Abstract: A combination electric power tap and cable connector is permanently attached to a duplex wall receptacle over the wall plate by means of a mounting stud and screw, wherein the mounting stud is an elongated member having an externally threaded machine screw which screws into the receptacle at one end and an internally threaded blind hole for receiving the mounting screw at the other end.

Abstract: An electrical power tap is provided with at least one shutter mechanism to block spurious insertion of a foreign object through one blade slot short of the power circuit contacts of an adjacent pair of plug receptacles. This mechanism includes a pair slides supported for independent movement between closed-latched and open positions. Access to the contacts of either power tap plug receptacle requires that its slide first be unlatched by a blade penetrating one slot and then cammed to the open position by another blade penetrating the other slot, as occurs incident to the insertion of a standard electrical plug.