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05-19-2010, 10:21 PM
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#1
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Junior Member
Join Date: May 2010
Location: Dover, Ohio
Posts: 9
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Gas Consumption of Generator
how much gas will my 7000w generator use?
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05-19-2010, 10:47 PM
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#2
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Community Administrator
Pond Piggies Club LA Gulf Coast Campers Outdoors RV Owners Club Entegra Owners Club Skyline Owners Group
Join Date: Mar 2002
Posts: 40,775
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We've got an Onan 5500 & our service tech says it'll use about 1 gal in 3 hours run time. Don't know if that is under load or not, though.
Lori-
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Lori (& Dave, my spirit guide) - RV/MH Hall of Fame Lifetime Member | My iRV2 Photo Albums
2016 Phoenix Cruiser 2350S, 2018 Phaeton 40IH,2006 Bounder 36Z, 2004 Cougar 285EFS, 2000 Aerolite 25FBR
There is great need for a sarcasm font.
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05-20-2010, 06:19 AM
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#3
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Senior Member
Appalachian Campers
Join Date: May 2009
Posts: 908
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My Honda 4500 will run my camper with the AC running near constant 8-10 hours on five gallons of gas. That's 5/8-1/2 gallon per hour. On a 7000 I'd suspect that will go up to 3/4-1 gallon per hour depending on engine size and load.
Interestingly if allowed to idle like when I powered my house during an outage it went nearly 24 hours on a tank. Eco throttle works.
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2001 HO Cummins powered Dodge 2500
2014 Sierra 346RETS
Nights camped in 2014-28
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05-20-2010, 06:31 AM
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#4
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Registered User
Join Date: Dec 2006
Location: Traveling the lower 48
Posts: 2,450
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A 7000 should burn 1/2 to 1 gallon per hour depending upon how much "stuff" you have running at the same time. A couple of A/C units will keep you burning on the high end and just running the TV's, microwave and battery charger would tend toward the low end of this range.
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05-20-2010, 07:27 AM
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#5
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Senior Member
Join Date: Oct 2000
Location: North East Indiana
Posts: 1,995
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Load will affect the fuel usage. Tops 1-1.25 gph.
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05-20-2010, 10:18 AM
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#6
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,713
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If you have the Onan Marquis Gold 7000 or the QG 7000, Onan rates it at 0.7 gal/hour at 50% load (3500 watts) or 1.2 ga/hr at full load (7000 watts). The LP model is slightly higher due to the lower energy per gal of LP.
Onan spec sheet for that model is at
http://www.cumminsonan.com/www/html/...ets/a-1426.pdf
Other Onan model specs at:
Cummins Onan
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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05-21-2010, 05:43 AM
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#7
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Senior Member
Damon Owners Club Vintage RV Owners Club
Join Date: Dec 2009
Location: Portage, Wi.
Posts: 211
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good ???, never thought to consider the amount of fuel being used in the generator, although when I start the MH up to run it for 10 mintues or so, I do start the generator too.
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05-21-2010, 08:17 AM
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#8
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Senior Member
Monaco Owners Club
Join Date: May 2008
Posts: 376
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RV Roamer [Gary]: Thanks for the Onan link. It answered the same question about my QD 10000.
Other Onan model specs at: Cummins Onan
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Richard and Mary Lou
2007 HR Scepter, 42PLQ
Supply Corps, USN Retired
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05-21-2010, 01:37 PM
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#9
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,713
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Generator fuel usage is typically quite small. If you are driving along with one a/c on, you are using maybe 1200-1500 watts, which is nowhere near 50% load, even on a 4000-5000 watt gas generator. The diesel gensets have even lower fuel consumption than the gas models.
It's enough to throw your mpg calculations off a bit, though.
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Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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