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Depth of Underground Cables
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9Yally  
#1 Posted : 13 May 2013 10:46:54(UTC)
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9Yally

Morning,

Is there a certain recommend depth armoured electrical cables have to go underground ?

The cable will be running through grass.

Thank you in advance
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9Yally  
#2 Posted : 13 May 2013 11:04:59(UTC)
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9Yally

Sorry I forgot to add, the cable will be going through a domestic property in the garden
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boblewis  
#3 Posted : 13 May 2013 11:09:42(UTC)
Rank: Super forum user
boblewis
There are in fact but they are adhered to in word only!!!
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9Yally  
#4 Posted : 13 May 2013 11:16:18(UTC)
Rank: Forum user
9Yally

Thanks Bob,

Have you a link to where I can find this information ?
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Zimmy  
#5 Posted : 13 May 2013 12:44:51(UTC)
Rank: Super forum user
Zimmy
BS7671:2011 as amended and will need to at a depth that ensures that it will not be damaged. Public highways are another story.
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prodigal  
#6 Posted : 13 May 2013 13:20:21(UTC)
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prodigal
You could also try the NJUG guidance: http://www.njug.org.uk/publications/
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9Yally  
#7 Posted : 13 May 2013 13:56:07(UTC)
Rank: Forum user
9Yally
Thanks for the reply guys.

I have found this on the HSE website which states that there isn't a statutory depth for underground cabling.

http://www.hse.gov.uk/electricity/faq-esqcr.htm

I can't find a free version of BS7671:2011 - Can anyone enlighten me what it states in there please.

The cable will be running approximately 50 metres through turf and will be armoured.

I have stated that the cable must run along the permitter of the lawn so that the location is known
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9Yally  
#8 Posted : 13 May 2013 14:13:29(UTC)
Rank: Forum user
9Yally
zimmy wrote:
BS7671:2011 as amended and will need to at a depth that ensures that it will not be damaged. Public highways are another story.


Thanks Zimmy, I can't access the standard but does it specify a depth or just at a depth 'it will not be damaged'

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wclark1238  
#9 Posted : 13 May 2013 14:27:40(UTC)
Rank: Forum user
wclark1238
Extract from BS7671:2008 522.8.10 - Buried cables, conduits and ducts shall be at a sufficient depth to avoid being damaged by any reasonably foreseeable disturbance of the ground.
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Zimmy  
#10 Posted : 21 May 2013 12:54:08(UTC)
Rank: Super forum user
Zimmy
wclark1238 said it well . |In a carden where you'll be digging at 1 foot, them bury the cable at 2 foot. Better still place warning tapes or tiles about six inches above the cable :-)

If you can use a RCD on the circuit. PM if needed.
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