Hi i need power to a Garden Room i've built its 10 metres from the back of the house. The original connection before was a socket in the garage about another 5 metres. Could the socket that was used before be rplace with this item (RCD Spur White 13A 30mA plastic socket , item number 48767 on toolstation) then run a cable from this to a small consumer unit in Garden Room. There will be between 6 and 8 sockets in the room and 3 LED lights on a lighting circuit. My Main consumer unit for the house is a 17th edition one.