Where do I start well I was asked by my cousin last week to have a look at he's oven which also doubles up as a grill. He asked could it just have a 13A plug on it and plug straight into a socket in the ring main. After doing the calculations it turns out to be just under 8A but I decided to run a 6mm from the C.U and put it on a 15A MCB am I right in doing this I'm in my final year at college but I thought as it's family I would do them a favour?? But what is making me think is that a cheeky plumber told him that it could be plugged straight in to a socket but I thought better to be safe then sorry. Cheers sparks.