Finally, cables in walls, ceiling and under floors a breath of fresh air and some common sense…
522.6 Impact
522.6.201 Cables under floors and above ceilings
They should be 50mm clear from the top or bottom or…
Use Regulation 522.6.204 see bottom of post
522.6.202 Cables in wall less the 50mm from the surface shall
Be in the prescribed zones or…
Again use Regulation 522.6.204
But Remember! If your cables are in the prescribed zones but not as per 522.6.204 then additional protection by a 30mA RCD as in 415.1.1 is required everywhere not just in domestic installations any more!
522.6.203 Cables in metal studded walls
Be RCD protected 30mA (415.1.1) or
Yet again use Regulation 522.6.204
However, if the cables are less than 50mm from the surface then do both of the above.
Regulation 522.6.204 is…
- SWA or
- Earthed conduit or
- Earthed Trunking or
- Steel Plates or
- SELV / PELV
Lovely and simplified and easier to understand than previous regulations (522.6.100, 101, 102 etc) and a great improvement!