Distribution circuits in trunking - RCD??

[LlandrilloSpark]

Evening fellas

Im in the process of rewiring a 3 storey 9 bed house, im moving the CCU's which house the final circuits about 5m to a more better location, the two ccu's in question are both fed by 16mm twin with seperate 16mm earth, they are both off 63A mcb's housed in a 4way near the cut out, also in that 4 way is two more circuits, one for a socket and one for lights, obviously the two main ccu's are both dual RCD, but seeing as though every bit of cable from all the circuits in the 4 way are not buried and in trunking, would i need to RCD them? or perhaps RCBO the socket circuit?.

cheers

 

[monkeyelectric]

If they're in surface trunking no need for rcd protection but i would rcbo the socket outlet

 

[HandySparks]

Assume this isn't TT?

 

[MDJ]

as handy mentioned is it TT?

 

[LlandrilloSpark]

no its tns

 

[Guest55]

you could just fit an rcd socket if cable to it is surface fixed.

 

[LlandrilloSpark]

In one......... Cheers biff I have one on the van

 

[robsparky1975]

So are the 16s buried in the wall at a depth of <50mm?

 

[LlandrilloSpark]

16's are in PVC trunking from cut out to final circuit db