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#100139 - 10/21/06 03:30 PM 314.22
jersey Offline
Member
Registered: 02/19/05
Posts: 13
Loc: Hopatcong N.J. 07843
What does the exception in 314.22 mean?
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#100140 - 10/21/06 03:42 PM Re: 314.22
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: 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.
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Construction & Maintenance Electrician
Massachusetts
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#100141 - 10/21/06 04:11 PM Re: 314.22
jersey Offline
Member
Registered: 02/19/05
Posts: 13
Loc: 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 ?
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#100142 - 10/21/06 04:30 PM Re: 314.22
cavie Offline
Junior Member
Registered: 09/03/06
Posts: 5
Loc: Port Charlotte, Fl,US
plastic goof rings
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Correct me if I am wrong, I am here to learn
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#100143 - 10/21/06 04:34 PM Re: 314.22
jersey Offline
Member
Registered: 02/19/05
Posts: 13
Loc: Hopatcong N.J. 07843
they make them to fit in a fs box
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#100144 - 10/21/06 04:39 PM Re: 314.22
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
I am not a fan of plastic so I use these.



Add-A-Depth Ring
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Bob Badger
Construction & Maintenance Electrician
Massachusetts
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#100145 - 10/21/06 04:57 PM Re: 314.22
jersey Offline
Member
Registered: 02/19/05
Posts: 13
Loc: 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
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#100146 - 10/21/06 05:16 PM Re: 314.22
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: 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
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#100147 - 10/21/06 05:59 PM Re: 314.22
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: 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.
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Greg Fretwell
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#100148 - 10/23/06 03:24 PM Re: 314.22
Zapped Offline
Member
Registered: 10/01/02
Posts: 482
Loc: 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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