No idea but in old persons showers there is often a kind of vertical wire
secured at the bottom that is pulled if the person has a fall and cannot get
up.
Brian

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"Steven Watkins" wrote in message
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Why do houses have a switch to turn the shower off, either a cord on the
ceiling or a switch in the hall?

Can't be for safety - if you're in the shower and get a shock, if you've
managed to get out to reach the switch, you've got away from it anyway.

Can't be to isolate to work on it, there's a fusebox for that.

Don't need to turn it off when you're finished showering, there's a switch
on the shower itself.