ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
It's been an interesting career
by Marienauripod - 05/23/22 12:21 AM
Run Cap subsitution question. Two vs. one
by LarryC - 05/20/22 09:01 PM
Material shortages???
by NORCAL - 05/02/22 04:12 PM
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 (), 43 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#169240 09/29/07 01:34 PM
Joined: Sep 2007
Posts: 2
J
jak Offline OP
New Member
Hi,
Searched high and low.
Could someone please verify the following 'Imperial' 'stranded' cable conductor dimensions.
Uk circa 1968, 1966 14th Edition I believe. 2+E PVC insulated & Sheathed.
Particularly the CPC values.
--------------------------------------------
Phase : 7 x 0.029" diam. CPC : 3 x 0.036" diam. Is this correct? or was the CPC 3 x 0.029" If it isn't too much trouble, could someone please check by reference?

I have measured the old stuff using micrometer, but unfortunately mislaid the notes for this cable.
I am sure CPC was 3 x 0.036" but have been thrown by some possibly vague posts elsewhere on the web.

Many thanks,
Jak

Joined: Sep 2007
Posts: 2
J
jak Offline OP
New Member
Ok, sorted.
Found more cable, accurately measured diameters of cpc 0.036" x 3 strands equates to 1.98mm² CSA.
-

Joined: Aug 2001
Posts: 7,520
P
Member
Hello jak, and welcome to the forum.

I'm pretty sure that the 13th and/or 14th editions had a table showing the ECC (Earth Continuity Conductor, the then-current term) sizes for T&E cable. I'll try and find it later and scan.

We already have this table of Imperial cable current ratings from the 14th edition on the site, but it doesn't include ECC/CPC sizes:

https://www.electrical-contractor.net/pc/IEE1966_T3.JPG

Joined: Aug 2001
Posts: 7,520
P
Member
Here you go -- From the 14th edition, 1966:

https://www.electrical-contractor.net/pc/IEE1966_TableD2.jpg

Joined: Jul 2007
Posts: 19
I
Member
7/029 was imperial equivalent of 2.5mm
7/036 was imperial equivalent of 4.0mm

Joined: Aug 2001
Posts: 7,520
P
Member
The full range of smaller Imperial sizes for current-carrying conductors, with metric equivalent to two decimal places:

1/.044 = 0.97 sq. mm
3/.029 = 1.29
3/.036 = 1.94
7/.029 = 2.90
7/.036 = 4.52
7/.044 = 6.45
7/.052 = 9.35
7/.064 = 14.52

And to one decimal place:

19/.044 = 19.4
19/.052 = 25.8
19/.064 = 38.7
19/.083 = 64.5
37/.072 = 96.8
37/.083 = 129.0
37/.103 = 193.6


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
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 811
Joined: April 2004
Top Posters(30 Days)
LarryC 3
NORCAL 2
Popular Topics(Views)
291,336 Are you busy
223,828 Re: Forum
209,228 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5