In article , Andy
Burns writes

My supply voltage tends to be at the high end,

It is rather (250.78V average). The upper limit is 253V, so your
utility company may be reluctant to get involved. Do you get lots of
lightbulbs popping?

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(='.'=) Bunny says Windows 7 is Vi$ta reloaded.
(")_(") http://imgs.xkcd.com/comics/windows_7.png