Originally Posted by telcoman
Generally speaking you are best to put it close to the convertor. Your battery leads go there anyways, so should be of sufficient gauge. That also allow you to pick what circuits you want to go to the inverter which allows you to use the style which auto switches when the power is off without feeding items with too much current draw to run off an inverter like an A/c, or items you don't want to run off like a fridge which you want to auto switch to gas if no power. Generally speaking you only want small appliances, TV's etc to run off an inverter.
It would be easiest there for a small inverter, but most coaches only have a 50 Amp DC breaker between the batteries and converter and wire sized for that current, so that would be a bad idea for any inverter bigger than about 400 watts - and that's pushing it as there are other DC loads to consider.