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Old 08-19-2016, 09:32 PM   #1
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Microwave throwing the breaker

My microwave has started throwing the breaker when I use it. Could I have an issue with the microwave, or is it possible to have a breaker that needs replacing?


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Old 08-20-2016, 07:15 AM   #2
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Is it on 15amp or 20 amp breaker? I assume you don't have an amp meter so you could take it out and plug it in to a circuit in your house with same size breaker. Only a few screws in the front and slides out. Then at least you have it narrowed down between microwave and camper circuit. Then if all OK with house test check connections (are there other outlets on that circuit?) And then you could try new breaker.
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Old 08-20-2016, 07:22 AM   #3
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quick question does it trip the breaker as soon as you try to use it or does it operate for a short time then trip the breaker? If it trips right away I would assume its the microwave if it takes awhile it may be the breaker. Make sure the wire leading to the breaker is tight in the breaker (turn power off). (I hate auto spell correct)
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Old 08-20-2016, 07:33 AM   #4
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Larry, if I recall correctly, didn't you just replace the electric element in your water heater also? I never asked in that thread, but what wattage element did you put in at that time?

Are you tripping a 15 amp circuit breaker inside the RV, or possibly the 30 amp main breaker either inside your RV or on the campground pedestal?

If a main breaker, then it's possible you are just overloading the circuits with the electric water heater, microwave, air/conditioner, etc.... all being on at the same time....especially if using a 30 amp power supply.

I usually have to turn off the air conditioner in my trailer if I use the microwave at the same time, in the summer.

Good reading here:

Basic RV Electricity - RV Information (RV Maintenance)

RV Converters and Amp Draw - RV Information (RV Maintenance)
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Old 08-20-2016, 03:02 PM   #5
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Breaker Tripping

I have learned which appliances in my RV draw the most power and minimize their joint use. I turned off the water heater breaker in the RV breaker box because I don't need hot water during the summer. I heat water in the microwave as needed. I, too, turn off the A/C while using the microwave. I minimize the use of lights and unplug small appliances when not in use. My refrigerator is the only appliance that is continually powered. I set the A/C to 68 degrees to cool my RV. I then turn the A/C off and use a WindMachine floor fan to circulate air. I turn on the A/C when the RV inside temperature becomes uncomfortable and repeat the process. This saves energy, the breakers don't trip, and all is good. I, too, am spoiled by A/C and often wonder how my ancestors tolerated the Texas heat and humidity. Happy motoring.
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Old 08-20-2016, 03:19 PM   #6
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Unhappy Overload...

If you have the A/C on plus the water heater on and on electric plus do you have your TV on ? What about the refrigerator is it on electric ? The microwave sends the whole camper into overload....
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Old 08-21-2016, 10:41 AM   #7
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Limit the loads

Quote:
Originally Posted by wmtire View Post
Larry, if I recall correctly, didn't you just replace the electric element in your water heater also? I never asked in that thread, but what wattage element did you put in at that time?

Are you tripping a 15 amp circuit breaker inside the RV, or possibly the 30 amp main breaker either inside your RV or on the campground pedestal?

If a main breaker, then it's possible you are just overloading the circuits with the electric water heater, microwave, air/conditioner, etc.... all being on at the same time....especially if using a 30 amp power supply.

I usually have to turn off the air conditioner in my trailer if I use the microwave at the same time, in the summer.

Good reading here:

Basic RV Electricity - RV Information (RV Maintenance)

RV Converters and Amp Draw - RV Information (RV Maintenance)
Ditto regarding use with other loads. If I'm going to run the microwave I turn off the air conditioner until the microwave is finished.
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Old 08-21-2016, 10:50 AM   #8
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Sorry it took so long to answer everyone. We are back home, and the RV is at the park. It'll be awhile before I get back to the camp and can respond to many of the comments.
We are on 50 amp.
There are 2 a/c's running, so overload may be the problem.
I can't recall the power of the changed water heater element, but it was bought at an RV store and they said it is standard.
It usually throws the breaker after the microwave has been running for awhile.
I am buying a meter to test things.
Thanks for the many responses! I'll update in a week or so once we get back to the campground.


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Old 08-21-2016, 11:01 AM   #9
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Quote:
Originally Posted by Larry Tiner View Post
Sorry it took so long to answer everyone. We are back home, and the RV is at the park. It'll be awhile before I get back to the camp and can respond to many of the comments.
We are on 50 amp.
There are 2 a/c's running, so overload may be the problem.
I can't recall the power of the changed water heater element, but it was bought at an RV store and they said it is standard.
It usually throws the breaker after the microwave has been running for awhile.
I am buying a meter to test things.
Thanks for the many responses! I'll update in a week or so once we get back to the campground.


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On 50 amp, you really shouldn't be having a problem. WHAT breaker is it that is tripping?
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Old 08-21-2016, 11:20 AM   #10
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It is the 15 amp in the indoor breaker box labeled microwave.


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