ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Canada for the win
by renosteinke - 12/09/22 08:48 PM
Tiny Homes and the NEC
by gfretwell - 12/06/22 01:43 AM
EMC Glands on Motors
by Trumpy - 12/01/22 06:12 AM
Ground Rods: Installation and Hook-Up
by Trumpy - 12/01/22 05:54 AM
Happy Thanksgiving all!
by gfretwell - 11/30/22 05:55 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
1 members (Scott35), 108 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#159799 01/30/05 05:00 PM
Joined: Nov 2004
Posts: 11
D
Member
is running cat5e in heating ducts alowed ?


Dryden
Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

#159800 01/30/05 05:12 PM
Joined: Jan 2005
Posts: 5,363
Likes: 1
Cat Servant
Member
Simple answer: No
Little more specific: you can go THROUGH, at ninety degrees. I would infer that cable should then be plenum rated.

#159801 01/30/05 06:28 PM
Joined: Nov 2004
Posts: 11
D
Member
i didnt think so
ok thanks


Dryden
#159802 02/01/05 04:18 PM
Joined: Dec 2004
Posts: 23
D
Member
i don't think you can run through ducts even at 90 degrees... where did you see that at renosteinke. why that would be something to take a picture of and submit to the picture forum

#159803 02/01/05 07:47 PM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
Not that its a great practice, it is allowed with some limitation. (With Plenum rated cable...)

Quote
800.53 (A)Plenum. Cables installed in ducts, plenums, and other spaces used for environmental air shall be Type CMP. Abandoned cables shall not be permitted to remain. Types CMP, CMR, CMG, CM, and CMX and communications wire installed in compliance with 300.22 shall be permitted. Listed plenum communications raceways shall be permitted to be installed in ducts and plenums as described in 300.22(B) and in other spaces used for environmental air as described in 300.22(C). Only Type CMP cable shall be permitted to be installed in these raceways.


Mark Heller
"Well - I oughta....." -Jackie Gleason
#159804 02/01/05 08:15 PM
Joined: Jan 2005
Posts: 5,363
Likes: 1
Cat Servant
Member
Looks like I get smacked for "shooting from the lip." Apparently I was repeating something I'd heard, rather than actual code. Of course, you must forgive me, as I've never seen wiring in ducts (other than a short length to power something that was part of the duct system!).
300.21 and .22 seem to be the primary place where the NEC discusses wiring in ducts, with numerous other sections that boil down to "OK to run plenum rated wires in ducts." There ARE some other qualifications, so check it out.

#159805 02/01/05 08:25 PM
Joined: May 2003
Posts: 2,876
E
e57 Offline
Member
Reno, I'm not smacking anyone....

It is a horrible practice in my opinion though. I've seen it done, even been forced by an employer to do it myself once. I don't like it at all.

Seen this thread for a day or so, but was reluctant to answer. Wish it were not an actual code.

[This message has been edited by e57 (edited 02-01-2005).]


Mark Heller
"Well - I oughta....." -Jackie Gleason

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
SafetyWired
SafetyWired
Pa, USA
Posts: 44
Joined: July 2013
Top Posters(30 Days)
Trumpy 6
NORCAL 3
Popular Topics(Views)
300,689 Are you busy
230,366 Re: Forum
215,127 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5