Thor Forums

[ducksface]

Originally Posted by Beau388

It all depends on the maximum current (amperage) you expect to draw from the battery. In other words, 1/2 of the total expected draw. Typically there is a 50 amp circuit breaker in the converter and the battery bank cable and a 100 amp circuit breaker on the cable to the generator starter motor and the jack motor. So, 4 ga will carry 100 amps (with a 3% loss), but to connect the batteries together, you would only flow 50 amps from each battery; thus the answer would be 6 ga. If you have an 1000 watt inverter, it should have a 100 amp circuit breaker, also; so the answer remains 6 ga is sufficient.

Is sufficient, sufficient, when given a very similar cost alternative?
That is my point. Mine isn't a mathematical solvent. It is a practicality of required labor vs the cost of larger wire and potential future draw solvent.

The labor is the same, the routing is the same, the cost differential is negligible and there is no down side to the larger wire(unless you all know of one that is pertinent.).
Unless you can't afford it, why not upgrade now for the potential 3000w inverter?

My system has a 350a fuse.