My Microwave is Tripping The Breaker – Why?

When microwave ovens first hit the market in the 1970s, they revolutionized kitchens all over the country. These technological marvels have come a long way since then, with more features, a smaller footprint, and more cooking power than ever before. Greater power means more energy consumption, but if your microwave is tripping the breaker in your house, it’s a sign that it’s overloading the circuit. The questions are: why is this happening, and what can be done to fix it?



When an appliance, such as a microwave oven, trips the circuit breaker repeatedly, it is overloading the electrical circuit, which is only rated for a certain number of amps. When the microwave reaches that threshold, the breaker trips and the power is turned off. One of two issues must be present in order for this type of reaction to occur:


  • An overload occurs when too many items are plugged into the same circuit as the microwave oven.
  • The microwave oven is broken and consuming an excessive amount of power.

There are a few simple steps to determining the exact cause of the problem:


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


A dedicated circuit helps to protect your home and electronics by serving only one appliance. You run the risk of overloading a circuit and tripping the breaker if you have more than one major appliance on it. Tripping the breaker repeatedly can cause it to break down, and if it fails to trip, the overloaded circuit could cause the wiring to overheat, putting your home at risk of an electrical fire.


To avoid an overload, a microwave oven requires its own 20 amp circuit. The tripped breaker should be labeled with the word “microwave” if it has a dedicated circuit; if not, it’s most likely a shared circuit. Whether or not your microwave oven is on a dedicated circuit, it’s a good idea to proceed to the next step to ensure it’s working properly.


Test the microwave to determine if it’s defective. 

Plug the unit into a different outlet, such as a garage or workshop, where the breaker has a higher amperage, or into an outlet with a guaranteed dedicated circuit. If the appliance trips the breaker, the issue is most likely with the microwave, which you’ll need to repair or replace.


If the microwave oven does not trip the circuit breaker, you will need to install a dedicated circuit to avoid further problems.


The key to your satisfaction and the safety of your home and family is to hire the right company to perform electrical work in your home. Hoffman Electrical & A/fully C’s certified, licensed, and experienced electricians are committed to providing quality, professional service, and you can expect:


  • Service is available 24 hours a day, 7 days a week, 365 days
  • Estimates are provided without charge.
  • Pricing that is clear and upfront.
  • Licensed electricians with over 10 years of experience.


If you feel overwhelmed and need microwave oven repair service, give us a call.


Smart Living Home Repair Services

244 Madison Avenue , #1019

New York, NY 10016

(888) 758-9103

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