Our new house has fitted units with integrated fridge freezer and electric oven. Oven is tripping the fuse as is on the same circuit as the kitchen sockets. Looks like previous owner got an isolation switch installed ready to move the oven onto that and just didn't get the job finished. The isolation switch is even already marked on the fuse box. Switching the power supply onto that is gonna be a pretty straightforward job. What I'm not sure about is the flex that I'll be disconnecting from the back of the oven. That disappears into the back of the fitted units. Given it's on the circuit called kitchen sockets, I'm pretty sure there's a socket somewhere back there with the fridge freezer and oven plugged in. I've capped off live wires in junction boxes before but never a live wire coming from a plug socket, which must be a pretty unusual thing! Is it appropriate to do this? Or do I really have to suck it up and start getting the integrated fridge freezer out and go hunting for this sob plug socket?