jrnymn7 wrote:
BFL13 wrote:
Not sure about #4 from the PM but try it and see. I use fatter than that #1 18" for the 100amper.
i'm not sure if even 2ga would fit in the screw connectors of the 75amper? i'll check it tomorrow. i do know the ground barely took 6ga.
You are allowed to fit whatever will go into the set-screw terminals and let those be short "pigtails" joined to fat wires fore the long run.
If the charger is right next to your big inverter that has fat wires from the batts to its terminals, you can wire the charger over to the inverter and then both use the same set of fat wires to the batts.
Or you can shave strands from the fat wire ends till they fit in the terminals, or you can buy metal lugs that crimp onto the fat wire ends and then the metal changes to a sort of spike that fits into the set-screw hole. Actually the set-screw holds those spikes better than a squashed bunch of strands.
All based on the fact that the pigtail or thinner strand length is short so it doesn't need to be so fat to carry the current as does the long run of wire.
I use #8 for the chassis grounds on my deck mount converter and inverters. The owner's manual would have advice on the minimum gauge for that.
