GFI Outlet Sparking

Quick answer

Turn off the power at the circuit breaker immediately. Inspect the outlet for visible damage or loose wires. If the outlet is faulty, replace it with a new GFCI outlet, ensuring all connections are secure.

Confirm the symptom

• Sparking from the GFI outlet when plugged in or turned on
• Frequent tripping of the GFI outlet
• Warm or discolored outlet faceplate
• Burning smell coming from the outlet
• Visible damage to the outlet or surrounding area

Tools and prep

• Voltage tester
• Screwdriver set
• Wire stripper
• Needle-nose pliers
• Infrared thermometer
• Multimeter
• Safety gloves
• Flashlight

Disclosure: We may earn a commission from qualifying purchases via affiliate links. Learn more.

Prep & safety

• Turn off the power to the outlet at the circuit breaker.
• Verify the power is off using a voltage tester.
• Work in a dry area to prevent electrical hazards.
• Wear safety gloves for added protection.

Step-by-step troubleshooting

1. Turn Off Power
   Do: Locate the circuit breaker for the GFI outlet and turn it to the 'Off' position.
   Observe: The outlet should no longer be energized.
   Means: Power is safely disconnected.
   Next: Test the outlet with a voltage tester.
2. Test for Power
   Do: Use a voltage tester near the outlet to ensure no electricity is present.
   Observe: The voltage tester should not light up or beep.
   Means: The power is successfully turned off.
   Next: Remove the outlet cover and inspect the outlet.
3. Inspect the Outlet
   Do: Remove the outlet cover and examine the outlet for signs of damage, discoloration, or loose wires.
   Observe: You may notice burned areas, loose connections, or physical damage.
   Means: Visible issues can indicate the cause of sparking.
   Next: Check the wiring connections.
4. Check Wiring Connections
   Do: Use a screwdriver to carefully check the wiring connections. Ensure all wires are securely attached to the outlet.
   Observe: Loose or damaged wires may be identified.
   Means: Loose connections can cause sparking.
   Next: Test the outlet with a multimeter.
5. Test the Outlet
   Do: Use a multimeter to test the outlet for continuity and proper voltage.
   Observe: The multimeter should show correct readings if the outlet is functioning properly.
   Means: Abnormal readings may indicate a faulty outlet.
   Next: Replace the outlet if necessary.
6. Replace the Outlet
   Do: If the outlet is faulty, turn off the power and replace it with a new GFCI outlet, following the manufacturer's instructions.
   Observe: The new outlet should function without sparking.
   Means: The issue is resolved with a new outlet.
   Next: Restore power and test the outlet.
7. Restore Power and Test
   Do: Turn the circuit breaker back to the 'On' position and test the outlet with a small appliance.
   Observe: The outlet should operate normally without sparking.
   Means: The repair was successful.
   Next: Monitor the outlet for any further issues.

Common causes

Parts you might need

When replacing a GFCI outlet, ensure the new part matches the old one in specifications and size.

• GFCI outlet: match the amperage and voltage rating (usually 15A or 20A, 120V)
• Wire connectors: match the wire gauge and number of wires to connect
• Outlet faceplate: match the size and style of the existing faceplate
• Circuit breaker: match the amperage if replacing the circuit breaker as well

Disclosure: We may earn a commission from qualifying purchases via affiliate links. Learn more.

Check the manufacturer's label on the old outlet for specific model numbers and specifications.

When to call a professional

• Sparking continues after replacing the outlet
• You detect a strong burning smell or smoke
• The circuit breaker continues to trip frequently
• You are unsure about the electrical system or wiring
• The outlet is in a high-risk area such as a bathroom or kitchen

FAQ