- Reaction score
- 10,616
I think @bigspark17 suggestion is you break the CPC at the rotary isolator, so your CU has a DP RCD and the SWA out has the PME-derived CPC, but there is a different earth system from the isolator to the tub (and any related sockets).
Of course you need to make sure there is no metalwork, etc, in touchable range that is on a different earth system (e.g railings with a PME-derived earthed floodlight, CCTV camera, etc, mounted on them etc).
Stand alone metalwork in contact with the Earth is fine, as that is your TT rod's system anyway. No harm in bonding to the rod just in case though.
Yep, think I was over engineering things. Don't even need the rotary, just dedicated outdoor socket for the Lay-z-spa. Thanks @bigspark17
Just gotta get an earth rod in somehow. That might prove interesting. Might have to drill a hole, to get through the top layer of stones, below that its clay.