When I turn on the microwave it trips the breaker?
Rachel Ross
Published Feb 09, 2026
When I turn on the microwave it trips the breaker?
The answer: The microwave is overloading the electrical circuit. In other words, the circuit is rated to handle a certain amount of amps (unit of electrical current), and the microwave is exceeding that amount, causing the breaker to trip.
Does my microwave need a dedicated circuit?
The microwave oven needs a dedicated 20-amp, the 120/125-volt circuit to feed it. This will require 12/2 NM wire with a ground. Although it’s not uncommon to see microwave ovens plugged into standard appliance outlets, larger microwave ovens can draw as much as 1500 watts, and these need their own dedicated circuits.
Does microwave lost power?
Microwave ovens lose power over time due to the weakening of magnetron tubes. These tubes diminish in electrical strength, thus diminishing the efficiency of your microwave.
Can you plug a microwave and a refrigerator on the same circuit?
You can’t power a refrigerator and microwave on the same circuit. Other kitchen appliances must also be on dedicated circuits, including the garbage disposal, dishwasher, freezer and electric range.
What can cause microwave to trip breaker?
Your Microwave Is Tripping Breaker On Startup
- There is an issue with the electricity supply to the appliance.
- The turntable motor is wet.
- The interference suppressor has blown.
- The door safety latch is broken.
- The magnetron has an electrical leak.
- The capacitor is faulty.
- The high voltage diode is short-circuiting.
What to do when your microwave has lost power?
Otherwise, unplug the microwave from the wall outlet. This prevents a power surge from damaging the magnetron tube when the power is restored. Turn on the circuit breaker or plug the microwave into the outlet only when you are sure that the power is permanently restored. If there are still storms in the area, the power may be disrupted again.
How do you fix a halogen light in a microwave?
To check whether this is the problem and to solve it, you need to first unplug the microwave and then shut off the power to the microwave at the breaker point itself. Check your microwave to locate the vent and remove its panel by unscrewing the screws. Find the box containing the halogen light and remove its cover.
How long does it take to reset a microwave after a power outage?
Resetting a microwave after a power outage also includes resetting the clock. There are no tools required to perform this task and it is completed in less than 5 minutes. It is important to protect the magnetron tube in a microwave after a power outage.
What causes a microwave to have no heat?
Often reduced heat or no heat at all is caused by a failing magnetron, which is a tube that is part of the microwave’s high-voltage system. If you are unable to adjust the power level, the problem may be within the circuit board. Always On.
Otherwise, unplug the microwave from the wall outlet. This prevents a power surge from damaging the magnetron tube when the power is restored. Turn on the circuit breaker or plug the microwave into the outlet only when you are sure that the power is permanently restored. If there are still storms in the area, the power may be disrupted again.
Why does my microwave turn off after a few seconds?
Here is what happens frequently with a microwave oven that turns off after a few seconds: You put a cup of water in your microwave, press ONE MINUTE, and the microwave runs for 2 or 3 seconds and shuts off or resets itself. Almost like when you first plug it in, all lights on the digital display come on and then it asks you to enter in the time.
Resetting a microwave after a power outage also includes resetting the clock. There are no tools required to perform this task and it is completed in less than 5 minutes. It is important to protect the magnetron tube in a microwave after a power outage.
Why does my microwave keep Tripping the breaker?
Microwaves use a lot of power, and so the circuit must be overloaded when you use it. If it is tripping the breaker, there is nothing scarey about this. This is what breakers are supposed to do when there is an overload.