What determines battery cable size?
Hey all, I'm looking into replacing the factory battery cables in the spring to hopefully get more efficient (as in shorter) generator charging time. My question is, what do I "need to do" vs. what...
Forum Discussion
About 4 ft of #4 each wire (pos and neg) from the 75 amper to the battery will get you the 75 amps. ( I have one of those converters)
I don't know how much longer of #4 will still get you the 75 amps, but a few less amps won't make much difference to your recharge time on 2 batteries if you have to go long. Stay with the frame for the neg--that counts as a fat short wire. Then you just need a long #4 for the pos.
Don't bother with anything less than #4 with the 75 amper.
You can use the 75 amper as a portable charger for generator charging, and leave the WFCO in as the converter for when on shore power. That way you get the short run from 75 amper to the batts. Using #4 AWG (cu, not cu-al) jumper cable ends to get the clamps is the easy way to do that.
I don't know how much longer of #4 will still get you the 75 amps, but a few less amps won't make much difference to your recharge time on 2 batteries if you have to go long. Stay with the frame for the neg--that counts as a fat short wire. Then you just need a long #4 for the pos.
Don't bother with anything less than #4 with the 75 amper.
You can use the 75 amper as a portable charger for generator charging, and leave the WFCO in as the converter for when on shore power. That way you get the short run from 75 amper to the batts. Using #4 AWG (cu, not cu-al) jumper cable ends to get the clamps is the easy way to do that.
