Sparks coming from a wall electrical outlet are typically caused by short circuits, loose terminal wire connections, or normal micro-arcing. When you plug in a high-draw appliance, a tiny spark can momentarily occur as current bridges the internal contact gap. However, large or persistent sparks usually indicate loose terminal screws creating high resistance, frayed appliance cords, or moisture ingress inside the junction box bridging hot and neutral contacts. You can troubleshoot electrical faults safely by shutting off the breaker. You can verify that your corrective action is successful when tightening loose terminal wires, replacing damaged appliance cords, or installing a new receptacle stops abnormal sparking completely.
1 votes
Marked as accepted