Hello guys,
I know this is not "on topic" question but I need to ask a few questions that always
interested me, but I didn't have chance to get appropriate answer.
First of all in Europe we use single phase voltage 230 V and 50 Hz frequency,
and I know that in USA, Japan (maybe in some other countries too) voltage is 120 V
and frequency is 60 Hz. Why is that so?
Second, in school we learned that it is always better to transfer el. power with
higher voltage and lower current because of Joule's losses (I^2*R). However, does
that mean that in USA there are more losses in powerlines because of higher current
comparing to Europe's ( I assume transfered power is approximately the same)?
What is, according to your opinion, main reason that USA chose 60 Hz and 120 V?
I really never had chance to aske these question to any american el. engineer so I ask
here, I hope you won't mind.
Thanks in advance
I know this is not "on topic" question but I need to ask a few questions that always
interested me, but I didn't have chance to get appropriate answer.
First of all in Europe we use single phase voltage 230 V and 50 Hz frequency,
and I know that in USA, Japan (maybe in some other countries too) voltage is 120 V
and frequency is 60 Hz. Why is that so?
Second, in school we learned that it is always better to transfer el. power with
higher voltage and lower current because of Joule's losses (I^2*R). However, does
that mean that in USA there are more losses in powerlines because of higher current
comparing to Europe's ( I assume transfered power is approximately the same)?
What is, according to your opinion, main reason that USA chose 60 Hz and 120 V?
I really never had chance to aske these question to any american el. engineer so I ask
here, I hope you won't mind.
Thanks in advance