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U.S. Romex vs. U.K. "Twin & earth" #123604
04/15/06 10:01 AM
04/15/06 10:01 AM
pauluk  Offline OP
Joined: Aug 2001
Posts: 7,520
Norfolk, England
For comparison -- A piece of American 12-2 w/ground Romex and a piece of British 6242Y 2.5 sq. mm. T&E (with reduced-size ground wire):

[Linked Image]
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[Linked Image]

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Tools for Electricians:
Re: U.S. Romex vs. U.K. "Twin & earth" #123605
04/15/06 02:45 PM
04/15/06 02:45 PM
NORCAL  Offline
Joined: Sep 2002
Posts: 882
The "Twin & Earth" cable looks closer to UF cable IMO.

Re: U.S. Romex vs. U.K. "Twin & earth" #123606
04/15/06 03:14 PM
04/15/06 03:14 PM
Joined: Mar 2004
Posts: 251
Kingwood, TX USA
T & E cable would make good switch legs here in the US, no re-identifing the white. LOL

Re: U.S. Romex vs. U.K. "Twin & earth" #123607
04/15/06 03:32 PM
04/15/06 03:32 PM
wa2ise  Offline
Joined: Nov 2002
Posts: 787
Oradell NJ USA
Could you legally use the British "romex" in the USA? If it's listed or approved by the revalent British agnecy, is that good enough, or does the NEC require that the agency be an American outfit?

Re: U.S. Romex vs. U.K. "Twin & earth" #123608
04/15/06 06:39 PM
04/15/06 06:39 PM
Larry Fine  Offline
Joined: Feb 2005
Posts: 693
Richmond, VA
I'd love to have some of that wire for DC circuits and switch loops! I have a feeling that the reduced GEC would be an issue. Is it available with a full-sized earth?

Yes, it looks like UF. Are all y'all (that's plural for "y'all") aware that the Klein NM strippers also work very well on UF?

These guys:

Larry Fine
Fine Electric Co.
Re: U.S. Romex vs. U.K. "Twin & earth" #123609
04/15/06 07:17 PM
04/15/06 07:17 PM
briselec  Offline
Joined: Dec 2005
Posts: 141
Brisbane, Australia
I'm amazed that they both have solid earths. I don't think we have ever used solid earths in Australia. Stranded is much less likely to snap off at terminations. Stranded conductors are pretty much the norm here for everything except domestic light circuits. Much easier to work with and less likely to break.
If you use single insulated wires in conduit runs are they solid too? That's when you really notice how much easier stranded is to use.

[This message has been edited by briselec (edited 04-15-2006).]

Re: U.S. Romex vs. U.K. "Twin & earth" #123610
04/15/06 07:36 PM
04/15/06 07:36 PM
iwire  Offline
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
We use solid up to 10 AWG (40 amp capacity if that helps on the size)

All our NM 10 AWG and smaller is solid.

Snapping is not a problem and I like to work with solid.

Cables 'push' a lot farther when solid than when stranded.

Bob Badger
Construction & Maintenance Electrician
Re: U.S. Romex vs. U.K. "Twin & earth" #123611
04/15/06 08:24 PM
04/15/06 08:24 PM
electure  Offline

Joined: Dec 2000
Posts: 4,275
Fullerton, CA USA
The T&E's conductors appears to be slightly smaller in diameter than the #12s. But still larger than #14. Like a #13

Is the ampacity between 15-20 Amps?

Re: U.S. Romex vs. U.K. "Twin & earth" #123612
04/16/06 03:13 AM
04/16/06 03:13 AM
briselec  Offline
Joined: Dec 2005
Posts: 141
Brisbane, Australia
Cables 'push' a lot farther when solid than when stranded

Yes but pulling is a lot easier with stranded.

Re: U.S. Romex vs. U.K. "Twin & earth" #123613
04/16/06 06:33 AM
04/16/06 06:33 AM
uksparx  Offline
Joined: Apr 2005
Posts: 47
What I'd like to know from you guys over the pond is why do you have all that "paper" stuffed into your cables? I have seen it many times and wondered.

In answer to the ampacity of 2.5mm T&E, it is rated at around 20Amps. The actual current depends on the conditions it is installed under e.g. in thermal insulation or in free air.

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