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

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by gfretwell
10/24/16 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
0 registered (), 321 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#83465 - 02/03/03 10:39 AM Codes for Cable Trays vs Conduit
mborner Offline
Junior Member

Registered: 02/03/03
Posts: 2
Loc: Betlehem, GA USA
Is anyone aware of NEC or NFPA code that requires communication cabbling to be in EMT coduit rather that cable trays for the following reasons:
There will be fiber and speaker wires etc. Some of the devices are considered Life savings Devices as speakers and plasma displays that might be used to announce fire threat or evacuation orders.

Ceiling space is a return air plenum
Ceiling is not fire rated
Some devices connected are Life savings devices.

2014 / 2011 NEC & Related Books and Study Guides
#83466 - 02/04/03 11:13 AM Re: Codes for Cable Trays vs Conduit
Elzappr Offline

Registered: 12/20/01
Posts: 273
Loc: Oregon
Great question! I have always isolated fire/life/safety wiring from everything else, but I don't know the nfpa reference for that practice. I suspect that there might be something in nfpa 72, (National Fire Alarm Code), that might explain how these cabling separations might be required. I don't really know what the situation is in the case you described. It might just come down to a matter of separating class 3 cable from class 2 cable -- NEC 725.


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