Hi, can I wire a fan assisted oven direct into a ring final circuit or does it have to be protected at the CU by its own RCD? In the installation guide it says it has to be protected by a 13amp fuse.
NO. anything connected to a ring final has to be protected by its own fuse.
The fuse in the consumer unit is there to protect the fixed cabling in the walls, not the device on the end.
So you could put a 13A plug on the cable and plug it into a socket on the ring. It would be better if it were on its own circuit though. Do you have a separate circuit in your kitchen called "cooker"?
Thanks, there isn't a separate circuit for "cooker" as the old cooker is a gas cooker. Can I put it onto a fused switched spur? Would that be better than a plug?
You could do that but the guidance is that any fixed load of more than 2000watts should not be connected to a ring final but should have its own circuit.
This is to prevent overload, or concentration of loads, on the ring circuit.
As BAS has pointed out, this sort of work is notifiable, so it woild be easier, amd cheaper, to get your local registered electrician to sort it out for you.
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