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Old 12-29-2012, 10:18 PM   #1
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Temporary Power Loss When AC Comes On

I have a 2005 Coachmen Cross Country and the last few days I have been experiencing a temporary power loss to TVs, satellite receivers and the microwave when the AC comes on. The issue occurs with both the rear and front AC. It occurs on generator power and when connected to the shoreline. Once the ACs start up, the aforementioned power back up within a few seconds.

I also noticed that the the amps on the digital read out exceed 50 amps for approx. 1 sec or less and then return to a normal range.

Any ideas or assistance would be appreciated. Checked breakers/fuses and I can't seem to identify the problem. The onset of the problem has been within the last few days.
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Old 12-30-2012, 01:30 AM   #2
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Howdy and welcome to the forum. I can't help with your problem, but hopefully someone will be along soon to assist. Good luck.
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Old 12-30-2012, 08:07 AM   #3
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Sounds like a loose or bad connection somewhere, probably in power feed. Starting AC draws a lot of current overloading the connection causing a voltage loss.

I would start with checking connections on power cable, transfer switch and main breakers. Campground pedestal could also be the problem.
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Old 12-30-2012, 05:08 PM   #4
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I don't know if you posted this elsewhere or not but a suggestion was to make sure all the electrical screws are tight,

Transfer case,
Breaker box

I have even seen loose screws on the shore power cord (Outlet came off in my hand)

Mind you these are problems I have personally seen and I am not a professional RV tech.. That is just my rig or my next site neighbor's. (His was the outlet end, thankfully he was an electrical engineer so between my tool box and his mind all fixed).
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Old 12-31-2012, 07:43 AM   #5
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The above suggestions are right on the money. Also check for a burned prong on your power cord.

Also, most original power cords have a molded-on plug. If the plug on your power cord has ever been replaced, it will likely have screws connecting the wires inside the plug. Check these connections, too.
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Old 12-31-2012, 09:01 AM   #6
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Though the advice on the power cord is good.. Recall it happens when he's running the generator as well.
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