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MC connectors concealed in walls? #164429 06/03/07 07:35 AM
Joined: Nov 2005
Posts: 11
F
frankgi Offline OP
Member
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 08:09 AM
Joined: May 2002
Posts: 1,716
R
Roger Offline
Member
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 11:30 AM
Joined: Jul 2004
Posts: 9,568
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gfretwell Offline
Member
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 12:42 PM
Joined: Nov 2005
Posts: 11
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frankgi Offline OP
Member
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 02:55 PM
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Posts: 5,316
renosteinke Offline
Cat Servant
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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 03:53 PM
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Posts: 4,391
I
iwire Offline
Moderator
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 07:53 PM
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Posts: 9,568
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gfretwell Offline
Member
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 08:46 PM
Joined: Nov 2005
Posts: 11
F
frankgi Offline OP
Member
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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