How far does a wire have to be from the face of a stud/joist?
#1
Member
Thread Starter
Join Date: Dec 2009
Location: Pennsylvania, USA
Posts: 152
Upvotes: 0
Received 0 Upvotes
on
0 Posts
How far does a wire have to be from the face of a stud/joist?
This is a relatively simple question, but I took a hiatus from elecitrical projects and apparently this piece of information I used to know took is still on a break.
When how far does a wire running through a joist/stud have to be from the face of a joist and, if a different distance, a stud without needing a nail guard?
When how far does a wire running through a joist/stud have to be from the face of a joist and, if a different distance, a stud without needing a nail guard?
#2
The wiring should be kept in the center of the stud.
Anything closer than the center and you should use a nail plate.
Anything closer than the center and you should use a nail plate.
#7
Member
Right - NEC doesn't care if the building falls down as long as it is not from an electrical fire. So just need a plate to protect NM cable from nails if less than 1 1/4"
It is building codes that limit where holes and notches go.
http://arch.umd.edu/Tech/Structural_..._Guide_A11.pdf
It is building codes that limit where holes and notches go.
http://arch.umd.edu/Tech/Structural_..._Guide_A11.pdf
#9
I've seen where at studs ,where verticle one meets bottom how someone notched out a area in verticle stud ,for wire ,an put nail plate over it .all behind the drywall.does that wire have to get rerun in center of studs as spoke on ?
And what is limit of # of wires going through same stud hole,or isn't there one?
Thanks
And what is limit of # of wires going through same stud hole,or isn't there one?
Thanks
#10
There is no posted amount of cables allowed thru a drilled hole but the wires need to fit comfortably.
I usually drill a 3/4" or 7/8" hole. Good for about three cables.
I usually drill a 3/4" or 7/8" hole. Good for about three cables.
#12
Derating factors start to kick in when too many cables are in one hole, especially if the wall is insulated.