I donít know your coach specifics but typically inverters can draw high currents on the DC (coach battery) wiring side (depending on size of inverter). So that usually means large gauge and shortest possible DC power feeder wires from battery to inverter. I would expect either a special high amp rated fuse or a circuit breaker for the inverter, mounted close to the coach batteries. Follow the battery + wire if you can. The coach will likely also have a single 100 Amp cct breaker close to the coach batteries for jack pump motor and generator start power feeds too.