Generator duration

kemer wrote:
Our Winnebago has a 80 gal gas tank. The generator is suppose to run on the top 3rd of the gas tank, meaning that when full, I have approx 25 gal of gas to use for the generator. Question...about how long can I run the generator on this amount of gas...in other words, how many hours per gallon? Just wondering if generators are gas hogs or pretty efficient in general......

THANKS

BTW...it is an Onan generator....not sure at typing time what size exactly.

Usually, it's the upper 3/4, but to answer your question, fuel consumption will vary with the load and one could safely say that at full load, never more than one gallon per hour. We average about 3/4 gallon per hour in the heat of the day, with our old 5.5kw relic, at my best estimate. Same size new, should be a little better and with a newer an much larger diesel unit, I would expect about the same as an old gas 5.5kw.