Darren New wrote:
> Mike Raiford wrote:
>> A related question. why do some countries use 110 and others use 220?
> 
> History, most likely. :-) Whoever does something widespread first tends 
> to be at odds with everyone else later, when the flaws in the methods 
> are discovered but not worth fixing in an already-widespread system.
> 

Heh. switching our voltage overnight from 110 to 220 would have 
disastrous consequences.

And why 50hz v.s. 60hz?

Interestingly, PAL's refresh rate is 50hz, vs NTSC's 60hz refresh simply 
because of the difference in AC frequency..

>> BTW, here in the US I've seen AC voltage expressed as 110, 115 and 120. 
> 
> 117v RMS, I think is the actual standard. :-)
> 


-- 
~Mike

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