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Old 05-22-2015, 03:41 PM   #1
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Onan 4000 vs 7000

Correction: 2015 Winnebago Adventurers 38Q comes with the 5500w while Tiffin Allegros have the 7000w.

What are the advantages of the larger genset? In other words,I guess,What all can the 7000w power at the same time that the 5500w can't?
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Old 05-22-2015, 03:46 PM   #2
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generators

a 4000 watt generator will run 1 A/C and the accessories, 7000 watt gen will run 2 gens and the accessories. Your Winnie must have 1 A/C unit, the Allegro will have 2 A/C units
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Old 05-22-2015, 03:56 PM   #3
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About the same as a 30 amp vers 50 amp service
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Old 05-22-2015, 03:56 PM   #4
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Correction. The Adventurer 38Q has a 5500w with 2 AC units on top.
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Old 05-22-2015, 04:06 PM   #5
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I have a 2012 Itasca Sunstar... It has the 5500W Onan in it and I can run both of my A/C units without any issues..

My guess.. Maybe the Tiffin has a residential refrigerator?

Either way... I've never had an issue with power while using my generator
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Old 05-22-2015, 04:11 PM   #6
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Quote:
Originally Posted by Tha_Rooster View Post
About the same as a 30 amp vers 50 amp service
Not really:
30 amps = 30 X 120 = 3,600 watts
50 amps = 50 X 120 X 2 = 12,000 watts

7000 watts = 58.33 amps or just over a true 50 amp RV service.
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Old 05-22-2015, 07:02 PM   #7
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We have the 5500 Onan, and have two AC's with heat pumps. The generator is more than enough to run everything plus an electric water heater, fridge, fireplace, we have noticed no difference between being on the 50 amp shore power and the generator. Tiffin has in the last several years put the 7000 Onan in, even with the standard propane/electric fridges.
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Old 05-23-2015, 07:25 AM   #8
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There's a lot of possibilities. If we're talking a diesel rig here, the 7K may be a very desirable (not to mention expensive) QD (quiet diesel)? Could it be propane vs. gas or diesel?
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Old 05-23-2015, 08:01 AM   #9
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Both gas.
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Old 09-20-2015, 09:50 PM   #10
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We may be ordering the Canyon Star. 5500 W/120V = 45.8 A, which is pretty close to 50 A shore power. That's enough to run both ACs, the residential refrigerator and a television or two. Am I missing something? The 7 Kw generator seems unnecessary. Mike and Cha's answer is based on experience. Think we'll go with the 5.5 Onan unless there's a compelling reason not to.
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Old 09-20-2015, 10:00 PM   #11
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Quote:
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We may be ordering the Canyon Star. 5500 W/120V = 45.8 A, which is pretty close to 50 A shore power. That's enough to run both ACs, the residential refrigerator and a television or two. Am I missing something? The 7 Kw generator seems unnecessary. Mike and Cha's answer is based on experience. Think we'll go with the 5.5 Onan unless there's a compelling reason not to.

A 50 amp system in an RV is 2 legs each 50 amps for a total of 12,000 watts.


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Old 09-20-2015, 10:18 PM   #12
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We may be ordering the Canyon Star. 5500 W/120V = 45.8 A, which is pretty close to 50 A shore power.
Actually it's not, see post #6 above.
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Old 09-21-2015, 09:42 AM   #13
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For the uneducated on Gens numbers don't mean much. Much simpler is a 5500 can run three items and a 7000 can run four.
1 A/C
2 A/C
3 micro
4 inverter
5 water heater(electric)
6 refer on electric
Oh and don't forget the inverter if the batteries are on the low side.
And in the newer units an entertainment center may be a extra as the don't draw much.
OK flame me, it's simple.

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Old 09-21-2015, 08:38 PM   #14
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Thanks everyone for your patience with a non-electrician. That is actually quite helpful. Now I can make an informed decision.
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