ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#101662 - 09/06/02 05:21 AM 12-1502 * ENT with Thermal Insulation
Tony Moscioni Offline
Moderator
Registered: 05/15/01
Posts: 144
Loc: CANADA
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.
Top
Tools for Electricians:
#101663 - 09/06/02 02:32 PM Re: 12-1502 * ENT with Thermal Insulation
electric-ed Offline
Member
Registered: 07/08/02
Posts: 175
Loc: Canada
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
Top

Member Spotlight
Member Since: 02/23/13
Posts: 204
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 61 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
KrmtFrg, Stack, Scotto, Freecrowder, clee512

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