A low cost method of converting an electrical system in a home, which is lacking in ground fault interrupter circuits, to a home having ground fault interrupter devices without the need of special knowledgeable of electrical wiring. The method includes the changing of a conventional electrical outlet cover plate with a ground fault interrupter outlet cover plate, called a GFI cover plate, that has the appearance of a conventional electrical outlet cover plate but contains a ground fault interrupter circuit. The GFI electrical outlet cover plate of the present invention incudes a housing containing a ground fault interrupter circuit with the housing having on one face a set of prongs for inserting into the existing prong receptacles of an electrical outlet and on the opposite face a set of prong receptacles for receiving prongs of an electrical device The GFI electrical cover plate can be secured directly to the electrical duplex receptacle in the same manner as the conventional electrical outlet cover plate to provide a permanent outlet cover plate.