ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Photo Editing Software?
by Fridayrack - 12/03/21 05:05 AM
Square D "All-In-One" Panelboard
by NORCAL - 11/30/21 12:48 PM
Where is Everyone?
by luckyshadow - 11/21/21 10:14 AM
It's been an interesting career
by The Watt Doctor - 11/19/21 09:56 AM
Well I am back to stay (nearly 6 years)
by The Watt Doctor - 11/19/21 09:17 AM
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), 18 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: May 2001
Posts: 144
T
Moderator
Section 12

12-1502 * ENT with Thermal Insulation

Question:
Does 2002 Code Rule 12-1502 or 12-1508, restrict the use of ENT when blanketed with Thermal Insulation?

Answer: No!

Background:
1998 Code Rule 12-1502(c) did not permit ENT to be used where enclosed in thermal insulation, this restriction has been deleted in the 2002 Code.

Rationale:
CSA conducted tests on ENT enclosed in thermal insulation and based on the results concluded the raceway was capable of dissipating the heat generated by current flow in conductors with no adverse effect on the ENT or its conductors.

Joined: Jul 2002
Posts: 175
E
Member
ENT is limited to installation-
a. in masonry walls,
b. in concrete slabs,
c. where exposed, and
d. for direct earth burial, when approved.

There was no need for the restriction against enclosing it in thermal insulation, as none of the permitted uses involve insulation.

Maybe it is permitted in the space between two masonry walls, where insulation is often used.

Ed


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

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

 

Member Spotlight
richard
richard
L.I. New York
Posts: 99
Joined: August 2003
Top Posters(30 Days)
dsk 2
NORCAL 1
Popular Topics(Views)
286,557 Are you busy
218,974 Re: Forum
205,093 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5