ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Changing a Bulb
by mbhydro. 07/21/18 05:57 PM
Opinions & comments
by HotLine1. 07/21/18 04:44 PM
Tray cable?
by gfretwell. 07/11/18 10:18 PM
Eaton Heavy Duty 30A and 60A Safety Switches
by Admin. 07/11/18 09:49 PM
ORTOVOX Recalls Avalanche Transceivers
by Admin. 07/11/18 09:44 PM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 22 guests, and 17 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
De-icing & snow melting equip #98041
04/29/06 05:36 PM
04/29/06 05:36 PM
G
George Little  Offline OP
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
Does anyone on this BB have any experience with mats installed in concrete driveways for snow melting or de-icing? I have a contractor that says that when you have mulitple mats, the manufacturer specs tell him to splice the leads in a "T" conduit body and it is acceptable to bury said conduit body in the concrete??? I've asked him for info from the manufacturer. This splice would be not accessible. Need your comments before Monday. [Linked Image]


George Little
2017 / 2014 NEC & Related Books and Study Guides
Re: De-icing & snow melting equip #98042
04/29/06 06:17 PM
04/29/06 06:17 PM
G
golf junkie  Offline
Member
Joined: Apr 2001
Posts: 507
York, NE
Sounds crazy to me George.

I don't have any experience to relate to your situation but I would think that would be a last ditch option.

How long are the leads on the mats?

GJ

Re: De-icing & snow melting equip #98043
04/29/06 08:11 PM
04/29/06 08:11 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,242
Estero,Fl,usa
Since any repair would require busting up the concrete anyway I am not sure of why there would be a problem with this approach.
I suppose they could expose the cover of the conduit body but I am not sure what that accomplishes beyond creating a more likely place to fail.


Greg Fretwell
Re: De-icing & snow melting equip #98044
04/30/06 10:28 AM
04/30/06 10:28 AM
A
Alan Nadon  Offline
Member
Joined: Mar 2005
Posts: 399
Elkhart, IN. USA
George,
check 426.22 (NEC2002) The type of leads makes a diference about needing conduit or not. Splices with a direct burial coating would IMHO be accepted.
The buried conduit could be a Code violation if you look at 426.3
Also check 426.24 B and the reference to 300.15

Most installers are not aware of the requirement of 426.13. A warning sign must be posted to keep some contractor from cutting the concrete when the heat is turned on.
Alan--


Alan--
If it was easy, anyone could do it.

Featured:

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

 

Member Spotlight
richard
richard
L.I. New York
Posts: 95
Joined: August 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
Popular Topics(Views)
248,160 Are you busy
185,635 Re: Forum
174,999 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.023s Queries: 14 (0.005s) Memory: 0.9600 MB (Peak: 1.0924 MB) Zlib enabled. Server Time: 2018-07-22 16:01:00 UTC