Do I need Earthed steel Conduit?

[dave12]

Hi,

I am having a new kitchen fitted, and am going to install a lighting circuit off a fused spur for the above bunker lights.

Anyway to do this I will have to raggle the sandstone wall in order to sink my cable. The wall is about 0.5m thick so I don't have a problem with depth. My plan is to run the cable behing the tiles in both Horizontal and Vertical lines (no diagonal). Will I still need to run my cable in Steel Conduit? Or can I just seat the cable in the raggled trench and tile over the top?

Thanks for your advice.

 

[Spark123]

If the cable is going outside the safe zones and less than 50mm deep then it needs to have an earthed outler layer (SWA, MICC etc) or be run in an earthed metallic conduit/trunking.
I take it you know about part p (England/Wales)?

 

[dave12]

Thanks for the reply Spark123,

I was planning to run the cable horizontally at about 100mm above the height of the sockets. So I guess this takes me out of the safe zone then? It is not a problem to go >50mm deep, just a pain and more mess.

Well if I have to use a metallic conduit, so be it. Am I still ok to just tile over the top? Can't think of any reason why not.

 

[Spark123]

Yeah, it sounds like it will be outside the zones. It is up to you wether or not you want to go 50mm deep - just make sure the wall doesn't fall down .
No reason why you can't tile over the wall once the conduit is in.