Running Electrical Wire Behind Walls

Before beginning your project, you’ll need to decide whether to pull power for your new outlet or switch from an existing outlet or directly from your breaker panel. Either way, be sure adding a new device won’t overload the circuit. For more information on calculating circuit loads, see our Installing a New Circuit Project Guide. 

You’ll also want to diagram your wiring path. Often the simplest approach is to run cables to either the attic directly above the new outlet or switch, or to a basement or crawl space below. Running wires up to the attic or down to the basement may seem like the long way around if you’re adding a device along the same wall as the outlet you’ll use for power. However, the cost for the additional cable is more than offset by the time it would take to make the drywall repairs that result from cutting holes at each wall stud between the old outlet and the new device. 

This project guide will walk you step-by-step through running electrical wires behind the walls. Before beginning any project, read and observe any manufacturer’s instructions and adhere to all recommended safety precautions carefully. If you have any doubts, consult a licensed electrician. 

If you aren’t able to install electrical wires behind walls due to ductwork or plumbing, an alternative solution is to conceal wires using raceway, which runs along the surface of walls and can be painted to blend with your decor.

Detailed information about additional aspects of this project can be found in our other buying and project guides. Please consult the following before beginning your project: