What gauge wire from batteries to inverter

GordonThree wrote:
Gotta love AGM for their flexibility. My setup sounds sounds similar to BFL13's ... I have my 2800w inverter snuggled with four G31 12v AGM under a heavily reinforced dinette seat. More than four years now, no issues with anything. It's a bit untidy, I left slack in my 4/0 welding cable to be able to pull out the inverter without disconnecting the batteries, for troubleshooting or whatever.

Load test, run the 13.5 A/C and the microwave, the inverter heats up a bit, that fan gets going good but the battery cables stay nice and cool while carrying almost 300 amps.

Sort of. In our Class C, the regular sealed/vented battery box is under a dinette seat. It will hold two 6s or similar. Has access door to outside.

I put the two AGMs inside under the sink counter for the inverter-only job, and still have the OEM battery box under the dinette for the regular 12v job the house batts do. I gave each battery bank its own converter/charger and solar set. (I also have a second set of batteries added to the "house 12v set" but down farther in another outside compartment, making four that do the 12v stuff. Had to drill holes to pass wires.

So in a TT I would leave the tongue battery bank as is, and use it for the same old 12v stuff, and add a second battery bank of AGMs inside just to do the inverter 120v stuff.

I really like having the inverter 11v alarm business free from the regular house batts, that might get too low running the furnace and then not be able to make toast using the 120v toaster for breakfast. Yipes! Have to use the horrible bread-burner on top of the propane stove for making toast? Never again! :(