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#138343 - 09/02/03 04:10 PM Underground cables  
C-H  Offline
Member
Joined: Sep 2002
Posts: 1,497
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.

[Linked Image]


German NYY-J
[Linked Image]

French R2V
[Linked Image]

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


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#138344 - 09/02/03 04:25 PM Re: Underground cables  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
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:

[Linked Image]

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).]


#138345 - 09/03/03 01:38 PM Re: Underground cables  
C-H  Offline
Member
Joined: Sep 2002
Posts: 1,497
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).]


#138346 - 09/03/03 01:56 PM Re: Underground cables  
PaulCornwall  Offline
Member
Joined: Jun 2003
Posts: 112
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).]


#138347 - 09/03/03 04:21 PM Re: Underground cables  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
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).]


#138348 - 09/03/03 05:58 PM Re: Underground cables  
PaulCornwall  Offline
Member
Joined: Jun 2003
Posts: 112
England
Thanks for that Paul


#138349 - 09/05/03 11:15 AM Re: Underground cables  
Trumpy  Offline


Member
Joined: Jul 2002
Posts: 8,211
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

#138350 - 09/08/03 12:46 AM Re: Underground cables  
Pinemarten  Offline
Member
Joined: Aug 2003
Posts: 123
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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