Pyrolytic Oven and Induction Hob on same circuit

Yes you can run both appliances off one circuit. For many, many years, a standard cooker circuit wired in 6mm2 T&E cable on a 32A mcb through a 45A double pole cooker control point has been satisfactory for a total connected load of 15kW. This information is clearly stated in text books available to electricians such as the Electricians Guide to Part P and the reason it is capable of supporting up to 15kW (65.2A) is because something called load diversity is allowed to be taken in to consideration. This means in simple terms that neither appliance would ever be run at its full load capacity and neither would ever be used together at full load capacity. It would just just never happen. You could use a 10mm2 cable but there is really no need. The point about the manufacturer stating the 16A and 32A circuits is they are the MINIMUM sizes needed. Ovens and hobs are what is known as fixed load appliances. In other words they cannot physically draw more current than that which they are rated. It would be perfectly safe to run both appliances on the same circuit on a 32A mcb because that mcb is protecting the circuit cable NOT the appliances. The only stipulation as regards the cooker control switch is it is required to be within 2m of both appliances. I hope this puts your mind at ease. Roy

The cable size would depend on the installation method and external influences. You couldn’t run both off one circuit as the internal wiring of the oven would only be rated at 16amp and thus protected by a 50amp mcb also termination of 2 10mm or bigger cores would be difficult in one terminal to go from the hob switch on to the oven. You would be better putting a small dB in the kitchen to fuse down and split the circuit into 2 smaller circuits.

Ideally they should be on separate circuits, however given that the supply cable is currently 10mm and assuming the distance to the consumer unit is not too far then yes they can be connected to the same cable with a 50A MCB/RCBO.

In addition to electrical theory, manufacturers installation instructions should also be adhered to. One thing to take into consideration, should one of the appliances develop an electrical fault, you would lose the use of both appliances if on the same circuits with no means of individually isolating either appliance