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Old 12-07-2018, 03:44 PM   #1
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Difference in generator

I am looking at two motorhomes. The horsepower on the engine is the same. However, one has an 8000 watt generator and the other a 6000 watt generator. Practically speaking, is there a large difference in these two. I rarely camp in isolated places. I use the generator going down the highway for the AC and also when I am parked. How much difference is there??
ST
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Old 12-07-2018, 04:01 PM   #2
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How much wattage is needed if you wanted to run the AC, microwave, and other devices at the same time?
We have had a 5500, 7500, and 8000 and never have run short of power.

P.S. We seem to recall the Onan 6000-8000 series share the same maintenance schedule and most consumables are the same.
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Old 12-07-2018, 04:10 PM   #3
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

If there's not a huge price difference I would go for the larger genny. You never know what your needs will be in the future.


Good luck, happy trails, and God bless!
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Old 12-07-2018, 04:13 PM   #4
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If everything else is equal, then the difference might be a deciding factor, but there are so many other things that one should consider that unless there are 3 or more air conditioners this wouldn’t be a significant factor in deciding which to buy. We have a 7kw Onan and always have enough power to run both ACs , etc.
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Old 12-07-2018, 04:26 PM   #5
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Are both generators from the same manufacturer ? Do they both run on the same fuel ? The generators could just be rated different . One could be continuous and the other peak. Either one should work for running a couple of A/C units. I would look for other factors to decide which coach to purchase.
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Old 12-07-2018, 04:28 PM   #6
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How much of a difference is there in the prices of the rigs?
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Old 12-07-2018, 04:29 PM   #7
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Well, the difference is 2000 watts. So you can run more "stuff" at the cost of a little more fuel. Mine is a liquid cooled diesel that burns 1.7 gal per hr under full load and I can use it all.
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Old 12-07-2018, 04:30 PM   #8
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I suspect that the one with the larger genset has more power draw.. 2 15k roof A/C's vs 2 13k A/C's, possibly a larger RV or has more electrical needs..ie: larger electrical heat element in the hot water heater/residential fridge/ convection oven vs standard microwave and so on........
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Old 12-07-2018, 05:29 PM   #9
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just guessing and i do not know for sure. but the 6000 watt could be sized or 2 a/c's while the 8000 watt could be sized for 3 a/c's.
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Old 12-07-2018, 06:44 PM   #10
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Everyone, thank you for all of your help. Saddlesore- one of the motor homes has 2X 13,500 BTU AC's and the other one has 2X15,000 BTU AC's. The one with the 8K generator is a bit more money. Both are class A diesel gas motor homes. I think that each generator would work for me for that motor home. Let's see how the pricing works out
ST
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Old 12-07-2018, 06:53 PM   #11
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What does this Mean please ! (Both are class A diesel gas motor homes) ?
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Old 12-07-2018, 11:38 PM   #12
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Sorry- both are class A diesel.
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Old 12-08-2018, 01:32 AM   #13
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Quote:
Originally Posted by scotttz View Post
Sorry- both are class A diesel.
If that is the case..AND all else being equal (condition/length/amenities/...
I would go with the larger gen set..With the 15k A/C units..because it should be a full 50a electrical system, the other may be only a 30a...
NO one has said (to my limited knowledge base) that they had "too much A/C" when it is 100+ deg outside..
These RV's are nothing but a "Dutch Oven" in the summer..
And the more slides you have ..the more critical it becomes trying to keep the inside cool in the summer..or warm in the winter..



And a reminder.....
No matter what one you favor..GET an Independent Inspection of not only the running gear but the "house build" and all the systems there in..better to spend 3/400 bucks and know just what isn't up to snuff...BEFORE you lay down any hard earned peso's
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Old 12-08-2018, 06:16 AM   #14
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Almost every engine operated at less than maximum load tends to last longer and not overheat in severe conditions
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