In article ,
Chipmunk writes:
Interestingly other countries in the EU [the old 220v ones] got the
opposite, 230v +6% / -10%

Nice bureaucratic fiddle, but it *does* mean that appliances are now
typically designed to handle a wider voltage margin without
complaining, that in itself is a good thing.

I noticed the same kind of confusion in the US, people often quote the
voltage as 110v, with 220v across the 2 lives for larger appliances,
yet the actual supply is 120/240 nominal and can actually hit 130/260
before it goes into 'power company has to fix something' mode.

Yes, it changed from 110V to 120V in the 1950's,
but the 110V number is still stuck in peoples' minds.
States can do their own thing though. California is
supposed to be 117V as part of it's energy saving
scheme.

--
Andrew Gabriel