Re: [tlug] [OT] power frequency (in Japan)

[jep200404 <jep200404@example.com>]

"Daniel A. Ramaley" wrote:

> On 2010-03-12 at 14:33:14, jep200404 wrote:
> >It's 50 Hz for "eastern" Japan (including Yokohama)
> >and 60 Hz for "western" Japan.
> 
> What is the reason for running different parts of the power on different 
> frequencies?

The short answer is that US companies started setting up the 
electrical system in one part of Japan, and that European 
companies started setting up the electrical system in the 
other part. US companies did 60 Hz. Europeans did 50 Hz. 

   http://www.axford.us/sitecalc.html

Here's the best map I've seen for the 50/60 Hz split: 

   http://www.japandeluxetour.com/index.php?main_page=index&cPath=107_223