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Topic Title: Black and White T&E?
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Created On: 28 January 2013 05:28 PM
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 28 January 2013 05:28 PM
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misterben

Posts: 415
Joined: 11 June 2007

Hi all,

I came across some black and white T&E on a recent job, does anyone know what it is ?

regards
Misterben
 28 January 2013 05:42 PM
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Avatar for OMS.
OMS

Posts: 19747
Joined: 23 March 2004

Is it actually T&E (as in oval construction) - Black, White and earth suggests american or made for american market to me.

It may have come in via middle east (potentially manufactured by DuCab)

failing that, it's perhaps a left-over from a minstrel show

Regards

OMS

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Failure is always an option
 28 January 2013 05:48 PM
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rocknroll

Posts: 8878
Joined: 03 October 2005

failing that, it's perhaps a left-over from a minstrel show


LOL

regards

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"Take nothing but a picture,
leave nothing but footprints!"
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"Oh! The drama of it all."
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"You can throw all the philosophy you like at the problem, but at the end of the day it's just basic electrical theory!"
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 28 January 2013 06:50 PM
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misterben

Posts: 415
Joined: 11 June 2007

This was the kind of job that had been 'interfered' with, therefore doesnt surprise me that it was probably obtained on the cheap!

regards
Misterben
 29 January 2013 08:28 AM
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broadgage

Posts: 1308
Joined: 07 August 2007

Yes, almost certainly American, or intended for the American market, and probably not a UK metric size conductor.

Commonly called "romex" though AFAIK that is in fact a trade name and not a type of cable.

Not very good practice to use it in the UK on account of the non standard colour code, but not actually probibited provided that the terminations are correctly marked.
Probably not CE marked, but should be UL listed.

I once used this cable in a large house for emergency lights connected to a central battery system, I felt that use of black and red for AC mains and black and white for battery circuits would minmise confusion.
 29 January 2013 07:25 PM
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mark2spark

Posts: 1444
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You would think American, as the others have said. I was surprised when i learnt years ago that they used the Black for the live. We was on Black as the N at the time, old colours.

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I am prone to talking complete bol***ks at times, please accept my apologies in advance.
 29 January 2013 07:58 PM
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maltrefor

Posts: 121
Joined: 01 November 2009

What about the Italians with their old RED earths then.

Having said that last week in a property that I was testing were singles with RED and BLACK earths with a narrow GREEN stripe down them. It looked very strange with Red, Black and Green all in the same terminal!!!
 29 January 2013 08:26 PM
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peteTLM

Posts: 3187
Joined: 31 March 2005

There are hundreds, probably thousands of houses in Harlow that have red white and blue cable.

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Lack of planning on your part doesn't make it an emergency on mine....

Every man has to know his limitations- Dirty Harry
 29 January 2013 08:32 PM
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mark2spark

Posts: 1444
Joined: 15 November 2006

Originally posted by: peteTLM

There are hundreds, probably thousands of houses in Harlow that have red white and blue cable.


Isn't that Alf Garnett land

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I am prone to talking complete bol***ks at times, please accept my apologies in advance.
 29 January 2013 09:32 PM
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AncientMariner

Posts: 525
Joined: 14 December 2004

How would it be for voltage rating? Does the USA market use the same cable for both their 110 and 220v systems?

Cheers!

Clive

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Clive S Carver GCGI IEng MIET
 29 January 2013 10:33 PM
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AJJewsbury

Posts: 11553
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I was surprised when i learnt years ago that they used the Black for the live. We was on Black as the N at the time, old colours.

It makes more sense when you realise that the US don't mark the terminals with letter like we do - their tradition is to plate one terminal (N) leaving the other plain brass (L). So they just connect the white wire to the "white metal" terminal. I think old GPO overhead phone wire used a similar method (one conductor tinned, the other plain copper) to distinguish the A from B lines.

- Andy.
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