Microwave Keeps Tripping Breaker: Causes and Solutions

Imagine you’re trying to heat your yesterday’s lunch and suddenly your microwave tripping the breaker. If you don’t have to imagine, this article is for you. We highly recommend not ignoring this issue, because it can lead to severe electrical hazards. Contact us via (408) 898-1576 or support@fuseservice.com to discover why your microwave keeps tripping breaker and what you can do to prevent this from happening.

Why Does Microwave Keep Tripping the Breaker?

Basically, microwave causing breaker to trip because of various electrical issues like overloads, short circuits, or faulty internal components. Whenever something like this happens in your electrical grid, the breaker trips and cuts off the power to prevent bigger harm. But if it trips when the microwave is on, it’s usually a sign of microwaves malfunctioning. 

The most common reasons a microwave trips breaker include:

• The circuit can’t handle the microwave’s power needs.
• A faulty microwave component, such as the magnetron, capacitor, or wiring.
• A ground fault or short circuit within the microwave or electrical outlet.
• A worn-out or weak circuit breaker unable to handle the load.

Common Causes of a Microwave Tripping the Breaker

1. Overloaded Circuit

Overload circuits are a frequent issue when the microwave breaker keeps tripping. The point is that most circuits can handle about 15-20 amps. It’s enough for small devices like floor lamps and smartphone chargers. On the other hand, some microwaves require a certain 20-amp circuit. The overload occurs when such a device isn’t the only one connected to the circuit (what’s quite frequent for kitchen appliances).  

2. Faulty Microwave Components

If it’s not a circuit then it could be a microwave part which leads to the microwave started tripping breaker. Here is what components can be faulty:

• Magnetron. The high-voltage component responsible for heating food.
• Capacitor. Stores electric charge; a shorted capacitor can trip the breaker.
• Diode. Helps regulate electricity flow; a failing diode can cause excessive power draw.

3. Ground Fault or Short Circuit

A microwave tripping breaker can be a sign of short circuit or ground fault. In simple words, it’s when your electricity finds unintentioned connection which results in a surge. 

4. Faulty Outlet or Wiring

Also keep in mind that the problem might be in the outlet or wiring. When it’s damaged or worn-out it results in inconsistent power supply, triggering the breaker.

5. Weak or Defective Circuit Breaker

The issue might be and on the other end. If your microwave, outlets and circuit are fine, it can be the breaker. If the microwave circuit breaker keeps tripping and you have an old and outdated breaker it can be the root of the problem. 

How to Fix a Microwave That Trips the Breaker

1. Check for Circuit Overload

• Leave just the microwave plugged into a circuit and remove all other devices. Try running the microwave again. 
• If it works fine and the breaker isn’t tripping, get a dedicated outlet. 

2. Inspect the Microwave’s Internal Components

• All microwave parts like magnetron, capacitor, or diode can be tested with a multimeter.
• If some of them don’t perform correctly, leave the replacement to the professional. 

3. Test the Outlet and Wiring

• Plug the microwave into a different outlet. If it still trips, the issue is likely with the microwave.
• If it works fine, you may need an electrician to inspect and repair the original outlet.

4. Replace a Weak or Faulty Circuit Breaker

• If the breaker trips frequently and you know it’s old, replace it with a new one.
• Always consult an electrician before replacing any electrical panel components.

Preventive Measures to Avoid Future Breaker Trips

Don’t wait for problems to come. There are some easy tips how to prevent such issue to arise:

• Use a dedicated circuit. Microwave is a high-voltage device, so a separate circuit will lower the chances of tripping the breaker significantly.
• Don’t plug multiple high-voltage appliances into one outlet. This helps prevent overloading.
• Regularly inspect your microwave and wiring. Check for signs of wear, burns, or loose connections.
• Upgrade your electrical panel. If you frequently experience breaker trips, an electrician can assess if an upgrade is necessary.

Do You Need a New Microwave or an Electrical Repair?

If you tried everything but your microwave keeps tripping breaker, it can be a sign. Probably not ghosts, but that you need an electrician to inspect your home. Also it can mean that you need a new microwave. 

Consider replacing the microwave if:

• The microwave is old (8+ years).
• It frequently overheats or sparks inside.
• Repairs would cost nearly as much as a new unit.

Consider electrical repair if:

• Other appliances also cause the breaker to trip.
• The issue persists even when using a different microwave.
• The electrical panel or wiring shows signs of wear.

When to Call a Professional

If you’ve tried all troubleshooting steps and your microwave breaker keeps tripping, it’s time to seek professional help. An electrician can safely inspect your wiring, breaker panel, and microwave connection to identify the root cause.

Call a professional if:

• You suspect a short circuit or wiring issue.
• The breaker trips even when the microwave is unplugged.
• You’re unsure how to replace electrical components safely.

Don’t risk electrical fires! Call us at (408) 898-1576 or email support@fuseservice.com to to ensure your home remains safe.

Conclusion

By understanding all the possible issues of why would a microwave trip a breaker you can make your kitchen safe from any electrical hazards. Check microwave parts, outlet and wiring, circuit load and breaker itself. Also we highly recommend having an electrician to ensure your home electrical grid is safe from time to time. At Fuse Service we are always eager to help with your electricity.