SWA For meter tails?

[Msitekkie]

I need to upgrade my meter tails to 25mm. The existing tails pass along under the pebble dash in plastic conduit (which would be too small), then apparently at an angle through the porch structure (unprotected) then turn sideways into a void & up the void to CU.

I have seen other posts where the use of SWA is suggested but I haven't actually seen SWA with 25mm cores. "25mm SWA" appears to be 25mm "Outside diameter", so I presume that means the cores are smaller.

Any suggestions as to the best approach welcomed. I actually think I will struggle with getting SWA through anyway even if it does exist with suitable cores, because of the bends involved.

NB The meter box is under the window of the house rather than on the side of the porch, but the void inside the porch is set back behind the run of the outside wall so it's not possible to drill directly through the outside porch wall into it.

 

[Rpa07]

‘A voice in the wilderness’
- @Spoon you get PMs from your ‘special’ friend @SWD so don’t go playing that tiny violin anywhere near us!

 

[Spoon]

‘A voice in the wilderness’
- @Spoon you get PMs from your ‘special’ friend @SWD so don’t go playing that tiny violin anywhere near us!

But I have to pay him to talk to me....
and he didn't even send me a PM.....

 

[Rpa07]

It still counts, no one thinks less of you (well, less than they do now anyway!)

But I have to pay him to talk to me....
and he didn't even send me a PM.....

 

[Rpa07]

I think there may have been too many megabytes to send what he intended across the t’internet! Eeewh!

But I have to pay him to talk to me....
and he didn't even send me a PM.....

 

[Spoon]

I think there may have been too many megabytes to send what he intended across the t’internet! Eeewh!

If he's sending d*ck pics then the pics would be very small...

 

[littlespark]

Someone sending pics of ducks?

 

[Spoon]

Someone sending pics of ducks?

yep, very small ones..

 

[littlespark]

Here's a pic of a huge d*ck

 

[7029 dave]

Meter tails SWA?, are running a sub to the CU.?That makes more sense.

 

[Msitekkie]

Sorry for the slow reply to everyone. Been out for my daughters birthday. To answer some of the questions the DNO is due to come to upgrade my main fuse to 100A (extension project including an induction hob) so the tails to the CU need upgrading 1st. Did diversity calcs and I'm struggling to get it down to 100A actually.
I did have a DP isolator switch fitted by my provider in anticipation, so no seals being broken, but I'm not sure that it's fused...
I'm hoping it's less than 3m, but it's fairly close, so need to measure again when I know how I'm routing the cable.

 

[Msitekkie]

I wonder how the cable conductors will be enclosed or the cable glanded for that matter.

Yes I was wondering about cable enclosure if I don't use SWA. Seemingly 25mm Conduit can be used, according to the cable factors.
16mm factor = 145
25mm Cable factor = 217 2x217 = 434
Total = 589
But I can't quite see how two 25mm cables fit in a 25mm pipe? Maybe something about the size of the cable I'm missing as I don't actually have any 25mm tails.

 

[Ian1981]

Sorry for the slow reply to everyone. Been out for my daughters birthday. To answer some of the questions the DNO is due to come to upgrade my main fuse to 100A (extension project including an induction hob) so the tails to the CU need upgrading 1st. Did diversity calcs and I'm struggling to get it down to 100A actually.
I did have a DP isolator switch fitted by my provider in anticipation, so no seals being broken, but I'm not sure that it's fused...
I'm hoping it's less than 3m, but it's fairly close, so need to measure again when I know how I'm routing the cable.

The DNO May allow 5 meters
My local DNO really don’t care when you ask them about max length of tails they will allow , protected by their fuse.
Very helpful!

 

[Ian1981]

Yes I was wondering about cable enclosure if I don't use SWA. Seemingly 25mm Conduit can be used, according to the cable factors.
16mm factor = 145
25mm Cable factor = 217 2x217 = 434
Total = 589
But I can't quite see how two 25mm cables fit in a 25mm pipe? Maybe something about the size of the cable I'm missing as I don't actually have any 25mm tails.

Don’t forget the earthing conductor

 

[Msitekkie]

Why do the tails need rewiring? What is the Earthing system?

My main fuse is due to be upgraded to 100A due to an extension project that involves an induction hob. Actually with my diversity calcs, I'm struggling to get it down to 100...

 

[Msitekkie]

What is the Earthing system?

TN-CS