Most electrical outlets in the home carry 110 volts, which powers the majority of household appliances. A 220-volt outlet is necessary to power large appliances such as a washer or dryer. A modern 220-volt outlet uses two hot wires that carry current from the fuse box, a neutral wire and a ground wire. An appliance that requires this type of outlets has a power cord with four prongs.
Push the switch for the main circuit breaker to the "off" position. Push the switch for an available circuit breaker to the "off" position. Remove the screws that hold the cover panel to the circuit breaker box, and take off the cover panel.
Remove at least 8 inches of the outer sheath from one end of electrical cable with the wire stripper. This will reveal a black wire, a red wire, a white wire and a bare wire. Strip 2 inches of insulation from the three insulated wires. Repeat this procedure with the other end of electrical cable, except strip off only 3 inches of the outer sheath.
Connect the end of the electrical cable with 8 inches of outer sheathing removed to the circuit breaker box. Wrap the bare end of the black wire around one of the terminal screws on an available 220V circuit breaker. Tighten the terminal screw against the wire to hold it in place. Repeat this procedure with the red wire and the remaining terminal screw for the circuit breaker.
Connect the white wire to one of the terminal screws on the bus in the center of the circuit breaker box. Connect the bare wire to a terminal screw on the grounding strip at the bottom of the circuit breaker box.
Connect the free end of the black wire to the right terminal screw of the outlet as you face the back of the outlet. Connect the red wire to the left terminal screw, connect the bare wire to the top terminal screw and connect the white wire to the bottom terminal screw.
Fasten the outlet to the wall with the screws for the outlet. Attach the cover plate over the outlet with the screws for the cover plate. Screw the cover panel back onto the circuit breaker box. Switch the main switch for the circuit breaker to the "on" position, and switch the circuit breaker to the "on" position.