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314.22 #100139
10/21/06 06:30 PM
10/21/06 06:30 PM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
What does the exception in 314.22 mean?

2017 / 2014 NEC & Related Books and Study Guides
Re: 314.22 #100140
10/21/06 06:42 PM
10/21/06 06:42 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
It mean you can come out of a box cover with a flexible wiring method without installing an extension box on it.

The cover must have mounting holes like a device cover, it can not have key hole slots or regular slots in it like a 4" sq or round blank does.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: 314.22 #100141
10/21/06 07:11 PM
10/21/06 07:11 PM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
Thanks , I was looking for an out for a problem I have. We installed some plastic fs boxes in a concrete pour. Not realizing that they were putting marble on these walls . Now my fs boxes are about 1 1/2 inches back of the finshed stone. Tried using a handy box collar but it doesnt cover the whole box. About 1/8 inch gap on each side. any ideas ?

Re: 314.22 #100142
10/21/06 07:30 PM
10/21/06 07:30 PM
C
cavie  Offline
Junior Member
Joined: Sep 2006
Posts: 5
Port Charlotte, Fl,US
plastic goof rings


Correct me if I am wrong, I am here to learn
Re: 314.22 #100143
10/21/06 07:34 PM
10/21/06 07:34 PM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
they make them to fit in a fs box

Re: 314.22 #100144
10/21/06 07:39 PM
10/21/06 07:39 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
I am not a fan of plastic so I use these.

[Linked Image]

Add-A-Depth Ring


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: 314.22 #100145
10/21/06 07:57 PM
10/21/06 07:57 PM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
Seems like those are only good up to 1 inch. And do you have to ground them? Can you use two of them together? Questions and more questions sorry

Re: 314.22 #100146
10/21/06 08:16 PM
10/21/06 08:16 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Not sure they are listed for multi gang use.

I have never seen anyone specifically ground them.

They end up grounded by contact with the yoke.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: 314.22 #100147
10/21/06 08:59 PM
10/21/06 08:59 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,252
Estero,Fl,usa
I have heard a lot of yacking about extension rings and nobody has come up with a real reason that you couldn't gang a dozen together. Just watch your conductor length. You still need 6" at the edge of the last ring. In the ceiling of the great room of the Ca-D-Zan there are a buttload of 3" rings to get them from the box in the structural ceiling down to the finish of the antique mohogany ceiling we couldn't touch.


Greg Fretwell
Re: 314.22 #100148
10/23/06 06:24 PM
10/23/06 06:24 PM
Z
Zapped  Offline
Member
Joined: Oct 2002
Posts: 482
Huntington Beach, CA, USA
I've got a reason for not using a dozen extensions in an installation.

I was rewiring a beach snack bar in San Clemente a few years ago and they stacked 5 extensions into a block-and-plaster wall, with the conduit and wire coming into the deepest box. Although I agree that it may not present a safety or fire issue, I can tell you that re-pulling that wire was no day in the park.


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