An electrical outlet can go completely dead due to several common electrical faults within the branch circuit. The most frequent causes include a tripped Ground Fault Circuit Interrupter (GFCI) safety receptacle located upstream in a kitchen or bathroom, a tripped circuit breaker switch at the main electrical service panel, or a loose terminal wire connection inside the electrical box. Because household circuits daisy-chain power from one receptacle to the next, a single detached wire can cut off electricity to all downstream outlets. You can troubleshoot dead outlets safely using a non-contact voltage tester. You can verify that your corrective action is successful when resetting a tripped GFCI, flipping the breaker, or securing loose terminal screws restores normal voltage output.
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