Things You'll Need
Electrical conduit
Wire stripper
Wire cutter
Installing an outdoor 220-volt outlet involves routing wires and careful execution to prevent electrocution, but is almost the same as installing one indoors. To do this effectively, determine the perfect spot where to install the outlet. The wires must also be correctly placed and connected to make the outlet work.
Step 1
Open the breaker box of your house and check if it accepts a 220V circuit. There must be at least two adjacent unused spaces in your circuit breaker. Have an electrician install a larger breaker box in case there is not enough space available.
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Step 2
Turn off the breaker box's main switch and install the breaker in the box by attaching its non-conducting side and snapping it in position. Make sure the breaker is sized in terms of the amperage for the appliance where the line is intended for. Consult the American Wire Gauge chart for reference to the wire size you must use.
Step 3
Run the wires from your breaker box and outside your house until you reach the area where you wish to install the 220V outlet. Do not connect the wires just yet.
Step 4
Pass the wires through your electrical conduit in case you are going to secure it against the wall outside your house.
Step 5
Follow the instructions of the outlet manufacturer for attaching the wires. Mount the 220V outlet in the chosen location.
Step 6
Go back to the breaker box and connect the hot wires from the outlet to the circuit breaker. Start by connecting the neutral wire to your breaker's neutral bus bar. Make sure all the connections are clearly done before turning the breaker box back on.
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