ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Fuse blower plug?
by SPSchuman. 07/20/19 05:02 PM
Baseboard Mounted Light Bulb Socket
by SPSchuman. 07/15/19 03:22 PM
Hunter Fan Recalls Brunswick 3 & 4 Light Fans
by Admin. 07/11/19 11:08 AM
Honeywell Recalls some Smoke Sensors
by Admin. 07/11/19 11:03 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 37 guests, and 19 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Transformer in plenum ceiling? #94104
07/06/05 05:57 PM
07/06/05 05:57 PM
B
boggerbutt2454  Offline OP
Member
Joined: Feb 2005
Posts: 44
Concord NC USA
Is this legal or not? I know you can install one above a suspended ceiling but can you if it is a plenum ceiling?

2017 / 2014 NEC & Related Books and Study Guides
Re: Transformer in plenum ceiling? #94105
07/07/05 04:05 PM
07/07/05 04:05 PM
G
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,498
Michigan USA
I don't see a problem installing a transformer in a space above the ceiling as discribed in 300.22(C). If however, it is indeed a plenum as discribed in (B) you may have a problem. There are other considerations in Article 450 that need to be addressed also such as accessibility and size of transformer.


George Little
Re: Transformer in plenum ceiling? #94106
07/07/05 05:54 PM
07/07/05 05:54 PM
B
boggerbutt2454  Offline OP
Member
Joined: Feb 2005
Posts: 44
Concord NC USA
It is a 45 KVA transformer and it is vented.
I have never done this before as I was told it would have to be a sealed transformer or in an enclosure. It was explained that the dust and lint that is being sucked into the plenum could build up on the windings of a vented transformer and the heat from the transformer could ignite it. This installation would take place in a clothing store in a mall.


Featured:

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

 

Member Spotlight
togol
togol
NW In. USA
Posts: 421
Joined: September 2005
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
UTEE87 1
Popular Topics(Views)
257,168 Are you busy
192,983 Re: Forum
182,648 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 14 (0.004s) Memory: 0.9503 MB (Peak: 1.0766 MB) Zlib enabled. Server Time: 2019-07-21 23:18:37 UTC