Curious as to what is being used where? Here's a list!:
>
> Voltage tolerances are the standard plus or minus10%, but the
>underdeveloped nations on the list can vary to a greater degree, and
>typically do.
>
> Frequency tolerances are defined more locally to their geographical
>region, but again, non-industrialized nations are where the greatest
>deviances are found.
>
Australia and the Pacific:
>
>Australia 240-250V/50Hz
: Australia is in the process of adopting the 230V 'standard'