The manufacturers of our digester has specified an IP66 rated RCD protected socket for the supply for the poo tank bubbler.
The dedicated circuit planned for that supply (SWA 2.5, T+E, buried - 10 meters or so) is already RCBO protected. Do I also need RCD protection on the twin socket , or can I simply fit an IP66 socket in the knowledge that the circuit is already protected by the RCBO?
I'd like to bury the SWA cable in the same trench that I dig for the poo tank pipe. Bet that's verboten innit??
Thanks in advance @ProDave or @JSHarris or @Onoff or anyone clever enough to know the answer ☺️