just car audio wire tends to be more flexible. and for your fuse, a 300amp ANL fuse is what you need

Ummm How bout NO!!!! Unless his total power draw is close to it.
Lets say If the total power draw is 200 amps throwing 300 amp fuse is a fire hazard waiting to happen. There are other things to consider aka the thermal rating of the insulation of the wire itself but for the best way is to fuse to the max current you are pulling.

Again if the max current is 250 then should really use a 275. I have also been told in training and through life long electricians that you can have a 10% margin from the max load.