How to Add an Electrical Outlet in a Garage

As every homeowner and handyman knows, there are never enough electrical outlets in a home.
An electrical outlet in a garage provides a convenient source of power to a workspace.An electrical outlet in a garage provides a convenient source of power to a workspace.
This holds especially true in the garage, where special projects requiring more power are endless. Adding an outlet to the garage is not a job one should be intimidated by. You can accomplish this task by following certain guidelines for adding an outlet to the garage.

Step 1

Locate the last existing outlet in the circuit nearest to the garage.

Step 2

Turn the circuit breaker off at the lighting panel to cut power to this circuit. Verify the appropriate circuit has been disconnected by using a volt meter.

Step 3

Remove the cover from the existing outlet by removing the screws with a Philips screwdriver. With cover removed, remove the upper and lower screw from the receptacle and pull it from the box as far as the existing wire will allow.

Step 4

Route new electrical wire into existing box and pull in approximately 6 inches of slack. Trim back 4 inches of outer sheath to expose the three electrical wires.

Step 5

Strip back 1/2 inch of insulation from the black and white wires. Connect the black wire to the existing receptacle’s dark, copper wire screw. This screw should be located directly adjacent to the pre-existing black wire. Connect the white wire to the light-colored wire screw on the receptacle located adjacent to the pre-existing white wire. Tie the bare copper ground wires together within the outlet box.

Step 6

Install the receptacle into the outlet box and secure with the two screws provided. Install the outlet cover over the receptacle and secure with Philips screwdriver.

Step 7

Route the new wire to the desired location of the new outlet.

Step 8

Mount the new outlet box onto the wall of the garage in the desired location. Use wood screws to mount the box into a stud located within the wall.

Step 9

Pull the electrical wire into the new outlet box and allow approximately 6 inches of slack into the box. Trim back 4 inches of outer sheath as before. Strip 1/2 inch of insulation from the black and white wire inside the outlet box.

Step 10

Connect the black wire to the dark, copper-colored wire screw and the white wire to the light-colored wire screw. Secure the bare ground wire to the green grounding screw on the new receptacle

Step 11

Install the receptacle into the outlet box and secure with the two screws provided. Install the outlet cover over the receptacle and secure with Philips screwdriver.

Step 12

Turn on the power at the circuit breaker to re-energize the newly install outlet.

Things You Will Need

  • Wire cutters
  • Wire strippers
  • Philips screwdriver
  • Regular screwdriver

About the Author

Damon Hildebrand is a retired U.S. Navy veteran. He has more than 15 years within the oil and gas industry in both technical and managerial positions. Hildebrand has been a technical writer and communicator for the last four years. He is a certified specialists in lubrication and tribology, as well as a certified maintenance and reliability professional.