Wago connector with 0.75mm braided cable

[blup]

Hi all
I am building a spider light with 7 outputs.
So I need to join the switched supply to 7 lots of cable. This cable is 0.75mm braided cable.
I was intending to use 2 of 773-108 24A 8-Way Push-Wire Connectors but just saw that it only accepts 1.5mm braided cable.

Is there an alternative method ( dont really want to use choc blox and loop outs) or could i "fold over the cable" and solder it to make it 1.5mm?
Or could I twist 2 of the 0.75mm together and put in one connector?

Thanks in advance

Use a nice fat ferrule, plenty of cheap kits on amazone

 

[JohnW2]

Use a nice fat ferrule, plenty of cheap kits on amazone

I've often wondered about ferrules. Whilst the idea seems quite good, they effectively result in the creation of an extra 9'unnecessary') 'joint' in the current path (between the conductor and the ferrule) - which, in other contexts, would not necessarily be regarded as a particularly good ida.

As so often , there are swings and roundabouts involved!

 

[EFLImpudence]

Further to my previous post.

I have just noticed the comments related to this and OP mentioning twisting two 0.75mm².
I find it difficult to accept that some stranded is not stranded.

 

[sparkwright]

I've often wondered about ferrules. Whilst the idea seems quite good, they effectively result in the creation of an extra 9'unnecessary') 'joint' in the current path (between the conductor and the ferrule) - which, in other contexts, would not necessarily be regarded as a particularly good ida.

As so often , there are swings and roundabouts involved!

I fitted a fancy light fitting with many wires pre-wired to ferrules.
The wires to the lampholders all fell out of the ferrules whilst up a ladder fitting it.
**Embarrassing**.

 

[blup]

I've often wondered about ferrules. Whilst the idea seems quite good, they effectively result in the creation of an extra 9'unnecessary') 'joint' in the current path (between the conductor and the ferrule) - which, in other contexts, would not necessarily be regarded as a particularly good ida.

As so often , there are swings and roundabouts involved!

The main advantage to me as a diyer is that I know all the thin stranded wire will be enclosed within the ferrule and therefore maximise the ccc of the flex, as well as significantly reducing the likelihood of the wires being severed under compression from the terminal screw.

 

[JohnW2]

I fitted a fancy light fitting with many wires pre-wired to ferrules. The wires to the lampholders all fell out of the ferrules whilst up a ladder fitting it.
**Embarrassing**.

"QED" ! ...
... in your case, it appears that all the 'unnecessary joints" failed

 

[JohnW2]

The main advantage to me as a diyer is that I know all the thin stranded wire will be enclosed within the ferrule and therefore maximise the ccc of the flex, as well as significantly reducing the likelihood of the wires being severed under compression from the terminal screw.

Yep, that's the 'upside' ('swings'), for both DIYers and electricians. However, the downside ('roundabouts') is that (as just illustrated by sparkwright), is that one thereby introduces additional 'joints' which may, themselves, fail.

 

[blup]

Yep, that's the 'upside' ('swings'), for both DIYers and electricians. However, the downside ('roundabouts') is that (as just illustrated by sparkwright), is that one thereby introduces additional 'joints' which may, themselves, fail.

Does it introduce a new joint or enhance an existing one?

 

[JohnW2]

Does it introduce a new joint or enhance an existing one?

Well, the current has to travel from the conductor to the ferrule, then from the ferrule to the terminal, That sounds like two 'joints' to me, one more thn if the conductor went straight into the terminal

However, the question is whether the electrical connection between conductor and terminal is more or less reliable with an intervening ferrule than without one - and that is the ('uncertain') issue which is being discussed.

 

[blup]

Well, the current has to travel from the conductor to the ferrule, then from the ferrule to the terminal, That sounds like two 'joints' to me, one more thn if the conductor went straight into the terminal

However, the question is whether the electrical connection between conductor and terminal is more or less reliable with an intervening ferrule than without one - and that is the ('uncertain') issue which is being discussed.

That argument can also be applied to the individual strands of the “wire” so that there are as many joints as there are strands. A better approach might be to say that - properly applied - the ferrule and stranded wire create a single (maintenance free) joint.

 

[JohnW2]

You seem to be arguing for the sake of arguing I was not asserting anything, merely indicating that I have often 'wondered' about the swings and roundabouts of ferrules (as well as crimping techniques more general)ly.

That argument can also be applied to the individual strands of the “wire” so that there are as many joints as there are strands.

Yes, 1but multiple joints in parallel does notr raise the same concerns as two (or more) in series.

A better approach might be to say that - properly applied - the ferrule and stranded wire create a single (maintenance free) joint.

One might say that, much the same as one might try saying it about a crimped joint- but I have similar reservations about them. In both cases, its fine if the crimping (between cable and ferrule'perfect', and remains 'perfect'.

If the conductor were also (as well as being 'crimped') soldered, brazed or welded to the ferrule (or crimp), those uncertainties would be much reduced (but I suppose someone will have nothing better to do than start talking about 'cold welding' )

 

[blup]

You seem to be arguing for the sake of arguing I was not asserting anything, merely indicating that I have often 'wondered' about the swings and roundabouts of ferrules (as well as crimping techniques more general)ly.

Yes, 1but multiple joints in parallel does notr raise the same concerns as two (or more) in series.

One might say that, much the same as one might try saying it about a crimped joint- but I have similar reservations about them. In both cases, its fine if the crimping (between cable and ferrule'perfect', and remains 'perfect'.

If the conductor were also (as well as being 'crimped') soldered, brazed or welded to the ferrule (or crimp), those uncertainties would be much reduced (but I suppose someone will have nothing better to do than start talking about 'cold welding' )

I was wondering in response to your posts, not wandering.

 

[JohnW2]

I was wondering in response to your posts, not wandering.

I wasn't really accusing you of wandering, but you did seem to be challenging all of my 'wonderings'

As I see it, and given that I'm pretty sceptcal about 'cold welding'. I suspect that the same processes (e.g. 'thermal cycling') that can theoretically result in loosening of screwed connections may well sometimes also operate in the case of crimped ones (including crimped ferrules). However, as said, that is simply 'wondering' on my part.

 

[blup]

I wasn't really accusing you of wandering, but you did seem to be challenging all of my 'wonderings'

As I see it, and given that I'm pretty sceptcal about 'cold welding'. I suspect that the same processes (e.g. 'thermal cycling') that can theoretically result in loosening of screwed connections may well sometimes also operate in the case of crimped ones (including crimped ferrules). However, as said, that is simply 'wondering' on my part.

Your thermal cycling point is an interesting theory. To combat that I found learning how to properly tighten terminal screws was key to maintaining long term connections. That and keeping all the copper conductors under the tip of the screw so they are not displaced when achieving the required torque.

 

[JohnW2]

Your thermal cycling point is an interesting theory. To combat that I found learning how to properly tighten terminal screws was key to maintaining long term connections. That and keeping all the copper conductors under the tip of the screw so they are not displaced when achieving the required torque.

Yes, all agreed - and, in any event, I have to say that I have personally only very very rarely come across screwed connections which have become loose during very long-term use.

However, with screwed terminals, one at least has the ability to try to optimise the 'tightening process' in the fashion you suggest (probably involving some early 're-tightening') - whereas with crimped joints one is largely at the mercy of whatever is going on, unseen, inside the crimp.