Building wiring system, components and methods

A building electrical wiring system comprising:

• a component box including an attachment mechanism configured to attach the component box to a wall frame of a building;
• a current plate configured to be mounted at a back of the component box and further including a dielectric substrate having a plurality of receiving slots therein, corresponding respectively to at least hot, neutral and ground, and facing into the component box from the back thereof;
• a component device including a fastener mechanism configured to fasten the component device to a front of the component box and including internal component circuitry terminating in a plurality of conductor stems each configured to insert into a respective receiving slot of the current plate;
• and
• an electrical jumper bar including an insulated conductor having a plurality of conductive paths extending between opposite ends;
• wherein each opposite end includes a respective prong for each conductive path and configured to electrically couple the current plate to another current plate associated with another component device;
• the current plate comprising a plurality of rows of connector holes in a top surface of the dielectric substrate, wherein a respective connector hole of each of the plurality of rows is electrically coupled to a respective receiving slot and corresponds respectively to the at least hot, neutral and ground, wherein a first row of the plurality of row of connecting holes is configured to receive stripped ends of feed wires, a second row is configured to receive prongs of the electrical jumper bar, and a third row is configured to receive stripped ends of load wires.