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Old 08-20-2017, 08:20 AM   #1
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AC is tripping the breaker when on Generator

Hello All,

Looking for some advice- just went thru and replaced a bunch of parts on the generator in my Fleetwood Tioga. The AC runs and works Ok when plugged into 30 amp service at the RV park, but when trying to travel and run AC to keep the cabin cool - either the AC breaker in the RV or the breaker on the generator itself. The generator keeps running but no power. Has anyone had this issue?

I assume this is because the generator is not generating enough power. Is this something that I can fix myself, or should I make a appointment at Cummings?

Generator is a micro quiet 4000
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Old 08-20-2017, 08:40 AM   #2
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I would check electrical connections at your generator.
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Old 08-20-2017, 08:42 AM   #3
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And your transfer switch. Sounds like your a/c is drawing high amperage, which could mean loose connection
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Old 08-20-2017, 06:07 PM   #4
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AC is tripping the breaker when on Generator

Not knowing what parts you replaced.
Have you tested voltage and frequency from the generator? If not, I would start there. Easy to do with P3 P4400 Kill A Watt Electricity Usage Monitor. Cost $19 on amazon.
The repair or tech manual for your generator will tell you what the voltage and frequency should be and how to adjust.
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Old 08-20-2017, 08:26 PM   #5
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If your generator isn't putting out the correct voltage, the amps will go up causing the tripped breaker. You need to be sure your generator is putting out the correct voltage and HRZ, or you will be damaging your electronics.
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Old 08-21-2017, 05:38 AM   #6
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Originally Posted by travelingcat View Post
Not knowing what parts you replaced.
Have you tested voltage and frequency from the generator? If not, I would start there. Easy to do with P3 P4400 Kill A Watt Electricity Usage Monitor. Cost $19 on amazon.
The repair or tech manual for your generator will tell you what the voltage and frequency should be and how to adjust.
Sorry- basic tune up parts... fuel filter, dual pump, selonid, air filter, starter, spark plug, and changed oil...
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Old 08-23-2017, 03:07 PM   #7
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Originally Posted by travelingcat View Post
Not knowing what parts you replaced.
Have you tested voltage and frequency from the generator? If not, I would start there. Easy to do with P3 P4400 Kill A Watt Electricity Usage Monitor. Cost $19 on amazon.
The repair or tech manual for your generator will tell you what the voltage and frequency should be and how to adjust.
I received the P4400 today - so what are you recommending I do wit it? Just hook up to one of my inside outlets?
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Old 08-23-2017, 03:33 PM   #8
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Yes, plug it in and start the generator. Once it transfers, you should see volts and cycles or HZs.

If it looks OK, 120ish volts and near 60 HZs, load it up with the air conditioner. It should hold the same volts and HZs, give or take a few.

If it drops below 106 volts, you have a generator engine problem.

If the generator holds volts and HZs, dog bone the meter to the shore cord and plug it into a kitchen or dinning room 20 amp outlet. Then you can read the amp draw of the AC unit running. Make sure other items are off.
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