Meter tails at 25mm!

[Plonker 3]

Are the tails solid copper?

Multi core cable refer to where there is more than one conductor enclosed in a sheath, so cables such as T&E, SWA etc

 

[Andy78]

Sorry.

With all the excitement, I ended up taking the picture to the wrong cables.

The correct cables are above the DNO 100A fuse and are grey and same size which is 10mm by the way.

Regards,
Albert

How can a level 3 trainee not know the difference between cross sectional area and outside diameter ?

 

[Carlos Arruda]

In second pic definitely looks like 25mm tails too

Are we talking 25mm, 2.5cm CSA?

Resu, there's the ruler right next to it showing it's a 10mm, 1cm.

Apologies if I am missing something.

Regards,
Albert

 

[Carlos Arruda]

Do you know the size of your incoming fuse?

You mean on the DNO side?

100A

 

[Resu]

Are we talking 25mm, 2.5cm CSA?

Resu, there's the ruler right next to it showing it's a 10mm, 1cm.

Apologies if I am missing something.

Regards,
Albert

CSA is cross sectional area (not including sheath), what you have measured is the diameter including the sheath. Looking at those pictures I would put money on those being 25mm.

 

[Resu]

CSA is cross sectional area (not including sheath), what you have measured is the diameter including the sheath. Looking at those pictures I would put money on those being 25mm.

For example if you cut one of the tails and looked at it end on you would be looking at an area or 25mm2 of copper.

 

[Leesparkykent]

Trying to tell by the ruler but it looks slightly over 10mm? More like 11mm

 

[Resu]

And to add:

Point 3: you will not get a 25mm tail into a domestic boards's neutral bar.

Point 4: a domestic board incorporates a 100A double pole switch (the main switch). These will easily take 25mm tails.

 

[Carlos Arruda]

How can a level 3 trainee not know the difference between cross sectional area and outside diameter ?

Andy,

I must have been sleeping throughout the whole three years.

Being a father of 2 toddlers and holding a full time job, is a huge commitment as some well know.

I get what you are saying, but until now, and thanks to your comment, an eye opener, that I realize the error of my way.

I guess when one looks at a cable that looks like 1.0mm and 2.5mm (CSA) the assumption was there that these were in fact 1.0mm and 2.5mm thick.

Many thanks.

Regards,
Albert

 

[Carlos Arruda]

Trying to tell by the ruler but it looks slightly over 10mm? More like 11mm

You are correct.

So what would one say the cable itself is? 9.0mm? If removing the sheathing!

 

[Carlos Arruda]

Multi core cable refer to where there is more than one conductor enclosed in a sheath, so cables such as T&E, SWA etc

I got it mixed up with stranded cable mate, sorry.

 

[Leesparkykent]

You are correct.
So what would one say the cable itself is? 9.0mm? If removing the sheathing!

Nominal Overall Diameter of 16mm double insulated tails is roughly 9.75mm

Nominal Overall Diameter of 25mm double insulated tails is roughly 11.5mm

 

[Carlos Arruda]

Apologies to all for the CSA / diameter confusion.

I am utterly letting myself down and my tutors also.

Pretty sure this was mentioned in the class at some point.

I just got so used to thinking 1.0mm, 1.5mm and 2.5mm CSA as being it's width, that lead to all this confusion.

Many thanks to all that offered their comments, views and/or opinions.

Always learning.

I fell that the changing of ideas here on the forum, the typing of all the materials, sources of info and regulations is priceless and helps so much more. Undoubtedly a great addition of information to add to that of the classroom.

Thanks everybody.

Apologies if I was in any way a tad out of order.

Regards,
Albert

 

[Leesparkykent]

Apologies to all for the CSA / diameter confusion.

I am utterly letting myself down and my tutors also.

Pretty sure this was mentioned in the class at some point.

I just got so used to thinking 1.0mm, 1.5mm and 2.5mm CSA as being it's width, that lead to all this confusion.

Many thanks to all that offered their comments, views and/or opinions.

Always learning.

I fell that the changing of ideas here on the forum, the typing of all the materials, sources of info and regulations is priceless and helps so much more. Undoubtedly a great addition of information to add to that of the classroom.

Thanks everybody.

Apologies if I was in any way a tad out of order.

Regards,
Albert

Not at all mate, every day is a school day.

 

[Carlos Arruda]

Would it be normal practice, on a TN-C-S system, to see 3 CPC cables coming out of the DNO side?

The cables in question look like 4.0mm (CSA) stranded.

Why not use one cable of a greater CSA?


P.S: Please note this is not in relation to the pictures posted. I have seen this on a friends house who want's their C.U. changed. I have mentioned this change on another post.