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MC connectors concealed in walls? #164429
06/03/07 08:35 AM
06/03/07 08:35 AM
F
frankgi  Offline OP
Member
Joined: Nov 2005
Posts: 11
NJ USA
A very knowledgeable co worker of mine claims to have failed a rough inspection because of an MC connector being used in a box that is to be concealed in a wall. I believe it is a JHA vio. Any thoughts?


"Its all about the small details"
Building Codes & Related References
Re: MC connectors concealed in walls? [Re: frankgi] #164430
06/03/07 09:09 AM
06/03/07 09:09 AM
R
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
I would say there is a misunderstanding somewhere in the translation of the story, or a misinformed inspector.

Roger

Re: MC connectors concealed in walls? [Re: Roger] #164433
06/03/07 12:30 PM
06/03/07 12:30 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,298
Estero,Fl,usa
Is he saying the connector is concealed or the whole box(cover not accessible).


Greg Fretwell
Re: MC connectors concealed in walls? [Re: gfretwell] #164435
06/03/07 01:42 PM
06/03/07 01:42 PM
F
frankgi  Offline OP
Member
Joined: Nov 2005
Posts: 11
NJ USA
Thanks Roger and Greg for your replies.
It was a plain old side bracketed deep 1900 box with 9 ko's (3 on 3 sides with no internal clamp)used as a switch location (mud ring added) NEC 2005 Art 330 does not mention any vio about MC connectors in walls or concealed locations.


"Its all about the small details"
Re: MC connectors concealed in walls? [Re: frankgi] #164441
06/03/07 03:55 PM
06/03/07 03:55 PM
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
I have heard folks claim that 90-degree MC, or flex, fittings had to be treated as an LB would be treated, and remain accessible.

Personally, I do not share this opinion. I do concede that some such fittings have little covers that make them resemble conduit bodies, but I still do not consider them to be the same as conduit bodies.

As for straight connectors .... I'm not sure it's possible to use them without concealing them. The NEC clearly allows for fishing the material ... and it's been quite a while since I saw a box with internal clamps.

Re: MC connectors concealed in walls? [Re: renosteinke] #164443
06/03/07 04:53 PM
06/03/07 04:53 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
I think it is confusion with the requirement that 90 degree FMC connectors stay accessible.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: MC connectors concealed in walls? [Re: iwire] #164453
06/03/07 08:53 PM
06/03/07 08:53 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,298
Estero,Fl,usa
The only reason conduit bodies need to remain accessible is so you can pull in new conductors after the walls are closed up. You don't pull new conductors in a cable.


Greg Fretwell
Re: MC connectors concealed in walls? [Re: gfretwell] #164456
06/03/07 09:46 PM
06/03/07 09:46 PM
F
frankgi  Offline OP
Member
Joined: Nov 2005
Posts: 11
NJ USA
True Greg...or no one is going to make a splice in an MC 90 connector...imagine that!
Thanks for all the replies!


"Its all about the small details"

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