In message <OF5731886A.DA0AD43C-ON882579C8.00643963-882579C8.00673A20@US.Schneider-E lectric.com>, dated Wed, 21 Mar 2012, [email protected] writes:

I have heard stories about some 50Hz iron-core wall-warts burning out at 260-270Vac.


I think 'burning out' is not quite right. Except for really dodgy imports, these things either have a thermal fuse or that clever primary wire that quietly goes open-circuit when too hot.
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John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
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