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#138343 - 09/02/03 01:10 PM Underground cables
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
What type of underground cables are used in your country?

The question has arose when I saw German NYY-J and French R2V for sale in Sweden.

Here is what the Swedish look like. The designation, EKKJ/FKKJ, depends on stranding but they all look the same.




German NYY-J


French R2V


What surprised me is the lack of shield in the two latter cables.

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#138344 - 09/02/03 01:25 PM Re: Underground cables
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
The most common for underground feeders within a customer's installation is SWA (armored) cable. It consists of the individual conductors within an XLPE sheath, then a layer of steel wire armor, then a final XLPE sheath on the outside:



2-core is red, black.
3-core is red, yellow, blue
4-core is red, yellow, blue, black

All are available in the standard metric conductor sizes from 1.5 sq. mm. upward.

More details at the TLC Website .


[This message has been edited by pauluk (edited 09-02-2003).]

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#138345 - 09/03/03 10:38 AM Re: Underground cables
C-H Offline

Member

Registered: 09/17/02
Posts: 1508
Loc: Stockholm, Sweden
I found a catalog from a Polish manufacturer who makes a lot of different European and American cables.
http://www.tf.com.pl/ang/produkty/export.pdf

[This message has been edited by C-H (edited 09-03-2003).]

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#138346 - 09/03/03 10:56 AM Re: Underground cables
PaulCornwall Offline
Member

Registered: 06/02/03
Posts: 112
Loc: England
Tell me my european friends out there.. do you use MICC type cable, known here in the UK as Pyro???

For all you realy old sparks there was an aluminimum version called AL-Cumic..

Not nice to work with it was so soft you couldnt work it, it just fractured.


Sorry i dont know how to submit a picture showing the cable.

[This message has been edited by PaulCornwall (edited 09-03-2003).]

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#138347 - 09/03/03 01:21 PM Re: Underground cables
pauluk Offline
Member

Registered: 08/11/01
Posts: 7693
Loc: Norfolk, England
Paul (& Everybody),
If the image you want to post is stored on the web, you can include it with the appropriate UBB code in your message. Details on how to do this are in the ECN FAQ .

Otherwise, just e-mail your image(s) to Bill or myself and we'll put them on ECN's server for you.

photos@electrical-contractor.net or paulcoxwell@aol.com


[This message has been edited by pauluk (edited 09-03-2003).]

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#138348 - 09/03/03 02:58 PM Re: Underground cables
PaulCornwall Offline
Member

Registered: 06/02/03
Posts: 112
Loc: England
Thanks for that Paul

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#138349 - 09/05/03 08:15 AM Re: Underground cables
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
C-H,
Over here,
Neutral-Screened is invariably used as a medium for our U/G services.
It saves having to muck around with putting a length of TPS in conduit, which in turn has to be de-rated.
Sorry but I can't get a pic of a piece of N/Screened at the moment.
Over here, this cable has an outer sheath of 3.2mm thick PVC and it can be buried direct, without further Mechanical protection, provided that it is buried at Regulation depth (600mm).
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

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#138350 - 09/07/03 09:46 PM Re: Underground cables
Pinemarten Offline
Member

Registered: 08/23/03
Posts: 122
Loc: Edmonton, AB, Canada
We have two main types in Canada. NMWU and ACWU. non-metallic wet underground, and armoured cable wet underground. The armour isn't needed after certain depths depending on the ground usage (driveway, road, etc.)
Main supplies are usually single conductor in PVC conduit or ACWU ('Teck') which costs more.
The non-metallic just has a heavier insulation than our 'indoor' NMD, non-metallic dry.

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