ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
PurpleAir Recalls Power Supply Units
by Admin. 02/14/19 08:43 PM
Utility Company Programs
by katty81. 02/14/19 11:11 AM
AFDD's coming to the UK
by Trumpy. 02/14/19 12:29 AM
250.104
by BigB. 02/13/19 07:22 PM
Delta Electronics Recalls Solar Inverters
by electech. 02/13/19 10:26 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 11 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
fire rated walls/ceilings #98790
06/07/06 05:39 AM
06/07/06 05:39 AM
G
gserve  Offline OP
Member
Joined: Mar 2003
Posts: 92
Can plastic boxes be used in these areas?

2017 / 2014 NEC & Related Books and Study Guides
Re: fire rated walls/ceilings #98791
06/07/06 07:09 AM
06/07/06 07:09 AM
R
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Yes, see the UL listing(s)for the boxes in question.

Roger

Re: fire rated walls/ceilings #98792
06/07/06 08:27 AM
06/07/06 08:27 AM
G
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,493
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
Re: fire rated walls/ceilings #98793
06/07/06 04:12 PM
06/07/06 04:12 PM
G
gserve  Offline OP
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.

Re: fire rated walls/ceilings #98794
06/07/06 05:09 PM
06/07/06 05:09 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,069
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

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Vlado
Vlado
Croatia
Posts: 28
Joined: February 2011
Show All Member Profiles 
Top Posters(30 Days)
Admin 7
BigB 3
Popular Topics(Views)
253,199 Are you busy
189,856 Re: Forum
179,558 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.018s Queries: 14 (0.003s) Memory: 0.9670 MB (Peak: 1.1062 MB) Zlib enabled. Server Time: 2019-02-15 23:33:40 UTC