How To Run Electrical Wire Through Finished Walls

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How to run electrical wire through finished walls.

Always turn off the breakers in your electrical box before you begin to reduce the chance of an electrical shock should you accidently cut or drill into existing wiring. If there is no open path for the wire you may need to drill through wall studs or ceiling joists. Drill through the center of the stud using a maximum diameter of 60 of the stud s width 40 for load bearing walls. When adding or replacing wiring in finished walls most electricians will attempt to make the horizontal portion of the cable run in the unfinished attic or basement crawlspace areas looping the cable down or up through the wall cavity across the floor or ceiling joists then vertically through another stud cavity to the next wall box opening.

Make sure you use ul rated in wall wiring that meets local building and fire codes including cm cmr or cmp for computer networking and cl2 or cl3 for speakers. If surface mounted wiring through conduit is unacceptable you can run new wire through the walls and finish it almost invisibly once the job is complete. Run electrical cable through walls and across ceilings without tearing them apart. Running electrical cable inside finished walls starts with marking the framing and planning the best cable route.

Turn off the power. Cable can be fished through framing via access holes or through an unfinished basement or attic. Select proper wire or cable.