To appease the plumbing gods the codes have made at least one notable exception.
How to run cable through stud walls.
You have access to the studs and wall plates at this time and it s easy to make holes and secure the cable with the proper staples.
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.
If there is no open path for the wire you may need to drill through wall studs or ceiling joists.
The best time to run a v cables through the walls is before the drywall has been hung.
Follow these guidelines to avoid causing structural damage.
Run electrical cable through walls and across ceilings without tearing them apart.
Starting from the basement or attic feed the end of non metallic nm electrical cable through the wall plate hole and into the stud bay.
These instructions assume that there is a closed wall between the service panel and the device that will be wired up.
Drill through the center of the stud using a maximum diameter of 60 of the stud s width 40 for load bearing walls.
For more in depth informatino about running fis.
From the edge of a stud.
Here s a general procedure to follow.
In bearing walls you can bore 60 percent size holes as long as you double up the studs and don t drill through more than.
If the wire will run from one room to the next it is sometimes easier to run the wire through the wall left to right straight up along the last stud in a corner over through the ceiling and.
Running electrical wire through the walls and hooking the wire to end point devices is an easy and safe task for a skilled do it yourselfer.
How to run electrical wire.
Have a helper reach into the cavity through the box hole grab the end of the cable and pull it out about 1 foot into the room.