Can I daisy chain outlets in 2x3x2.5 GEM boxes?

Reply

  #1  
Old 05-05-16, 11:59 AM
Member
Thread Starter
Join Date: May 2016
Location: usa
Posts: 3
Received 0 Votes on 0 Posts
Can I daisy chain outlets in 2x3x2.5 GEM boxes?

I want to add some outlets in walls of crappy old plaster on wood lath. I've found that the best old work box around for this is a 2x3x2.5 from Steel City with flip out clamp tabs CDOW-TG-25. The plastic old work boxes never secure properly even if they can fit so thick a wall, they're really only for wallboard. Plus some of these walls were built with sideways 2x4 so a 2.5" box barely fits.

I always thought it was OK to daisy chain these 12.5 cu in boxes with 14-2, I've seen it frequently, but when I just actually calculated it I come up with needing 14 cu in. WTF? These common boxes aren't good for much if you can't use 4 conductors under any circumstances. Have I gotten any of this wrong?
 
Sponsored Links
  #2  
Old 05-05-16, 01:18 PM
pcboss's Avatar
Forum Topic Moderator
Join Date: Jul 2002
Location: Maryland
Posts: 14,983
Received 35 Votes on 30 Posts
Having two cables and a device counts as 6 plus your ground meaning you need at least 14 cubic inches if an internal clamp is not used.
 
  #3  
Old 05-05-16, 06:10 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 54,219
Received 477 Votes on 447 Posts
These common boxes aren't good for much
Shallow boxes are considered specialty boxes and rarely allow two cable to be used in them.
When I'm forced to use shallow boxes I'll run the cable from each box to a common junction box.
 
  #4  
Old 05-05-16, 09:07 PM
Justin Smith's Avatar
Member
Join Date: Dec 2010
Location: Cressona, Pa, USA
Posts: 2,546
Received 0 Votes on 0 Posts
Use a deeper box and madison clips if you have wall space. If not use a 1900 box and a mud ring. You can usually get them in with a bit of patience. Spray foam works great for holding boxes in plaster and lath.
 
  #5  
Old 05-05-16, 09:35 PM
Member
Thread Starter
Join Date: May 2016
Location: usa
Posts: 3
Received 0 Votes on 0 Posts
Justin, how would I do that, screw a 1900 like below to the stud and plaster over the hole and mud ring when I'm done?

Name:  5.jpg
Views: 89
Size:  2.8 KB

The plastic shallow work boxes are made for 1/2"wallboard and simply won't work with lath & plaster.

Name:  6.jpg
Views: 102
Size:  2.8 KB

Searching the web on this subject I saw a reference to the box fill requirement for this size changing relatively recently. I've certainly seen real old work with 3 or 4 cables in one!
 

Last edited by PJmax; 05-05-16 at 10:02 PM. Reason: corrected pics
  #6  
Old 05-05-16, 10:07 PM
ray2047's Avatar
Member
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
You could gang to gem boxes, use madison clips then use a cover plate with one blank.
 
  #7  
Old 05-05-16, 11:54 PM
Member
Thread Starter
Join Date: May 2016
Location: usa
Posts: 3
Received 0 Votes on 0 Posts
ou could gang to gem boxes, use madison clips then use a cover plate with one blank.
Yeah, I thought of that. Or adding in another duplex or even a USB receptacle and making it a feature!

But I much prefer these boxes to using madisons. They really clinch tight
[ATTACH=CONFIG]65880[/ATTACH]
 
Attached Images  
  #8  
Old 05-06-16, 10:42 AM
ray2047's Avatar
Member
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
Those boxes are gangable so you could still use double gang.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: