The modular electrical wiring device includes an electrical wiring device and an external plug that is electrically coupled by one or more wires to the wiring device. The modular plug is releasably coupled to a connector in a male-female relationship. Both the modular plug and connector include internal contacts for electrically coupling one to the other. The connector is electrically coupled to and terminates one or more building wires, which are used to provide power to one or more of the wiring devices. The external plug is removably coupled to the connector to provide electrical power to the wiring device by establishing and electrical pathway from a source of electrical power, through the building wires, the connector and the modular plug to the wiring device.