dishwasher tripping dedicated circuit but not others...
#1
02-18-14, 07:41 AM
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dishwasher tripping dedicated circuit but not others...
In the process of a kitchen remodel. I have a dedicated 20 amp circuit for the dishwasher and a dedicated 20 amp circuit for the garbage disposal, both under my sink. They are protected by AFCI breakers. I plugged in our (6 year old) dishwasher that had been sitting outside for a while to its circuit and as soon as it started it tripped the circuit. Tried again and same thing. I plugged it into the garbage disposal's circuit and the same thing happened. I then took an extension cord and plugged the dishwasher into one of the kitchen small appliance circuits (20 amp, GFCI breaker) and it works fine.
I plugged a shop vac into the dishwasher circuit and it worked fine, as did the garbage disposal on both circuits.
I then swapped out the AFCI breaker on the dishwasher circuit with a GFCI thinking that was the problem and the same thing kept happening.
Any idea whats going on and/or how I should proceed figuring this out?
I plugged a shop vac into the dishwasher circuit and it worked fine, as did the garbage disposal on both circuits.
I then swapped out the AFCI breaker on the dishwasher circuit with a GFCI thinking that was the problem and the same thing kept happening.
Any idea whats going on and/or how I should proceed figuring this out?
#2
02-18-14, 07:54 AM
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Dish Washer
I plugged in our (6 year old) dishwasher that had been sitting outside for a while
#3
02-18-14, 07:57 AM
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This is just a guess, but I believe the AFCI breaker is seeing some arcing at the motor switch. I don't believe either the disposer or dishwasher are required to be on a AFCI circuit, I'd change them both to regular breakers.
#4
02-18-14, 06:46 PM
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ultimately I will put it on a regular breaker if I have to. I am just curious why it would be tripping the GFCI as well on its own circuit, but runs on the small appliance GFCI circuit.
#5
02-18-14, 10:51 PM
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If it trips one GFCI it should trip the other one.
A typical problem that would cause a GFI to trip with a dishwasher is a defective heating element. It would be a good idea to check the element with an ohmmeter before putting the dishwasher on a regular circuit. You would need to disconnect the wires to the heating element and check from the terminals to ground. No continuity should be seen.
A typical problem that would cause a GFI to trip with a dishwasher is a defective heating element. It would be a good idea to check the element with an ohmmeter before putting the dishwasher on a regular circuit. You would need to disconnect the wires to the heating element and check from the terminals to ground. No continuity should be seen.
