The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

   
Topic Options
Rate This Topic
#84752 - 04/30/03 07:19 PM sealtite in plenums?
Cindy Offline
Member
Registered: 06/23/01
Posts: 196
Loc: PDX, OR, US
sealtite or liquidtight flex, lfmc [but not lfnc] is ok up to 4' lengths for use in plenums based on 300.22 but does it need a letter "p" on it like the limited energy cables? or are they all ok? any sealtite fittings ok too? or labeled only?
Top
2017 / 2014 NEC & Related Books and Study Guides
#84753 - 05/04/03 07:14 AM Re: sealtite in plenums?
US Coreman Offline
Member
Registered: 03/26/03
Posts: 37
Loc: Illinois, USA
I don't believe that there is such a thing as "P" or "Plenum Rated" sealtight. I'm from Chicago, and we alwways had [and still do], a very stringent code for plenum areas. All we could use was sealtite fro some time, along with plenum rated boxes and covers, and special city of Chicago Plenum Rated fixtures. Not too long ago, a new product called FMT,[flexible metallic tubing], was put into use. It would seem to be a corrugated metal version of what in other parts of the country is called "smurf tube". It's intention was to decrease the amount of PVC [covering the fixture and box whips], in plenum spaces. You can imagine that we have a huge number of high rises, and data processing centers, as well as the stock and futures exchages here in Chicago, so the exposure of a problem was great.

While the cost of things penum rated has dropped shomewhat with the proliferation of things like plenum rated cable and wire ties, I think that if it was made, it would be $$$.

Gregg
Top
#84754 - 05/04/03 04:48 PM Re: sealtite in plenums?
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
There are products like: "Sealtite ZHUA…which when exposed to fire will not support flame and will not give off toxic emissions …trade sizes from 3/8” thru 2”… [but not currently a listed item.]
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
License exam
by TRUE POWER
01/23/17 09:16 PM
Looking for older post
by sparkyinak
01/23/17 12:27 AM
Members: Non-Members: Did you know?
by Admin
01/22/17 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM
International Wire Colour Codes
by Texas_Ranger
01/21/17 03:29 PM

Who's Online
1 registered (Admin), 72 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
New in the Gallery:
Desk-mounted "power-board"
Top Posters
gfretwell 9066
Trumpy 8560
pauluk 7693
HotLine1 6833
sparky 5545
Member Spotlight
Member Since: 11/11/05
Posts: 190

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals