I would like some advice about wiring my new shower pump. I've removed the old electric shower and I plan to use the cable for my new Salamander shower pump. I intend putting a 30A junction box where the cable used to connect into the shower pull cord switch, from there I will run 2.5 twin and earth cable into a 30uA fused spur unit and wire the shower pump into this spur. Would like to know if this is acceptable or should I be looking another was to connect this shower pump?