Then Stefek replied:
I'm pretty sure, but don't claim to be authoritative, that the switches are supposed to be accessible. The full-on answer would depend on the function the switches are considered to be performing: if emergency shutoff, then visible-and-accessible; if isolation, less accessible would be permitted. Let's use common sense here: definitely one of the reasons you want the switches is to cut power to your cooking appliance if something catches fire on it or in it. Then you want to be able to cut the power PDQ alongside doing Other Sensible Things (covering with well-dampened towel, for example) - and the "you" might just be Auntie Mabel cooking lunch for all of you. Hence the requirement for the switch to be in plain view and close by - i.e. I'd think long and hard about pretending a cooking appliance isolator does *not* have any emergency switching function.
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Now, what Stefek is saying does seem to make good sense. However, you know all those fancy designer kitchens you see in magazines (well some magazines)? You rarely see a plug socket above the worktop, never mind a socking great cooker control switch / fuse unit to ruin their beautiful (expensive) design. Where do they put them? Or do they have hoardes of servants to deal with Auntie Mabel's mishaps?
Thanks. Mike