Consumer unit tails

[Doc Hudson]

????

You can get concentric and split concentric from any supplier. 

e.g.

http://www.cef.co.uk/catalogue/products/386922-25-0mm-split-concentric-cable-cut-length-sold-by-the-mtr

http://www.elandcables.com/cables/concentric-and-split-concentric-cables

Doc H.

 

[Lurch]

And split con is not allowed..... So, i would not be turning the power back on and notifying the DNO, as it was obviously stolen from them, and they will want to be turning the power off.

What are you wittering on about now? Are you having some sort of extended stroke?

Split con is allowed, the DNO don't even use it so it was not stolen from them and I have rolls of it I have purchased from the wholesalers.

I don't know why you would as it doesn't offer any particular advantage installation wise.

For larger sizes (16mm³ and up) it is a bit easier to work with as it is round so it fits through holes in joists better, and holes in general, and the holes can be a bit smaller, doesn't get snagged and twisted so much either so is easier to pull in and is easier to terminate.

Depends on the job, but it isn't "not worth it".

 

[Rob.]

For larger sizes (16mm³ and up) it is a bit easier to work with as it is round so it fits through holes in joists better, and holes in general, and the holes can be a bit smaller, doesn't get snagged and twisted so much either so is easier to pull in and is easier to terminate.

Depends on the job, but it isn't "not worth it".

Never worked with the stuff, but as I've never really had to pull cables through joists before an the fact I've worked with T+E rarely I don't know the pros an cons of using it first hand. 

Didn't think of those points.

From what I remember of it, the outer serving is as tough as old boots.

That it may be, my point was more the fact that unlike SWA, you still need to have it RCD protected in most domestic environments. 

 

[Andy™]

And split con is not allowed..... So, i would not be turning the power back on and notifying the DNO, as it was obviously stolen from them, and they will want to be turning the power off.

john...

straight con is not allowed, split con is. 2 completely different cables

 

[phil d]

straight con is not allowed, split con is. 2 completely different cables

Quite, concentric uses a live in the centre and multiple strands around the outside, these are used as a combined neutral/earth, a network cable, as you correctly stated, split concentric has the same single core in the centre, but has a number of blue insulated strands, and some bare copper ones around it, making a separate neutral and earth.

 

[Sidewinder]

Split con is to BS 7870, and is not recognised by BS7671, thus to use it is a deviation.

 

[apprentice87]

Thank you Paul...

john.. [a dull welder...]

 

[Lurch]

A deviation isn't illegal.

 

[phil d]

A deviation isn't illegal.

Quite, providing it doesn't make the installation unsafe, and you have a valid reason for doing it then all good, without deviation there would be no progress, often commonly used items started as a result of a deviation.

Take push fit connectors (wago's) for example, back in the day we were all doing joints in those horrid little round brown things with screws in, I suppose a lot of us were a bit sceptical when Wago's came on the scene, now I prefer to use them over the traditional round JB, in a suitable enclosure of course.