SWA with copper grinning/shining thro cores along length
 

Image is of SWA cable, BASEC approved.
http://tinypic.com/r/2j1lamr/3

Brown, Blue & Grey insulated cores show the copper "grinning through"
to the extent of being shiny at regular intervals along the cable.
Black & Gr/Ye insulated cores show marks, but no copper "grinning
through". Depending on where you exposed the bedding you would not
know, however the idea is the cores are *continuously insulated* -
oddly enough.

Yes it will probably pass a 1kV IR test.
Yes most face the inside of the bedding, rather than facing the armour
- but not all do.

Sigh.

SWA with copper grinning/shining thro cores along length
 

js.b1 wrote:
Image is of SWA cable, BASEC approved.
http://tinypic.com/r/2j1lamr/3

Brown, Blue & Grey insulated cores show the copper "grinning through"
to the extent of being shiny at regular intervals along the cable.
Black & Gr/Ye insulated cores show marks, but no copper "grinning
through". Depending on where you exposed the bedding you would not
know, however the idea is the cores are *continuously insulated* -
oddly enough.

Yes it will probably pass a 1kV IR test.
Yes most face the inside of the bedding, rather than facing the armour
- but not all do.

I think I would be looking to the supplier to replace that!

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

SWA with copper grinning/shining thro cores along length
 

On Aug 11, 5:45*pm, John Rumm wrote:
I think I would be looking to the supplier to replace that!

Indeed, the cable is actually worse than the photo shows.

Unfortunately the supplier (and others) are now only carrying that
Turkish brand in smaller sizes re cost. So busy emailing around to see
what people have before I start driving around.

SWA with copper grinning/shining thro cores along length
 

On 11 Aug, 17:45, John Rumm wrote:
js.b1 wrote:
Image is of SWA cable, BASEC approved.
http://tinypic.com/r/2j1lamr/3

Brown, Blue & Grey insulated cores show the copper "grinning through"
to the extent of being shiny at regular intervals along the cable.
Black & Gr/Ye insulated cores show marks, but no copper "grinning
through". Depending on where you exposed the bedding you would not
know, however the idea is the cores are *continuously insulated* -
oddly enough.

Yes it will probably pass a 1kV IR test.
Yes most face the inside of the bedding, rather than facing the armour
- but not all do.

I think I would be looking to the supplier to replace that!

--
Cheers,

John.


It looks like product-recall territory to me.

SWA with copper grinning/shining thro cores along length
 

Tomorrow, weather permitting, I will examine more of the cable.
- I have 4m buried, easy to pull up in flexible conduit
- I have offcuts from both ends

Recall? Trading Standards?
- Actually no, I think it is a matter for BASEC to comment on
- If I find the problem repeats along the whole cable I will email
them

I've got used to odd quirks - such as armour layups.
Armour i) coverage measures to be 70% rather than 90% of bedding o.d.
and ii) laid in such a manner as to leave a spiral band without armour
so point penetration over a 4-5mm circumference would not actually
contact armour.

However insulation with copper grinning through spoils your day with
*buried* SWA.
If I had only removed a little bedding (10cm) I would have never been
the wiser.

I note Screwfix still sell "Prysmian" branded FTE & SWA (altho not
5c), so still possible to walk-in and get Good Stuff.
That said I still do not understand why Screwfix do not carry (say)
25m of 50-68mm underground twinwall electrical ducting (best) or non-
perforated land drain (usable). Not much bigger than their piles of
water supply pipe. Creates an SWA-upgrade market when someone finds
17th requires 3% VD for lighting and everyone sized to just scrape
under 4% for 16th regs :-) Yes I know regs are not retrospective, but
that doesn't stop 'em trying!

SWA with copper grinning/shining thro cores along length
 

In article ,
"js.b1" writes:
Creates an SWA-upgrade market when someone finds
17th requires 3% VD for lighting and everyone sized to just scrape
under 4% for 16th regs :-) Yes I know regs are not retrospective, but
that doesn't stop 'em trying!

Reminds me -- had a scare-style flyer from the local former
electricity board _warning_ householders that their wiring
might not conform to 17th Ed regs, and they'd come and check
it if you asked.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

SWA with copper grinning/shining thro cores along length
 

On Aug 13, 10:25*am, (Andrew Gabriel)
wrote:
Reminds me -- had a scare-style flyer from the local former
electricity board _warning_ householders that their wiring
might not conform to 17th Ed regs, and they'd come and check
it if you asked.

Can *we* send one to the former electricity boards?

"Warning - electricity boards have electrical supply infrastructure
that does not conform to ESQC, such as supplying properties from a
neighbour's cutout and junctions under driveways" :-)


Posted it to BASEC, will report if anything interesting.
I got some TF Kable (TeleFonika) from Edmundson which was perfect

Screwfix advertise Prysmian SWA (& FTE 6242H & 6242BH) so it is easy
to get "known stuff" on the highstreet.