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Old 05-27-2010, 12:31 AM   #1
LGMI_Camping
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Turned on my A/C for the first time this year and the 20 amp breaker has popped twice in the last 3 days. it has been 87-90 here in Michigan, so it has been getting a workout.

After resetting the breaker, it runs just fine for a day.

Any ideas? Would the breaker be bad? Would the startup capacitor be going bad? Or is it just letting me know it has been a while since it was used?

Thks!
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Old 05-27-2010, 12:54 AM   #2
scott
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Once a breaker pops a couple of times I believe it begins to get weak. It sounds like the start up load combined with the weak breaker is the problem. Are they still using single pole double's on todays new rigs? Mine had 30amp main and the 20amp AC all on one single pole breaker which is a terrible idea. I would replace the breaker to see if that solves it, if it doesn't and you have the double breakers I would see about separating the A/C to a breaker on it's own.
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Old 05-27-2010, 01:54 AM   #3
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Is there anything else on when the AC breaker trips (ie microwave, water heater on electric) that could be overloading the 20amp breaker? Your trailer is an 09 so if it is just the AC tripping the 20 amp breaker I would have the dealer check it out under the warranty. On our old 05 CruiserI moved the AC unit to its own 20 amp breaker because we had this same issue and never had the problem again once I isolated the AC on it's own breaker. I don't know if the new units come like that from the factory or even have room in the breaker box to add another breaker.
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Old 05-27-2010, 03:12 AM   #4
fhenn
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On our cruiser an 2008 the ac was hooked up to the hot water heart. Gave the Ac its own breaker that part has worked well since

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Old 05-27-2010, 09:37 AM   #5
seabee
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If the Main and A/C are together [a double breaker], move the A/C to another breaker.

there should be room to install another breaker.

There is heat transfer in the double breaker, which will ultimately cause it to fail.

What you are describing is similiar to what happened to me and finally the main stopped working.
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Old 05-27-2010, 10:14 AM   #6
KennyB
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Hunter11, my new 30SK looks like it has two vacant breaker slots but when I asked the dealer service tech if I could add more he said no. I haven't dug into it further but after all the conversation I think I will. Maybe he was concerned that I was going to add more breakers to add another appliance or something and that would overload the main.

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Old 05-27-2010, 10:20 AM   #7
dalemac377
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Go ahead and add the new breaker as Hunter and others have said. You are not increasing the total electrical load, so it won't hurt anything. Those double breakers can be a real problem if both poles have high loads. I did this in our '07 and everything was fine.
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Old 05-27-2010, 11:41 AM   #8
Hunter11
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I used Square D breakers on the Cruiser and bought them at Home Depot. If you get that AC on it's own 20 amp breaker it should solve your problem.
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Old 05-27-2010, 02:11 PM   #9
Robbie Ribbins
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Feel of the breaker while A/C is running and see if it is warm. It should not be warm, which means the breaker is going bad if warm.....good luck
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Old 05-28-2010, 02:03 AM   #10
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If you don't have room to add more breakers, you might be able to find a 30/15 to replace the 30/20 main the A/Cis hooked to. Then you can buy a single 20, move the A/C to the single 20 then move one of the 15amp circuits over to the 15 amp side of the new 30/15 main. Does that make sense?

Better yet, they shouldn't put the a/c and main together at the factory.
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