Why not use 12 volts for your camper. 12v items are more and more available today . Microwaves, a/c , will require a generator /or shore power anyway. TV 's are 12 volt, lighting and most everything e...
If the OP is worried about a inverter catching fire then don't purchase the cheapest one made and buy a decent quality inverter. Thousands of high quality inverters used in class A without issue. Buy a 39.95 special with undersized wire and wonder why you have a issue and complain.