As my customer didn't know what double oven they wanted I installed a 40A MCB and 6mm twin and earth. When I returned for the second fix they have installed two ovens. One is a single oven (3.65kw 16A) and the other is a microwave/grill/oven (3.45kw 16A). So what is the best way to connect both with one supply? The first idea I had was to use a 45A DP Switch and wire both ovens to this. Ideally, I would like to isolate each one separately. Has anyone any suggestions?