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How much fuel is used by small engine generator.


frankiee's Avatar
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12-15-07, 10:19 AM   #1  
How much fuel is used by small engine generator.

Is there a rule of thumb as to how much fuel is used per horse power with a generator in use.

For example: A 11 HP generator uses "X" gallons in 24 hours
Or a 8 HP uses "X" gallons per hour

 
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retired wrench's Avatar
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12-15-07, 05:34 PM   #2  
fuel consumption for gen

I don't think it would be possible to say how much fuel would be used. It would depend on how hard it was working. My 11 HP Onan burns a little less than a gallon an hour running the basics in the house. Heat lights pump frig ect. There are probably more efficient units than this one out there. RW

 
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12-15-07, 07:42 PM   #3  
It really depends on what the load is. I do Hardwood Floors and when we install a floor (using only 110v) on our 16hp Vanguard Briggs (10000 watts) 10 gallons of gas will get us 12+ hours of run time but if we are Sanding a floor (using a 220v 30A machine) We may only get 6-8 hours of run-time. We also have a 20hp Honda (13000 watts) that uses a little more than the briggs does. I dont know if that helps, but thats my experience.

 
frankiee's Avatar
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12-16-07, 05:17 AM   #4  
Yes that does help guys
So ball park a gal per hour or a bit more if I have tools going.
Im not trying to be precise but just to have half an idea as to how much gas I will use if power is out for a day or two

 
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12-16-07, 07:17 AM   #5  
8-10hp engines will use far less fuel than a 16-20hp engine, so bear that in mind.. On the excessive side you could say 1GPH.

 
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12-16-07, 08:29 AM   #6  
I agree with everyone here. Amount of gas used will depend on the load. My snowblower is a 8 hp 1 gal. gas tank. 1ft of light snow I will use 3/4 gal. 6" heavy wet snow, I will use 1.5 gal.

 
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