How to Add an Electrical Outlet From an Existing Outlet
- 1). Switch off the power to the circuit that you are using. Ensure that the area being used is free and clear of all furniture or debris. Remove the wall trim with a putty knife or pry bar if necessary. Mark the spot where you will install the new outlet and trace the shape of the outlet with a pencil. Use a drywall saw to cut out the shape of the outlet. Cut deep enough to get through the wall but be wary of wiring on the other side, so you do not cut through it. Drill a hole in the center of the 2-by-4 boards above the outlet for the existing and new outlets using a 3/4-inch paddle bit for the drill. This hole is handy for fishing wiring from outlet to outlet.
- 2). Remove the cover from the existing outlet and add a new wire if a wire is not already provided. Use black, white and bare wires, and leave enough wire for 6 inches inside both outlets. Run the new wires from the electrical box of the existing outlet through the previously drilled holes so they are ready to attach to the new outlet.
- 3). Attach the bare wire, or the ground, to the electrical box of the existing outlet and then to the green screw of the new outlet. Attach the white wire, or the neutral, to the silver screw and the black, or the hot, to the brass screw of the new outlet. Screw the new outlet into place and install the cover. Replace the trim and switch on the power.
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