Curious white twin and earth

[blup]

Are they? In what way?

There is certainly no requirement that any conductor shall be a single core.

Easier to miss a few strands when terminating

 

[crystal ball]

Easier to miss a few strands when terminating

10mm solid would be nice to install

 

[Harry Bloomfield]

Easier to miss a few strands when terminating

On a flex, perhaps, but it would be a seriously poor job, if the total strands were 3, 7, or 19.

 

[blup]

One a flex, perhaps, but it would be a seriously poor job, if the total strands were 3, 7, or 19.

My mistake I thought the OP’s 2.5 was flex

 

[crystal ball]

My mistake I thought the OP’s 2.5 was flex

Despite the title and pics of T&E

 

[Ragnar_AT]

And that’s what ferrules are great for. They make absolutely sure you‘re not missing any strands (obviously provided you‘re using them correctly). That’s the main reason why countries that require ferrules don’t like using flex in fixed installations, crimping ferrules is a lot of extra labour.

Solid 10 mm2 and even 16 mm2 do exist and undoubtedly are a pig to work with (can confirm for 10 mm2 from personal experience).

 

[SUNRAY]

And that’s what ferrules are great for. They make absolutely sure you‘re not missing any strands (obviously provided you‘re using them correctly). That’s the main reason why countries that require ferrules don’t like using flex in fixed installations, crimping ferrules is a lot of extra labour.

10 mm2 and even 16 mm2 do exist and undoubtedly are a pig to work with (can confirm for 10 mm2 from personal experience).

Biggest ferrules I've used are 95mm² but I assume they are available to 240mm².

 

[Ragnar_AT]

Biggest ferrules I've used are 95mm² but I assume they are available to 240mm².

Certainly. I missed one important word typing my previous post and have now edited it. I was referring to solid 10 and 16 mm2 conductors, which are quite annoying. Wiring a cramped three-phase DB with solid 10 mm2 five-core isn‘t something I‘d like to do again.

 

[pete01]

You don't put ferrules on solid core cables.....do you?

 

[Harry Bloomfield]

Certainly. I missed one important word typing my previous post and have now edited it. I was referring to solid 10 and 16 mm2 conductors, which are quite annoying. Wiring a cramped three-phase DB with solid 10 mm2 five-core isn‘t something I‘d like to do again.

You might be struggling a bit then, with the 350mm three and four core armoured cables I used to chuck about

 

[Ragnar_AT]

You don't put ferrules on solid core cables.....do you?

No, certainly not. I‘m afraid I didn‘t make it clear enough that I was talking about two separate things - how to terminate flex (fine stranded conductors) safely in the first paragraph and the downsides of larger solid conductors in the second.

 

[Risteard]

You don't put ferrules on solid core cables.....do you?

No. Nor on Class 2 conductors.

 

[SUNRAY]

No. Nor on Class 2 conductors.

?

 

[pete01]

7 strands class 2.

 

[Harry Bloomfield]

?

+1