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Tapping into existing box

ssbtech

Well-known member
Joined
May 1, 2012
Messages
420
Location
BC, Canada
Hello,

I've got a wall separating my living room and second bedroom.

On the living room side, there's a TV on the wall, the mount is bolted to two studs. On the opposite side there's an electrical outlet on the correct side of one of those studs to pull a wire from and feed an outlet I'd like to install behind the TV. Everything lines up perfectly.

The building was hammered together in 1982. The electrical outlet in the bedroom is a fairly standard nail-on box, however it appears that the cable retention method at the top of the box (above the box, not in it) is in the form of a separate clip or insert that grabs the cable. There's already one in place for the two cables in/out of the box, but the second entry into the box doesn't have one of these clips. (The box is grey plastic, the clip that's inserted is yellow).

I know new boxes have a tang that grabs the jacket of the Romex as it's inserted into the box, but this doesn't look to be the case here.

Is there another approved method for securing the wire into the box, or is this a case of rip open the drywall and replace the box?

Thanks!
 
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jeffmattero76

Well-known member
Joined
Mar 26, 2018
Messages
115
Not sure about the code requirrments, and I have never seen anything but the "tang" (as you call it) holding the wore where it enters the box.

If you do have to replace it, it is a simple matter of using a sawzall to cut the nails of the old box, and buy a new "old work" box to replace it.

Sent from my SM-G530T using Tapatalk
 
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Norcal

Well-known member
Joined
Mar 16, 2008
Messages
13,752
Not sure about the code requirrments, and I have never seen anything but the "tang" (as you call it) holding the wore where it enters the box.

If you do have to replace it, it is a simple matter of using a sawzall to cut the nails of the old box, and buy a new "old work" box to replace it.

Sent from my SM-G530T using Tapatalk

A nail on box is taller then a cut in box, the cut in box will fall through the existing drywall opening, the best option is to cut the nails as suggested above but use a Smart Box to replace the nail on, they have screws inside the box to fasten it to the stud.

https://meproducts.net/products/smartbox
 
Last edited:

ard

Well-known member
Joined
Feb 16, 2015
Messages
4,391
Location
Sierra Foothills... California
OP is in Canada.

Id like to see a picture....

I have also removed the first box- then add a new box and replace the old one- if the original box has odd clips, cannot be accessed, etc,etc

Carefully hack it out WITHOUT damaging surrounding sheetrock- the youi can use an old work box (or internal screw-to-the-stud box) to replace
 

Zeke

Well-known member
Joined
Aug 13, 2009
Messages
17,176
Location
Long Beach CA, the sewer by the sea.
Hello,

I've got a wall separating my living room and second bedroom.

On the living room side, there's a TV on the wall, the mount is bolted to two studs. On the opposite side there's an electrical outlet on the correct side of one of those studs to pull a wire from and feed an outlet I'd like to install behind the TV. Everything lines up perfectly.

The building was hammered together in 1982. The electrical outlet in the bedroom is a fairly standard nail-on box, however it appears that the cable retention method at the top of the box (above the box, not in it) is in the form of a separate clip or insert that grabs the cable. There's already one in place for the two cables in/out of the box, but the second entry into the box doesn't have one of these clips. (The box is grey plastic, the clip that's inserted is yellow).

I know new boxes have a tang that grabs the jacket of the Romex as it's inserted into the box, but this doesn't look to be the case here.

Is there another approved method for securing the wire into the box, or is this a case of rip open the drywall and replace the box?

Thanks!

Sounds to me like you're going to have a box fill issue. If that is the case, you'd be better off opening the wall and putting in a 4S box and running your power to the new box opposite.
 
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