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Old 05-10-2015, 03:59 PM   #1
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Join Date: May 2015
Posts: 2
XLR 300X12 generator

Hello, I am new to the camping scene. We just bought a xlr thunderbolt 300x12, and I was wondering, can we run both a/c's on the 5500 watt Onan?

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Old 05-10-2015, 04:01 PM   #2
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Location: Tucson, AZ
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That is what I have in my 40-12 XLR and we run both without any problems.

2012 GMC 3500HD 4x4
2009 XLR 40X12
2009 RZR ready for the trail
Days camped in '14 - 63
Days camped in '15 - 96
Days camped in '16 - 74
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Old 05-10-2015, 04:35 PM   #3
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Thanks for reply, it does fine with one a/c but bogs down and dies when I turn on the second a/c. Looks like a trip back to dealer.
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Old 05-11-2015, 09:02 PM   #4
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Location: Hilliard, Florida
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Add up what's on plus the AC units. WH? Frige? Converter draw? What else?
XLR Hyperlite 29HFS
Ram 2500 6.7L CTD
Triumph Thunderbird

A Modder's work is never done!
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Old 05-12-2015, 09:54 PM   #5
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Posts: 70
It should run both. Put your fridge and water heater on propane, and it should be good to go.
2015 GMC 2500HD Duramax Denali
2015 XLR 300X12HP
2013 Polaris RZR 900 XP
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generator, xlr

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