How to Wire a 230-Volt Electrical Outlet

Wiring an outlet for 230 volts is identical to wiring an outlet for 220 or 240 volts. When electricity is wired into a home, the power company delivers electricity at 120 and 240 volts with a plus or minus of 5 percent. Therefore 220, 230 and 240 volts are all interchangeable and wired the same, using a 12-3 (four-wire) gauge wire. This is an extremely high voltage to work with, so consult a licensed electrician if you have any questions before beginning this project.


Step 1

Turn off any power to the wiring at the main circuit breaker box. The circuit breakers are typically labeled by number inside the breaker box door. The breaker will be a double pole switch, which is larger than the typical 110-volt breaker.

Step 2

Strip off one end of insulation off the end of each of the insulated wires (black, red, white), where the outlet is to be wired and mounted.

Step 3

Run the wiring through the back of the hole in the outlet frame and out the front. Slide the outlet up the wire and over the hole where the wiring exits the wall. Attach the outlet frame to the wall, using the screwdriver and screws included in the kit.

Step 4

Connect the wiring to the outlet prongs and tighten each screw down on its wire to secure it in place. Connect the red and black (hot) wires to the two brass screws labeled hot. Connect the white (neutral) wire to the silver screw labeled neutral. Connect the bare (ground) wire to the green screw labeled ground.

Step 5

Place the outlet cover over the outlet frame and insert a screw into each hole and tighten them down to secure it to the outlet.

Step 6

Turn the power back on at the circuit breaker box, and plug in a home appliance into the outlet and test for power.