10mm single earth

[keniff]

Has anyone got any idea whether bonding cables can be buried direct in screed? Iv been putting my mains cables in conduit on the floors but wondered whether to just zip tie it to an existing run of conduit i have going in the right direction, can't find anything in my books on this

 

[Deleted member 26818]

If it was a main earth, it would have to have mechanical protection if buried, or be 16mm².

 

[keniff]

Top man, I ran in conduit in the end just in case needs to be replaced in future

 

[Engineer54]

Top man, I ran in conduit in the end just in case needs to be replaced in future

Makes sense!!! lol!! It's gone from the equivalent of 4mm to 6mm and now 10mm since i started in the industry!! Next it'll be 16mm!! ..lol!!

 

[Geordie Spark]

Makes sense!!! lol!! It's gone from the equivalent of 4mm to 6mm and now 10mm since i started in the industry!! Next it'll be 16mm!! ..lol!!

I'm wondering if the bloke who changes these regs has a relative who owns a cable factory. :joker:

 

[keniff]

Yeah everything is changing all the time in this trade I've been doing it a few years and find it hard to keep up! I have a nice network of conduit going on now as had no choice but to run all downstairs sockets in the floor! Ever seen a underground map of the London tube station lol!

 

[Guitarist]

Has anyone got any idea whether bonding cables can be buried direct in screed? Iv been putting my mains cables in conduit on the floors but wondered whether to just zip tie it to an existing run of conduit i have going in the right direction, can't find anything in my books on this

Can you clarify which earth cable you are talking about please? Do you mean the 10mm to extraneous conductive parts?

 

[telectrix]

well, he said bonding, so i would assume so

 

[Guitarist]

Just hate assuming tel.

 

[keniff]

Yes It was to the gas box outside, the main earth is supplied via a core in a swa supply

 

[Guitarist]

PVC is resistant to plaster but shouldn't be buried in cement due to the chemical reaction. Personally, I always put cables in conduit for the upgrade/replacement options available down the line.

 

[keniff]

Yeah I agree I ran the ring in the same way rather than armoured for replacing reasons

 

[Engineer54]

Yeah everything is changing all the time in this trade I've been doing it a few years and find it hard to keep up! I have a nice network of conduit going on now as had no choice but to run all downstairs sockets in the floor! Ever seen a underground map of the London tube station lol!

Because virtually every house, villa and apartments are all concrete frame and base with block infill in Cyprus (and i guess many other countries too) this is the normal way of wiring these domestic structures, but it goes for everything not just the socket outlets. So it can be a bit of a maze of conduiting on the concrete slabs, before the screed goes down... lol!!

I don't think i've ever seen a T&E wired house etc over there, in fact can't say i've seen too much of T&E used, except for surface work!! What i will say is, they still use the old style soft metal buckle clips which make the installation look far better than with the modern plastic clips...lol!!