Abstract: A ground fault protection electrical outlet with miswiring indication includes, besides a main outlet unit that includes a housing, a primary and a secondary pair of first and second electrical connectors accessibly arranged on the housing, two main switches respectively interposed between the first, and the second, connectors of the primary and secondary pairs and simultaneously switchable between their open and closed positions, and at least two electrical contacts located at the same side of the switches as the secondary connectors, an indicator circuit built into the main outlet unit and operative for indicating a miswiring situation in which the wires of a wire pair that supplies electrical current to the outlet unit are mistakenly connected to the connectors of the secondary pair.