How to Run Wiring to Attached Garages
Attached garages are a great idea because they give you a safe place to store your vehicle. Attached garages also make great work areas for home projects and hobbies. Not all attached garages are equipped with electricity or enough outlets for your needs. Hiring an electrician can be very costly and can only become more expensive if you need to add electrical panels. The easiest solution to increase electrical options in attached garages is to run wiring from the main house to the garage.
Step 1 – Locate the Wires
Attached garages share a wall with the house and the wires you need are located in there. Determine the area where you want to place the new outlet. You will want to locate the wires in the wall that are closest to this spot. Use a pencil to mark the area and then turn to the voltage detector. Run it over the wall. The lights on the detector will come on or a buzzer will sound to alert you to current. Mark this area with the pencil. Based on these findings you may wish to change the location of the outlet.
Step 2 – Install the Outlet Box
The walls of attached garages that connect to the home are typically made from the same materials and share the same insulation. Once you have determined where the wires are you will need to install an outlet box. Prior to doing this turn off the electric at the circuit breaker and post a note alerting anyone that may stumble upon it to not turn it back on. Use the stud finder to locate the studs in the wall and mark them.
Use the saw and carefully a cut a hole the size of the outlet box. Find the black and white wires: cut them and then strip away some of the casing. Cut off a length of black and white wire from the new spools and strip the ends. Spice them to the wires in the wall using the caps and then thread them into the outlet box. You are essentially creating a bridge. Place the outlet box inside the hole you made and attach it with screws through the plastic frame around the box.
Step 3 – Install an Outlet
An outlet is a fairly basic device and connecting it is easy. Use a screwdriver to loosen the terminal screws and then wrap the black wire around the brass screw and the white wire around the silver screw and tighten. If there is a copper wire on the outlet tape it to the outlet box with electrical tape. Touch the leads of the voltage detector to the wires on the outlet. If the wires are connected correctly the detector will sound. Attach the outlet to the outlet box, put on the cover and turn on the power.