When a Ground Fault Circuit Interrupter (GFCI) safety outlet produces sparks, it indicates a short circuit, an internal component malfunction, or loose terminal wiring behind the faceplate. Because GFCI receptacles contain sensitive electronic circuitry and differential current sensors, water contamination, moisture ingress in damp locations like kitchens or bathrooms, or a worn-out mechanical relay can trigger internal arcing. You can troubleshoot electrical faults safely by shutting off the main breaker. You can verify that your corrective action is successful when turning off power, drying any internal moisture completely, and replacing a faulty GFCI receptacle ensures that plugging appliances in no longer causes abnormal sparking or trips the internal sensor.
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