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Old 04-01-2011, 12:25 PM
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Default propane generator run time



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I was wondering. For those of you that have propane powered generators, how long does it generally run on a given amount of propane? I realize there are alot of variables such as generator size, load, and tank size. It would be nice to see some numbers.
Old 04-01-2011, 12:32 PM
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Most in the 3-4k watt range burn about 1.5 lbs per hour at 50%. 5-7k watt will burn about 2-2.5 lbs per hour at 50%.

Some of the smaller inverter models that have been switched to propane will get alot better.

Hopefully I will own a propane gen someday

BIH
Old 04-01-2011, 12:53 PM
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Check the specs. on your generator. It should tell how much it uses at 50% load, 80% load, etc.
Old 04-01-2011, 10:13 PM
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Size is everything. Based on a recent ice storm induced power outage, I went through about 80 gallons in 84 hours of constant operation of my 15KW generator.
Old 04-01-2011, 10:18 PM
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Quote:
Originally Posted by webfarmer View Post
Size is everything. Based on a recent ice storm induced power outage, I went through about 80 gallons in 84 hours of constant operation of my 15KW generator.
80 gallons of propane or gas?
Old 04-01-2011, 10:23 PM
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I think 80 gallons of propane would be about 320 lbs. So that's about 4 lbs an hour.
Old 04-01-2011, 10:23 PM
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Default 25 kw

I have 25 kw and a 1000 gal tank i can run everything in my home at same time and it use is 3 gal a hr
Old 04-01-2011, 10:57 PM
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Quote:
Originally Posted by bigislandhikers View Post
80 gallons of propane or gas?
The fuel is propane.
Old 04-01-2011, 11:11 PM
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A propane genny IMO isnt very economical mine is a 13 k it runs wide open all the time and i have a 500 gal inground tank which cost me 1700.00 to fill it last time and I emptied it in one week when i was running it solid to build my garage,i will never buy another,I did buy a little honda 2000 watt gas genny,it runs all my lights,fridge,tv,fan ect and it runs about 10 hrs on a gal of gas,it cost me 900.00 if im spending another 4000.00 for power it will be solar panels,I might even sell my 13 k this summer and buy solar.Just my 2 cents from exp.
Old 04-02-2011, 01:57 AM
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I have a Generac 8000 watt propane. I will not run it full time. That is a real waste of fuel. Mine burns .94 gallons per hour. This would use a 100 pound cylinder per day running it non stop. Mine is for running my pump only at 1/2 hour per week to pump water which we then store in 10 -7 gallon water cans. The good thing about propane is that it lasts forever. No need to put anything in it just let it set. I will be adding a 500 gallon tank this summer and with my 2 100 pound cylinders Ill have near 550 gallons in reserve.

During that 1/2 hour while we are filling the jugs which takes about 20 minutes we will also use that power for a few other things like an electric saw or my small 110 mig welder. But 1/2 hour per week is as much as we can afford to use it.

I have 3000 watt gas generator(honda) for running 110 stuff short term like my frig and freezer. 4 times per day to keep things cold. We are building a small solar array for backup for low load stuff. There is no real cheap way to have a Generator running 24/7. Even powered by wood gas would require tons of wood for fuel. There is no real cheap way to replace the grid power you have now. Our plan is to use fuel that will never go bad and ration it to last as long as possible. Kingfish
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Old 04-02-2011, 09:48 AM
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Yeah, not cheap to run for sure. Mine starts automatically after an outage and turns off when power is restored. In a SHTF scenario where power is lost long term, I'll run it only 2-3 hours per day to keep the freezer and fridge to temp, batteries charged or whatever.
Old 04-02-2011, 10:00 AM
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http://www.propane-generators.com/

They have conversion kits for any gasoline powered generator, including tri-fuel (natural gas/propane/gasoline) and have charts that show run time.
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