A ground fault circuit interrupter (GFCI) with built in intelligence is described that includes circuitry to automatically indicate a device miswiring condition. When a GFCI is wired with its AC and LOAD terminals reversed, downstream devices are still protected in the event of a ground fault but the...http://www.google.fr/patents/US5963408?utm_source=gb-gplus-shareBrevet US5963408 - Ground fault circuit interrupter incorporating miswiring prevention circuitry
