I don't think DP switches come in 32 amp rating so you would use a 45 amp one. Get one without a neon as neons go black and waste around £25 of electricity a year. You can wire the oven straight to the switch if you like but most people like a connection unit.
Wrong. Adding a job will not affect the cable size. Cable size is decided by the MCB rating. Winston1 is once again posting poor information / advice Adding a hob ( or job ? ) may require an MCB with a higher current rating. The higher rated MCB may require a higher rated cable.
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