Replacing old freestanding electric oven (including ceramic hob) with new built-in double. Existing oven on separate circuit using 10mm cable wired to switch via terminal & protected by Crabtree Starbreaker containing MCB B50/61 & 63A double pole switch. New oven draws 6.2 watts max. Is it Ok to simply connect this to terminal using 6mm cable or will I need to reduce level of MCB etc.