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Are there an reg for cables being above a plasterboard ceiling?

Pricing a job to move a kitchen to the other end of the house. I thought about running a 16mm T&E to a submain board instead of running 4/5 circuits back.

The old kitchen ceiling ceiling is coming down and the rest would be ran in trunking to the new kitchen. So a mixture of above a ceiling/clipped direct/in trunking

I cant see a reg other than buried in a wall that would apply..... it wont pass through any bathrooms either

T
 
In near every case a cable run through the fabric of the house will be buried less than 50mm at some point in the run. (Unless fully surface wiring job)
But if 100% isn’t buried less than 50mm I don’t see the need for rcd protection.
But probably would anyway imo
 
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In near every case a cable run through the fabric of the house will be buried less than 50mm at some point in the run. (Unless fully surface wiring job)
But if 100% isn’t buried less than 50mm I don’t see the need for rcd protection.
But probably would anyway imo
Its true. But i dont want all 5/6 circuits at the new kitchen to be on one RCD and i cant wire it in swa :(
 
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And the way i read reg 522.6.202, 522.6.204. Its 50mm " in a wall "
 
I would say as long as the cable is 50mm above the ceiling and 50mm below the floor above then no issue you need to look at the building regs for where you drill the holes in the beams.
 

ImpededLoop

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Arms Access
It's 522.6.201 and 522.6.204 that give the answer.

As I read it, it's either 50mm in, or an earthed metallic covering that is required.
 

davesparks

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Arms Access
As my OP says. No

Above a plasterboard ceiling, clipped direct & in trunking on a wall
16mm implies this is quite a big, high end kitchen with a lot of big appliances, you don't find many of them in the kind of house where surface trunking is normally acceptable.
 
Sounds like your 16mm is going to be a distribution circuit and not buried in a wall. You can always protect your final circuits with an RCD or RCBOs so if it's just above a ceiling you should get away with it
 

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