e without any ground fault upon occurrence of a ground fault which causes the switches 13 19 and 65 to open power to the led 81 is cut off and the light is extinguished an extinguished led provides a visual indication that a fault exists in the circuit the led can also be used to test for reverse installation of the ground fault circuit interrupter should the load terminals 21 and 23 be inadvertently connected to the power line and the line leads 1 and 3 mistaken for the load leads the led 81 will remain lit at all times even after the test button 71 is actuated since power will be continuously applied to the terminals 21 and 23 across the light emitting diode circuit the disclosed circuit by employing auxiliary switch 65 between the contacts 31 and 63 to selectively connect the relay coil 61 to the load phase wire 25 prevents burn out of the coil 61 upon an inadvertent reversed connection of the ground fault circuit interrupter if the load side of the coil 61 were permanently connected to load phase wire 25 inadvertent reverse connection of the ground fault circuit interrupter whereby the load terminals 21 and 23 would be connected directly to the power line would result in a continuous flow of current through the coil 61 even after the contact switches 13 and 19 were tripped this would likely result in burn out of the coil 61 which is intended only for intermittent duty under the arrangement shown in fig1 even if power is supplied directly to.