ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
AreMetal Ladders Ever OK For Electrical Work?
by HotLine1. 01/22/18 07:31 PM
Photocell
by twh. 01/22/18 05:06 PM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 19 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
blown in insulation with K&T #193758
04/17/10 01:16 PM
04/17/10 01:16 PM
O
Oh Well  Offline OP
Member
Joined: Dec 2005
Posts: 12
I couldn't find a topic relating to this so here goes. The Ont.electrical does not mention insulating existing walls that have knob and tube wiring. Would this be covered under the building code? I know it's not a good practice but who actually regulates this. Thanks in advance.

Tools for Electricians:
Re: blown in insulation with K&T [Re: Oh Well] #193899
04/27/10 01:23 AM
04/27/10 01:23 AM
J
jay8  Offline
Member
Joined: Jul 2005
Posts: 183
Vancouver, BC
You would not find anything in the building code regarding blown in insulation in a cavity where knob and tube exists. But if you wanted to make a case where you wanted to point out it could not be done, that would be an electrical code issue. In this case since knob and tube wiring gives no temperature ratings, you could say it is not then suitable to be enclosed in thermal insulation since it is not marked as such. However I know there are hundreds of homes out there that would have insulated attics with knob and tube, not saying it is right.

Re: blown in insulation with K&T [Re: jay8] #193908
04/27/10 12:44 PM
04/27/10 12:44 PM
M
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
2-124 of the 1986 Canadian electrical code does not prohibit thermal insulation . It states that the insulation must not put any stress on the wire associated with the weight of insulation. Insulation with a mettalic face must be kept 25mm away from K&T.
Loose blown in insulation is OK with any type of wiring method recognized by the code.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Lostazhell
Lostazhell
Bakersfield, CA (Originally Orange Co.)
Posts: 1,431
Joined: February 2004
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
sparky 15
Potseal 15
Popular Topics(Views)
243,596 Are you busy
180,399 Re: Forum
170,866 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.014s Queries: 15 (0.003s) Memory: 0.9498 MB (Peak: 1.0749 MB) Zlib enabled. Server Time: 2018-01-23 04:09:12 UTC