I didn't word that very well sorry, lights 1.5mm, plugs 2.5mm, showers 4mm and so on.
Ground rod is next to pump pad. There will be a small pool filter / pump there also so probably run 2x4mm2 NYY in plastic conduit to it.
I have three airs cons going in. Two 12,000 btu interters and one 18,000 btu inverter. If I've searched correctly on here they need each have their own 20a breaker with 3x2.5mm2 wiring?
Two showers as yet unknown whether 4000w to max 6000w these need their own 30a breaker and 2x4mm2 + 1x2.5mm2 earth cable?
Thanks for answers guys, it's nice to have a clear plan before work starts.