ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Recent Posts
Elk’s Lodge 11th hour ritual chime clock
by lemahj - 09/26/23 10:24 AM
Strange breaker tip problem
by gfretwell - 09/25/23 08:13 PM
An impossible Support Violation
by gfretwell - 09/12/23 04:29 PM
How are you Jersey folks about the windmills?
by gfretwell - 09/08/23 02:21 PM
Having trouble logging in?
by Admin - 09/01/23 10:26 AM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 23 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#51415 04/29/05 02:02 AM
Joined: Dec 2003
Posts: 524
... A customer told me of an interesting way of "doctoring" up old cloth covered wire..He said that some time ago,an electrician was working at his home and came across the cracked,frail,frayed wires in a box,and instead of just taping them up,used an ordinary drinking straw,which he simply covered over the offending,denuded wire,and some kind of polymer that had two parts,much like epoxy does,and a syringe-like applicator with which he "injected" the polymer into the straw,waited a few minutes,removed the straw,and ...voila,..a new pliable,flexible rubber/latex insulation covering for the wire...Has ANYONE here heard of such a thing?? The guy who told me this is a Dentist,and explained the process explicitly so I believe he wasn't making it up...I just never heard of this type of agent for this type of application... Help!! [Linked Image] [Linked Image]

.."if it ain't fixed,don't break a Licensed Electrician"
#51416 04/29/05 03:46 AM
Joined: Jul 2002
Posts: 8,443
Likes: 3
That's a rather interesting concept.
However, doing a thing like this would mean that you would have to make sure that the wire concerned was absolutely straight, to be in the middle of the insulation.
Personally, I'd replace any wire like that if the insulation was that bad on it, you don't know what the rest of it in the walls/attic is like.
Good idea though.

#51417 04/29/05 06:18 AM
Joined: Mar 2005
Posts: 88
it was a dentist who gave you this idea? maybe he is making his crowns the same way? Look out for the root canal...

#51418 04/29/05 09:15 PM
Joined: Jan 2005
Posts: 5,411
Likes: 1
Cat Servant
I expect that what the dentist really saw was the use of "cold" shrink tube, which has a liner removed to 'shrink' it.

#51419 04/30/05 04:20 AM
Joined: Feb 2005
Posts: 693
How about a much simpler, faster, and cheaper method?

Simply slide a section of insulation stripped from a piece of one-size up (i.e., use new #12 insulation for old #14 wire) right over the stripped old wire. New insulation, and your choice of colors to boot.

After sliding the insulation as far as you can, trim the excess and strip a little bit less than usual, grip the tip of the wire with your Kleins, and push the insulation farther into the old sheath.

This will avoid a possible short where the old wires enter the box and pass through the cable clamp. Typically, only the stripped portion crumbles and falls off. There's no need to replace an entire run.

Larry Fine
Fine Electric Co.
#51420 04/30/05 08:24 AM
Joined: Dec 2003
Posts: 524
... Yeah, Larry,..I've done it that way,..seems to be the best/easiest way...If there's enough slack,I've even cut back on the old BX casing and found the wires to be in perfect condition,like the day they were made...1800 years ago,complete with the beeswax cloth wrapping..I'm gonna try shrink tubing next,as I run into this alot,and want to find an effective way of dealing with it..

.."if it ain't fixed,don't break a Licensed Electrician"

Link Copied to Clipboard

Tools for Electricians
Tools for Electricians

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
* * * * * * *

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


Member Spotlight
Anaheim, CA. USA
Posts: 2,722
Joined: October 2000
Top Posters(30 Days)
lemahj 1
Popular Topics(Views)
311,169 Are you busy
237,542 Re: Forum
221,306 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5