0 registered members (),
23
guests, and 14
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
|
NM Cable entering boxes.
#214327
11/16/14 01:45 PM
|
Joined: Jan 2004
Posts: 1,507
OP
Member
|
The question came to me about how far must the NM cable sheath enter the boxes? I could only find the information located in 334.15(C). Nothing about entering the box sans the conduit. My answer would be, the sheath must extend beyond the clamping device be it a non-metallic box or a metal one. The person calling me was concerned because his boss wants the sheath to be at least 3/4" into the box. There's got to be more important things than this dispute.
George Little
|
|
|
Re: NM Cable entering boxes.
[Re: George Little]
#214329
11/16/14 07:32 PM
|
Joined: Apr 2002
Posts: 7,225
Member
|
George: From 314.17 (C) of 2014 NEC.....
Where nonmetallic sheathed cable or multi-conductor Type UF cable is used, the sheath shall extend not less than 6 mm (1/4 in.) inside the box and beyond any cable clamp. In all instances, all permitted wiring methods shall be secured to the boxes.
Last edited by HotLine1; 11/17/14 10:04 AM. Reason: Corrected copy booboo
John
|
|
|
Re: NM Cable entering boxes.
[Re: George Little]
#214331
11/17/14 02:44 AM
|
Joined: Jul 2004
Posts: 9,555
Member
|
Greg Fretwell
|
|
|
Re: NM Cable entering boxes.
[Re: George Little]
#214335
11/17/14 06:45 PM
|
Joined: Jan 2004
Posts: 1,507
OP
Member
|
Thanks Guys. You are the best. I would have expected it to be in Article 334 but it wasn't. HEY Inspectors have every right to be wrong :)) And I'm probably one of the few that would admit it.
That's what this BB is all about.
George Little
|
|
|
Re: NM Cable entering boxes.
[Re: George Little]
#214336
11/17/14 09:50 PM
|
Joined: Apr 2002
Posts: 7,225
Member
|
George: As I say to some..."I'm human, I do make mistakes too"
John
|
|
|
Re: NM Cable entering boxes.
[Re: George Little]
#214339
11/17/14 11:20 PM
|
Joined: Jul 2004
Posts: 9,555
Member
|
I guess it is because there is more than one kind of cable and they were trying to avoid the mess that was created when they put a cable rule in 320 and referred to it in all the other cable articles. (like accessible attics in 330.23 334.23 etc)
Greg Fretwell
|
|
|
|
|