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
0 members (), 61 guests, and 19 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Oct 2000
Posts: 3,669
Likes: 2
Admin Offline OP
Administrator
Member
Quote
Hi,

Can someone provide identification and/or additional information for this material, found at the basement ceiling in a Park Ridge IL House built (according to tax records) 1944/45? - it's a bit different from any K&T wiring method/material I have encountered previously, and I'd like to precisely identify it in my report..


Michael T.

[Linked Image from electrical-photos.com]

[Linked Image from electrical-photos.com]

Joined: Oct 2006
Posts: 745
E
Member
That looks like a K&T transition to a box. The loom is placed over the individual conductors before they enter a box. I seriously doubt that is was installed in 1944/45 though. They were using BX and even non-grounded Romex at that time.

Not to mention, hasn't the Chicago area (union) always required that wiring be in conduit since the beginning of time?


---Ed---

"But the guy at Home Depot said it would work."
Joined: Aug 2007
Posts: 853
L
Member
Agreed, clearly a transition. As far as dateing.. Pre-40s', but I'm in New England and am not aware of the rest of the country at that time.

Joined: Apr 2007
Posts: 37
J
Member
There is a definite wire color difference- looks like one wire has a yellow insulation and the other is red? Seems odd.

If those are a hot and grounded conductors I was under the impression that there needed to be more separation and they can't be on the same knob, which was why cleats were used.

Joined: Aug 2007
Posts: 853
L
Member
Perhaps a switch leg? Explaining the same insulator.
Asfar as color, I have seen alot of this with the later K&T.
Shortly before the transition to cables.

Joined: Feb 2002
Posts: 2,233
H
Member
That is old K&T wiring. As stated the loom was used when the single conductor wire turned corners. When wire was run in a straight line paralel to the floor joist, the K&T would rest under the individual knobs or when the crossed through the beams then the ran in the tubes. When you were running from the ceiling and wanted to turn down a wall. They electrician would slide the loom over the single 14 ga RH wire. It prevent the wire from chafing on the wooden beams. Here in northern NJ there is still a lot of K&T wiring in homes around here. Also as stated the loom would protect the singel strand wire when it entered a box.

Joined: Sep 2006
Posts: 41
C
Member
Originally Posted by EV607797


Not to mention, hasn't the Chicago area (union) always required that wiring be in conduit since the beginning of time?


I remember that too. K&T was mostly prevalent out West after the 30's. However, judging by the fact that the wire spacing is not to code, even by early K&T standards, and 2 wires on 1 knob, I vote this is an old homeowner hack job.

Joined: Apr 2002
Posts: 7,283
Likes: 3
Member
Two (2) wires on 1 knob? They are designed/mfg for two (2) conductors.

As mentioned above, 'loom' was used at box entry points, and the conductors would have to be closely spaced to enter a device box; hence the 'loom'!

What 'code' are you referencing for wire spacing?



John

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
The_Lightman
The_Lightman
Orlando, Fl, USA
Posts: 49
Joined: August 2001
Top Posters(30 Days)
Admin 3
dsk 2
Popular Topics(Views)
286,510 Are you busy
218,934 Re: Forum
205,020 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5