I currently have my double oven (load wattage 4120W - 4900W) hard wired into to wall box (with red oven off/on isolation switch) the hard wiring is on a seperate main to fuse box for trip switch. I have a gas hob, which i am just about to exchanged for an induction hob (max 7200W). my question is would the hard wiring take the full combined wattage (12100W)? would it recommended to put in a junction box in to take the oven and hob wiring to join to the hard wiring. what size junction box would i need? or put plugs onto both appliances and make hard wired double socket? again what socket box would be needed? appreciate any advice.