Supply to a detached building
I want to run a single phase supply out of my house to a detached building.
I can either :-
1. run a 2 core cable between the house and the detached building and provide rcd protection with an earth electrode at the detached building end.
2. run a 3 core cable and earth the installation within the detached building using the earthing arrangements within the house.
Which method is acceptable, 1, 2 or either.
Thanks in advance.