Originally Posted by herk7769
Depends also on the voltage at your campground.
If your AC seems to "lug" when starting (or a volt meter shows campground voltage 115 VAC or below - USA), then I would turn off the AC portion water heater and use gas. Below 110 VAC; switch the fridge to gas as well.
Another thing to always bear in mind is that the 120 volt electric heating element will draw between 9-13 amps average, when it's heating. If you have a 30 amp RV, or hooked to a 30 amp power outlet, this will limit what else you can run in your RV at the same time........as you are limited to 30 amps total.
You may need to turn off the electric heating element, when using other things in conjunction to keep your total amps at 30 or below......so you don't overload/trip the breakers.
Mark Polk has a list of common AC and DC amp usages (as well as a great explanation on the function of converters) at the following link: