GFCI Keeps Tripping After Reset

Quick answer

Turn off the power, unplug devices, and reset the GFCI. If it trips again, check for water or a faulty appliance. Replace the GFCI if the problem persists.

Confirm the symptom

• GFCI outlet trips immediately after reset
• Multiple resets don't hold
• Other outlets on the same circuit also trip
• Tripping happens even with no devices plugged in

Tools and prep

• Non-contact voltage tester
• Multimeter
• Screwdriver set
• Wire stripper
• Infrared thermometer
• Shop vacuum or soft brush

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Prep & safety

• Turn off the main power to the GFCI outlet at the circuit breaker.
• Unplug all devices connected to the GFCI and downstream outlets.
• Wear rubber-soled shoes and use insulated tools to avoid electric shock.

Step-by-step troubleshooting

1. Step 1: Reset the GFCI
   Do: Press the reset button on the GFCI outlet until it clicks.
   Observe: The outlet should power on and stay on.
   Means: The GFCI is functioning normally.
   Next: Move to Step 2.
2. Step 2: Test for Tripping
   Do: Plug in a device and turn it on.
   Observe: The GFCI trips immediately.
   Means: There is a fault in the circuit or device.
   Next: Move to Step 3.
3. Step 3: Check for Moisture
   Do: Inspect the outlet and surrounding area for signs of water or dampness.
   Observe: Water or condensation is present.
   Means: Moisture is causing the GFCI to trip.
   Next: Dry the area and move to Step 4.
4. Step 4: Test Devices
   Do: Plug in one device at a time to identify the faulty one.
   Observe: The GFCI trips when a specific device is plugged in.
   Means: The device has a ground fault.
   Next: Replace or repair the faulty device.
5. Step 5: Check for Overloaded Circuit
   Do: Use a multimeter to measure the current draw of devices on the circuit.
   Observe: The total current exceeds the GFCI's rating (usually 15-20 amps).
   Means: The circuit is overloaded.
   Next: Reduce the load or redistribute it to another circuit.
6. Step 6: Inspect Wiring
   Do: Turn off the power and open the outlet box to check for loose or damaged wires.
   Observe: Loose connections or damaged insulation are found.
   Means: Wiring issues are causing the trip.
   Next: Tighten or replace the wiring.
7. Step 7: Test the GFCI
   Do: Use a multimeter to test the continuity and resistance of the GFCI outlet.
   Observe: The GFCI shows no continuity or abnormal resistance.
   Means: The GFCI is faulty and needs replacement.
   Next: Replace the GFCI outlet.

Common causes

Parts you might need

When replacing a GFCI outlet, match these specifications:

• GFCI outlet: match voltage (120V) and amperage (15A or 20A) to the circuit
• Wire gauge: match the size of existing wires (usually 14 AWG or 12 AWG)
• Mounting box: ensure it fits the existing electrical box size and depth

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Check the label on the old GFCI outlet for exact specifications before purchasing a replacement.

When to call a professional

• The GFCI trips immediately after replacement with no devices plugged in.
• You find damaged wiring or a ground fault you can't fix yourself.
• You're unsure about the circuit's wiring or electrical system.
• The problem affects multiple circuits or the main panel.

FAQ

Related guides

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