What causes loss of power in an exterior electrical outlet?
What causes loss of power in an exterior electrical outlet? Loss of Power in an Exterior Electrical Outlet. Barring a blown circuit breaker, two conditions can cut power to an exterior outlet. The first is a malfunction of the outlet itself, which could be caused by loose wire connections, and the other is a tripped ground fault circuit interrupter (GFCI) outlet on the same circuit. What to do if you lose power in an outdoor outlet? If you have a non-functioning outdoor outlet that isn't a GFCI, and you notice blackening around the electrical box, it could have been damaged...