Jim,

I checked the fuel consumption specifically so I would have the information. I topped off the tank about 2 miles from our OSH parking. I recorded the generator hours at the start and at the end of the show, and before I got on the highway I drove the two miles back and coincidently used the same pump at the same fuel stop and let it click off like it did the week before.

I noticed Jack was running more fuel through his, but his loads were greater. I left two AC on all day while I was working the show, and the coach was closed up the whole time. I wasn't there at the coach from 7:30 until 5:30 or 6:00 so except for the refrigerator, and the inverters to charge the batteries from quiet time I wasn't using much power so my loads may have been 15 to 25 amps per leg except when I was at the coach and using lights and other appliances. I used to remember how many watts equal a horsepower (750?????) and from a calculation of your loads you can estimate approximately what your fuel consumption might be. To use 1 gallon per hour the generator is working fairly hard, which incidently is the absolute best thing you can do for it.

For a quick rule of thumb, use the generator wattage, move the decimal three places to the left (20,000 watt generator equals 20) and double that figure and you have an approximation of the HP of the motor. The amount of fuel used can then be determined by determining the HP to be used and most generator manufacturers will provide the fuel used at certain percentages of the generator's capacity