ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 10
Admin 4
Recent Posts
Windows 10, who's upgraded?
by ElectricianBud. 05/27/17 11:02 AM
How do you find a good employee?
by ElectricianBud. 05/27/17 10:58 AM
Recall notice: Bosch Solar panels
by ElectricianBud. 05/27/17 10:53 AM
Correct rotation, wrong sequence
by Potseal. 05/27/17 12:15 AM
Dryer, Range grounding from "Main" panel
by sparkync. 05/25/17 05:49 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
236,915 Are you busy
171,925 Re: Forum
164,807 Need opinion
Who's Online Now
0 registered members (), 46 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#93014 - 04/25/05 07:43 AM Tray Cable/ IT room floors  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
2 Questions.

1. 645.5(d), type mc cable can be used in raised floors in IT rooms.

Is this right? I thought it all had to be liquidtight.

Or am I missing the section somewhere that if water lines are under the floor, it all has to be liquidtight.


2. Where do I find where Thhn is cable tray rated? I was at a lumber mill the other day and noticed what I thought was 500mcm in cable tray. Single conductors, not tray cable.

Any help appreciated.


Dnk......


2017 / 2014 NEC & Related Books and Study Guides

#93015 - 04/25/05 08:07 AM Re: Tray Cable/ IT room floors  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
I'm reading in 310.11(B) that conductors such as THHN if suitable for Tray Cable need to be marked TC every 40 inches on the surface of the insulation. There are other marking options for multi conductor cables and all this is spelled out in 310.11.


George Little


Member Spotlight
Scott35
Scott35
Anaheim, CA. USA
Posts: 2,707
Joined: October 2000
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: 0.012s Queries: 14 (0.002s) Memory: 0.7433 MB (Peak: 0.8627 MB) Zlib enabled. Server Time: 2017-05-28 04:47:58 UTC