An electrical outlet goes dead when the continuous path of electrical current is interrupted by a safety mechanism or a hardware failure. Common culprits include a tripped Ground Fault Circuit Interrupter (GFCI) receptacle that cuts power to protect against shocks, a tripped household circuit breaker due to an overloaded circuit, or a loose wire that has detached from a side terminal screw inside the wall box. You can troubleshoot power loss safely using a non-contact voltage tester. You can verify that your corrective action is successful when locating the upstream GFCI, resetting the tripped breaker, or tightening loose terminal wiring restores full electrical voltage to the dead outlet.
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