Electrical wiring device with self-test and miswire detection

An electrical wiring device for use within a residential or commercial electrical power system, the device comprising:

• a line hot terminal,
• a load hot terminal, wherein the line hot terminal and the load hot terminal are connected by a hot conductor;
• a line neutral terminal,
• a load neutral terminal, wherein the line neutral terminal and the load neutral terminal are connected by a neutral conductor;
• a sense coil, the sense coil being configured to generate a signal proportional to a vector difference of currents present in the hot conductor and neutral conductor;
• a circuit interrupter including separable contacts arranged between the line hot terminal and the load hot terminal;
• and
• a controller configured to:
• initiate a simulated fault self-test;
• enter, during the simulated fault self-test, a non-trip test state in which detection of a fault condition based on an output of the sense coil does not cause actuation of the circuit interrupter;
• and
• trigger the circuit interrupter upon failing to detect a fault condition within a predetermined period.