danemayer
Well-known member
I would also like some input regarding generators, gas versus propane, what size is best for 41' 5th wheel with two ac.
Appreciate any suggestions anyone has, preferrably from someone who has had or knows someone who has had experience with either,
We have a 39' 5th wheel with 2 A/C units, washer/dryer, fireplace, 4 door refrigerator, etc. It runs off 50Amp campground electric and we have the Onan 5500 LP generator (factory install) which provides 50Amp service when not plugged into shore power. Everything runs correctly off either shore power or off the generator.
The LP generator is reasonably quiet - we have slept with it running. Nevertheless, some campgrounds probably won't permit its use during quiet hours.
Generators are expensive to run. 12 hours with A/C running will consume most of a 40# tank of LP. At $3-4/gallon, that's $27-36 in propane to run the generator from 7PM to 7AM in hot weather. I don't have experience with gas generators, but it's probably not much different.
We mostly use ours for short stints: for backup power temporarily during a storm outage, if we need to power an air compressor while on the road, to charge the battery in a pinch.
There's a factory option called "Generator Prep" that is required in order to install the Onan 5500. I believe it includes the transfer switch and wiring, exhaust plumbing, and probably some other stuff. From what I've read, this is not a simple thing to add outside the factory. If you don't have it, you'll need to find a place that has experience with installing the prep option and the generator.
One other note: the 50Amp shore power connection is actually two 50Amp 110V circuits. Add up the current requirements for 2 A/C units, coffee maker, microwave, hair dryer, and clothes dryer, which could all be running at the same time, and you'll see that you need the generator to power both 50Amp circuits or you'll have to carefully manage which devices are running concurrently - like you would have to if plugged into 30Amp shore power.