At 07:07 AM 1/28/98 -0800, you wrote:
>hello out there does any one out there know why 60 cps and 120 vac
>is used in usa for line voltage no one seems to know or have a good
>answer for this question

History.

It makes for less flicker (than 50Hz).

It wastes power (I2R losses) compared to 220 VAC.

60cps?  Because we're slow typists <G>

Andy


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Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA
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