Why Your Garbage Disposal Trips the Breaker and How to Resolve It

If your garbage disposal repeatedly trips the circuit breaker, it’s more than just inconvenient—it’s a sign of an underlying problem. Fortunately, this issue often has straightforward solutions. Here’s a breakdown of potential causes and how to address them so you can restore your disposal to working order.

Why Does a Garbage Disposal Trip the Circuit Breaker?

Understanding the cause is the first step to fixing the problem. Here are some common reasons why your garbage disposal might be overloading the circuit:

1. Jammed Blades

Certain food scraps, like potato skins, corn husks, or fibrous artichoke leaves, can get stuck and jam the grinding mechanism. When the blades are blocked, the motor works harder to break through the obstruction, which can overload the circuit and trip the breaker.

2. Motor Overload

Running the garbage disposal too long or overloading it with food can cause the motor to overheat. When this happens, the circuit breaker trips as a safety measure to prevent damage.

3. Worn-Out Motor

Over time, the motor in your garbage disposal can wear down. An aging motor may struggle to function properly and could frequently trip the breaker when it attempts to run.

4. Faulty Wiring

Electrical issues, such as loose connections or damaged wires, can lead to a breaker trip. Faulty wiring often triggers the breaker to prevent potential electrical hazards.

5. Clogs

When your garbage disposal is clogged, the motor must work harder to function. This increased demand for power can cause the breaker to trip as the motor strains under the extra load.

Choosing the Right Circuit for Your Garbage Disposal

Having the correct electrical setup is essential for proper garbage disposal operation. Consider these factors:

• Dedicated Circuit: A garbage disposal should have its own circuit to avoid overloading the electrical system. Sharing the circuit with other appliances can increase the likelihood of breaker trips.
• Appropriate Circuit Breaker: Match the circuit breaker’s amperage to the disposal’s requirements. Most disposals need a 15- to 20-amp breaker for optimal operation.
• Ground Fault Circuit Interrupters (GFCIs): While not always required, GFCIs add an extra layer of safety by shutting off power in case of electrical faults.

Signs Your Garbage Disposal May Need Replacement

Sometimes repairs aren’t enough, and a replacement is the best option. Look for these indicators:

• Frequent Breaker Trips: If the breaker trips even with light use or without a load, the motor may be beyond repair.
• Loud Grinding or Rattling Noises: Unusual noises that persist despite cleaning or maintenance suggest mechanical issues.
• Persistent Leaks: If the disposal leaks from multiple locations, the seals or casing may be too damaged for effective repair.
• Loss of Efficiency: When the unit struggles to grind food properly, it might be time to upgrade to a newer model.

Read more: Common Mistakes That Dull Garbage Disposal Blades

How to Fix a Garbage Disposal That Trips the Circuit Breaker

Here are the steps to troubleshoot and resolve common issues with your garbage disposal.

Reset the Garbage Disposal

1. Locate the reset button on the bottom or side of the unit (usually red or black).
2. Press and hold the button for a few seconds, then release it.
3. Turn on the cold water and switch on the disposal to check if it works properly.

Check for Jams in the Blades

1. Unplug the disposal or switch off the breaker for safety.
2. Find the hex-shaped hole in the center underneath the unit.
3. Insert a 1/4-inch Allen wrench into the hole and wiggle it back and forth to free any obstructions.
4. Use tongs or pliers from the top to remove debris—never use your hands.
5. Reconnect the power or turn on the breaker, run cold water, and test the disposal.

Test the Outlet

1. Plug a different device, such as a lamp, into the outlet.
2. If the device doesn’t work, check for and reset any tripped breakers.
3. If the outlet is still not functional, call an electrician for assistance.

Inspect the Wiring

1. Unplug the disposal or switch off the breaker.
2. Remove the cover plate at the bottom of the unit to access the wiring.
3. Look for loose connections, burnt wires, or anything unusual.
4. Tighten any loose wires or connections. Replace damaged or burnt wires as needed.
5. Reattach the cover, restore power, and test the disposal.

Perform Preventive Maintenance

1. Pour half a cup of baking soda into the disposal, followed by a cup of vinegar.
2. Let the mixture bubble for a few minutes, then rinse with hot water.
3. Always use cold water while the disposal is operating to solidify grease and oils, making them easier to grind.
4. Avoid placing fibrous materials, grease, or hard items like bones in the disposal to prevent future problems.

How to Maintain Your Garbage Disposal

Proper maintenance can significantly extend the life of your garbage disposal and prevent circuit breaker trips. Follow these guidelines for regular care:

• Clean the Disposal Regularly: Use a mixture of ice cubes and coarse salt to remove buildup on the grinding elements. Rinse thoroughly with cold water.
• Run Water Before and After Use: Running cold water for a few seconds before and after using the disposal helps flush out food debris and keeps the system clean.
• Avoid Grinding Problematic Foods: Stay away from fibrous, starchy, or hard materials like corn husks, coffee grounds, and bones, as these can cause clogs and jams.
• Inspect the Unit Periodically: Check for signs of wear, leaks, or unusual noises that might indicate an issue with the motor or components.

Read more: How To Quickly And Easily Unclog Your Kitchen Double Sink With A Garbage Disposal

What to Remember

When your garbage disposal trips the breaker, it signals a problem that needs fixing. It might be jammed blades, an overworked motor, or a wiring issue. These problems don’t have to be overwhelming, you can usually handle them with a few straightforward steps. Ignoring the issue, however, could lead to bigger electrical or safety concerns.

Take a moment to inspect the blades or check the wiring for anything out of place. If the unit seems beyond repair, it might be time for an upgrade. Regular maintenance can help you avoid this hassle in the future. Keep your disposal in good shape by staying ahead of potential problems before they grow into costly repairs.