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05-22-2015, 02:41 PM
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#1
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Senior Member
Winnebago Owners Club
Join Date: Mar 2009
Posts: 288
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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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Hugh & Roberta
George & Gracie(Boston Terrors)
04 Honda CRV
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05-22-2015, 02:46 PM
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#2
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Senior Member
Join Date: Apr 2013
Location: Long Beach, Calif.
Posts: 220
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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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Travel Supreme 03 40DS03
Cummins 400 HP ISL 8.9
2010 Jeep Wrangler JK
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05-22-2015, 02:56 PM
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#3
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Senior Member
Join Date: Aug 2008
Location: Georgia
Posts: 8,638
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About the same as a 30 amp vers 50 amp service
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2007 Fleetwood Revolution LE 40V
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05-22-2015, 02:56 PM
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#4
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Senior Member
Winnebago Owners Club
Join Date: Mar 2009
Posts: 288
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Correction. The Adventurer 38Q has a 5500w with 2 AC units on top.
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Hugh & Roberta
George & Gracie(Boston Terrors)
04 Honda CRV
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05-22-2015, 03:06 PM
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#5
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Senior Member
Join Date: Mar 2014
Location: Oak Creek, WI
Posts: 1,143
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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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Eric & Denise
2012 Itasca Sunstar 35F W/ 5-Star Tuner
2017 Harley-Davidson Ultra Limited
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05-22-2015, 03:11 PM
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#6
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by Tha_Rooster
About the same as a 30 amp vers 50 amp service
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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 ½ a true 50 amp RV service.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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05-22-2015, 06:02 PM
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#7
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Senior Member
Join Date: May 2014
Posts: 3,059
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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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Mike & Charlotte
2014 Newmar Canyon Star 3610
Orange County, California
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05-23-2015, 06:25 AM
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#8
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Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
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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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1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
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05-23-2015, 07:01 AM
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#9
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Senior Member
Winnebago Owners Club
Join Date: Mar 2009
Posts: 288
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Both gas.
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Hugh & Roberta
George & Gracie(Boston Terrors)
04 Honda CRV
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09-20-2015, 08:50 PM
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#10
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Junior Member
Join Date: Sep 2015
Posts: 16
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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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09-20-2015, 09:00 PM
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#11
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Moderator Emeritus
Newmar Owners Club
Join Date: Apr 2014
Location: Southern Indiana
Posts: 19,417
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Quote:
Originally Posted by JayKay100
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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A 50 amp system in an RV is 2 legs each 50 amps for a total of 12,000 watts.
Steve
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Steve
2002 Newmar Mountain Aire 4095
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09-20-2015, 09:18 PM
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#12
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by JayKay100
We may be ordering the Canyon Star. 5500 W/120V = 45.8 A, which is pretty close to 50 A shore power.
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Actually it's not, see post #6 above.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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09-21-2015, 08:42 AM
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#13
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Senior Member
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,772
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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.
LEN
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2004 Clss C 31' Winnebgo
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09-21-2015, 07:38 PM
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#14
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Junior Member
Join Date: Sep 2015
Posts: 16
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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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