Power supply from house to 6 way RCD in outside shed with 1 socket. Power then to another shed at bottom of the garden. When "qualifeid electrician" wired it up everything worked but the wire was too thick in the house for the unit to fit back together. He re looked at the wiring said we need longer screws and left, it then blew the trip in the house. Can anyone help with a wiring diagram as he has taken it with him, and now we cannot get hold of him.