RV Repair Manual
for the RV Do-It-Yourselfer
Never run your generator when you are sleeping! Even with a carbon monoxide detector. Carbon monoxide is deadly and it's not worth the risk. Generators are designed to run for long periods of time if they have the correct percentage of load on them. You should consult the generator owner's manual for load ratings.
You also need to consider where you will be camping at, and how much fuel you will use running the generator. They consume about a gallon of fuel per hour. You need to be considerate of other campers when using a generator for long periods of time. Sometimes you're better off just opening all of the windows to create a breeze through the RV.
This tip contributed by Mark Polk at RV Education 101