To be honest, you can only protect people from stupidity up to a point.
Where that point is is debatable I think. I'm sure we have all experienced
wiring in foreign parts.
Brian

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"Clive Arthur" wrote in message
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On 02/07/2019 16:20, dennis@home wrote:
snip

But do they open when you put a plug in upside down?

All of mine do. But then I'm a dare-devil sort of guy.

Cheers
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Clive