hi there im just installing a new kitchen and want to replace my single oven with a double oven (electric) the new oven is an aeg u71014, my dad has told me that i may need to upgrade the existing wiring but im not sure looking around on other forums, so i need help!!! my dad has told me that the wiring a the the cooker on and off switch is 6mm and the trip in the box is a b32 amp i think would this be okay to use or have i got to upgrade to 10mm wiring i thank anyone who helps very much