ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 10
Admin 5
Recent Posts
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Dimmable LED 2x4 lay in fixtures
by gfretwell. 04/22/17 01:14 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,479 Are you busy
169,100 Re: Forum
162,483 Need opinion
Who's Online Now
0 registered members (), 44 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#98790 - 06/07/06 06:39 AM fire rated walls/ceilings  
gserve  Offline
Member
Joined: Mar 2003
Posts: 92
Can plastic boxes be used in these areas?


2017 / 2014 NEC & Related Books and Study Guides

#98791 - 06/07/06 08:09 AM Re: fire rated walls/ceilings  
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Yes, see the UL listing(s)for the boxes in question.

Roger


#98792 - 06/07/06 09:27 AM Re: fire rated walls/ceilings  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
One could also look inside the boxes and in most cases it will have lettering that will say "2 HR W C". In that case it would be suitable for a 2 hour rating in a wall or ceiling. I would qualify my statment by saying that is what I typically see in a non-metalic box used for NM cable. There would possibly be other ratings for other boxes.

typo's [Linked Image]

[This message has been edited by George Little (edited 06-07-2006).]


George Little

#98793 - 06/07/06 05:12 PM Re: fire rated walls/ceilings  
gserve  Offline
Member
Joined: Mar 2003
Posts: 92
Thanks for the info. Now how about the cover? I need to use a blank plate on a round plastic nail-on box. I looked at the Arlington plastic blank plate and I don't see a rating on it. Do I need to use a metal blank-up plate? I rather use the pastic one it is white like the ceiling.


#98794 - 06/07/06 06:09 PM Re: fire rated walls/ceilings  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,808
Brick, NJ USA
Gserve:
Just had this discussion with UL (Northbrook, Il) today, regarding 'extensions' in fire rated ceiling.

Per the White Book, 'ANY' type of plate can be installed on the rated boxes, as long as the boxes are installed to mfg/UL specs.

My inquiry related to extensions on deep set boxes, 2 hr rated ceiling; answer was yes, Arlington BE-1R is OK (4" round), but, BE-1 for 1-gang device is not. Go figure??

John


John


Member Spotlight
HappyElectrician
HappyElectrician
Penn USA
Posts: 31
Joined: December 2011
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 14 (0.003s) Memory: 0.7659 MB (Peak: 0.9034 MB) Zlib enabled. Server Time: 2017-04-23 08:03:14 UTC