can anyone help?? im currently installing one double socket in a utility room and i have noticed that there is a switched fused spur already in the room, so i investigated and i found out that its a radial straight from the RCD split way consumer unit straight to 13amp switched fused spur.....but the only problem i have is that it is wired in 6mm2 T + E, It is protected by a 20amp mcb and being a split board it is all protected by the main RCD, i know the ratings and cables sizes preferred usually that are 2.5mm and 4.00mm but is there anyway i can use this 6mm2??? all answers welcome thanks