I've threaded a 6mm t&e cable through a ceiling void to an external wall in order to power a 7KW EV charger. Obviously, its difficult to pin the cable to joists to get clearnce from the ceiling. In this case, does the cable need to be in protective duct or is it not necessary as its RCD protected? If duct is required, what spec do I need?
Many thanks...
Many thanks...