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Topic Title: Authorized Aluminium Cables in Low Voltage in UK?
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Created On: 05 March 2013 04:55 PM
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 05 March 2013 04:55 PM
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Lucia

Posts: 7
Joined: 11 January 2013

Hi,

I would like to ask if someone can help me and let me know if in UK is authorized the use of Alu Cables in LV?

I still waiting to get the BS 7876:2008 per normal Post, cause there is not the possibility to buy a digital version...and I can not wait till it arrives.

Thank you very much!

Lucia
 05 March 2013 05:02 PM
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AJJewsbury

Posts: 11451
Joined: 13 August 2003

BS 7671 (I presume you mean!) prohibits the use of aluminium for conductors <16mm² - they're acceptable for larger sizes.

A digital version is available - see: http://electrical.theiet.org/w...ions/digital/index.cfm (although you might prefer the price of the paper copy).

- Andy.
 05 March 2013 05:13 PM
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OMS

Posts: 19663
Joined: 23 March 2004

You can use aluminium cables with a cross sectional area greater than 16mm2 as Andy says - although the UK and USA experience with them means they are held in wide mistrust by most in the sector.

You will need to pay particular attention to terminations (and the space required for them), increase in conductor sizes and hence containment sizes as well as other space related factors such as bending radii etc.

There may be a cost advantage in the aluminium in the short term - it's often lost when installation techniques and skilled labour for terminations are all factored in.

You can use them - but I would want very good reasons to do so, in favour of Cu.

regards

OMS

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Failure is always an option
 05 March 2013 07:57 PM
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Lucia

Posts: 7
Joined: 11 January 2013

Hi AJJewsbury and OMS,

thank you very much. Sure, I had a mistake writting the numbers of the Norm Now this point is clear, I am wondering why I can not find in the english cables catalog a for example a cable:
- 1 core cable 240mm² up 1000 V in Alu.

OMS, a good reason cause I prefer Alu instead to Cu is the price

Regards,

Lucia
 05 March 2013 08:05 PM
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OMS

Posts: 19663
Joined: 23 March 2004

OMS, a good reason cause I prefer Alu instead to Cu is the price


Indeed - but as I cautioned, that "cheap" cable may well be hellishly expensive in the long term.

In the UK Aluminium cable isn't actually that cheap as very few people are prepared to use it for systems within buildings so it doesn't have great demand.

Try websites for Eland or Batts cable if you want data on single core aluminium conductor/aluminium armour cables.

Regards

OMS

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Failure is always an option
 05 March 2013 08:07 PM
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Lucia

Posts: 7
Joined: 11 January 2013

Ok, now I found it:

Link removed/expo...veform_Cable_2012.pdf

I wish you a nice evening,

Lucia
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