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Repair and disassembly guides for GE Microwave ovens.

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What causes my GE microwave to trip the breaker

What causes my GE microwave to trip the breaker when I depress the start button.

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REASONS WHY YOUR MICROWAVE IS TRIPPING YOUR BREAKER

When an appliance such as a microwave oven repeatedly trips the circuit breaker, it’s overloading the electrical circuit, which is rated to handle a finite number of amps. Once the microwave exceeds that number the breaker is tripped and the electrical flow is shut off. In order for this type of reaction to occur, there must be one of two issues at hand:

  • Too many items are plugged in to the same circuit that the microwave oven is on, causing an overload.
  • The microwave oven is defective, and drawing an excessive amount of electricity.

Determining the exact cause of the problem involves a few simple steps:

Check to see if the microwave has its own dedicated circuit.

A dedicated circuit is one which serves only one appliance, helping to protect your home and electronics. By having more than one major appliance on a circuit, you run the risk of overloading the circuit, and tripping the breaker. Repeatedly tripping the breaker can cause it to deteriorate, and if it should fail to trip, the overloaded circuit may cause wiring to overheat, placing your home at risk from an electrical fire.

A microwave oven needs its own 20 amp circuit, in order to prevent an overload. If it has a dedicated circuit, the tripped breaker should be labelled with the word “microwave”—if not, it’s likely a shared circuit. Regardless of whether your microwave oven is on a dedicated circuit, it’s a good idea to move on to the next step, to ensure the appliance is operating correctly.

Test the microwave to determine if it’s defective.

Plug the unit in to an alternate outlet, in an area of your home where the breaker has a higher amperage, such as in a garage or workshop, or in to a outlet with a guaranteed dedicated circuit. If the appliance trips the breaker, the problem lies with the microwave, and you’ll need to either repair or replace it.

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Here is my question now. How do you repair the microwave? What might it need and can you do it yourself?

@audra2323 Personally I will not work on one of these as i deem them to dangerous, I've been a professional repairman since 1984.

I have my microwave on a 10 amp dedicated breaker for years. All of a sudden it trips the breaker immediately when i start the unit.

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Check if the circuit that the microwave is connected to is also powering other appliances or devices. If it is, the circuit may be overloaded when the microwave starts, causing the breaker to trip. Try unplugging other devices on the same circuit and see if that prevents the issue.

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