Electrical wiring device with protective features

An electrical wiring device for use in an electrical distribution system including a plurality of line conductors coupled to a source of AC power and a plurality of load conductors, comprising:

• a plurality of line terminals configured to terminate the plurality of line conductors and a plurality of load terminals configured to terminate the plurality of load conductors, the electrical wiring device being in a properly wired condition when the plurality of line conductors are terminated to the plurality of line terminals and in a miswired condition when the plurality of line conductors are terminated to the plurality of load terminals;
• a circuit interrupter assembly including a plurality of moveable contacts, the plurality of movable contacts being configured to be latched into a reset state in response to a reset stimulus whereby the plurality of line terminals are electrically coupled to the plurality of load terminals, the movable contacts being configured to be driven into a tripped state in response to a tripping stimulus whereby the plurality of line terminals are electrically decoupled from the plurality of load terminals;
• a protective circuit assembly including at least one power supply coupled to the plurality of line terminals, the at least one power supply being charged in the reset state and in the tripped state when the device is in the properly wired condition, the protective circuit assembly including an automatic test circuit configured to introduce a test fault condition during a predetermined test interval when the device is in the reset state or when the device is in the tripped state and in the properly wired condition, the protective circuit assembly also including at least one fault detector deriving power from the at least one power supply and configured to generate a fault detection signal based on electrical perturbations propagating on at least one of the plurality of line terminals and a test fault detection signal in response to the test fault condition if the protective circuit assembly is operable and the at least one power supply is substantially charged;
• and
• a device integrity evaluation circuit coupled to the plurality of load terminals, the device integrity evaluation circuit including a timing circuit configured to provide a time measurement and the tripping stimulus when the time measurement exceeds a predetermined threshold, the test fault detection signal resetting the time measurement in the properly wired condition before the time measurement exceeds the predetermined threshold but does not reset the time measurement in the miswired condition.