ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Underground phone and coax depth?
by libellis - 02/08/23 08:38 PM
Al Hildenbrand - Minneapolis - obituary
by Bill Addiss - 02/03/23 07:38 PM
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
1 members (Scott35), 128 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Jun 2013
Posts: 5
C
New Member
I know this must have been asked before but I cannot find information. Table 19 nmd90 used in dry and damp locations, note 15. What is thermoplastic jacket? I am running #6 to pony panel in a pool shed, using pvc pipe underground 30 feet, under a deck for 10 feet then into house. Any suggestions?

Joined: Mar 2004
Posts: 947
T
twh Offline
Member
I think an underground raceway is a wet location. You can't put nmd90 in a wet location. ("d" is for dry?). Pulling a cable into a raceway is controversial. It seems you can put it in a water line but some inspectors won't allow it in pvc, because pvc is a raceway and a water line isn't.

I would probably use teck and direct bury. teck is good for anything, including rodents. The other option is nmwu.

Joined: Aug 2002
Posts: 402
J
Member
Thermoplastic jacket is the plastic outer casing on the cable.
AC90 has a metal jacket as opposed to the thermoplastic jacket.

Joined: Jun 2013
Posts: 5
C
New Member
Thanks for the replies. I guess the main thing is pipe underground is wet location. I guess under a deck which the board are tight together would also be wet location. I did not get the Table 19 nmd90 note 15. All nmd90 has thermoplastic jacket on the wire, so why mention it?

Joined: Aug 2002
Posts: 402
J
Member
Older NM cable has paper and tar type insulation. Not sure if it was called NMD90 though. It had names like NMD7. There is probably no requirement for it to be thermoplastic and possibly someone could make it the old way.

Last edited by jdevlin; 06/21/13 09:40 AM.

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
NickD
NickD
Amish Country, PA
Posts: 46
Joined: March 2013
Top Posters(30 Days)
triple 2
Popular Topics(Views)
303,302 Are you busy
232,258 Re: Forum
217,016 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5