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Old 07-13-2012, 03:31 PM   #1
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Can I run both A/C's on my Generator?

I have an Onan 5500 generator and would like to know if I can run both of my roof top A/C units at the same time. 2003 National Seabreeze LX. I don't want to just put them both on and wait for something to trip.
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Old 07-13-2012, 03:39 PM   #2
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Yes, one way to make sure try it.
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Old 07-13-2012, 03:48 PM   #3
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Quote:
Originally Posted by Kliwks View Post
I don't want to just put them both on and wait for something to trip.
Why not? You won't hurt anything.

5,500 watts is approx 45 amps so it should run both with no trouble.

30 amps is 3,600 watts.
A PROPERLY wired 50 amp RV circuit is 12,000 watts.
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Old 07-13-2012, 04:01 PM   #4
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5500 watts should be more than enough to run both ACs simultaneously. If you have some other significant load running (water heater, range, microwave for example) and both ACs try to start at the same time that would likely trip a breaker but as has already been pointed out, so what? That's what circuit protection is for. If it only trips occasionally then no big problem. If it trips regularly then you should figure out why.
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Old 07-13-2012, 04:02 PM   #5
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Thanks Mr D. You have been RV'ing since 1957. You should know.
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Old 07-13-2012, 04:03 PM   #6
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Would it trip the breakers on the Generator or in the breaker panel?
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Old 07-13-2012, 04:13 PM   #7
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Would it trip the breakers on the Generator or in the breaker panel?
Probably the generator.
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Old 07-13-2012, 06:12 PM   #8
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I just ran both A/c's for an hour on the genny. No problems.

Thanks for the replies.
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