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Old 06-12-2012, 01:36 AM   #1
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Load Center

I recently bought a 2003 Rampage Model 377. Can somebody tell me if there is a switch for the big A?C unit when plugged into shore power?
All lights and 110 circuits work when plugged in but bid=g A/C in the back only runs when generator is running.
Thanks
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Old 06-12-2012, 08:43 AM   #2
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That's a tough one. Normal wiring diagram should show both the generator and the shore power line connected only to the load center. So the AC should work regardless of whether the power source was generator or power line.

Do you have two ACs, and one works but the other doesn't when connected to shore power? If that's the case, then shore power must be a properly wired 50-amp plug in order for both ACs to run at the same time. With a 30-amp plug, only one AC will work.

Keep us informed as you figure it out.
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Old 06-13-2012, 12:32 AM   #3
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I do have two A/C units. The smaller one does work with the shore power. The power plug however for shore power is a 30 amp plug.
I have looked at the wiring coming out of the Onan 5500 and it is hard-wired to a jbox. I dont find any switches in the generator compartment. I'm hoping there is one somewhere inside the coach.
Thanks
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Old 06-13-2012, 09:03 AM   #4
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Quote:
Originally Posted by VegasHotwhee View Post
The power plug however for shore power is a 30 amp plug.
I suspect your RV came from the factory with 50-amp service and someone messed with it and replaced the 50-amp wiring and plug with the much-cheaper 30-amp plug. Do you have the Owner's Guide that includes a wiring diagram for the RV?
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