Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site tekecs.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!mtuxo!mtunh!mtung!mtunf!ariel!vax135!cornell!uw-beaver!tektronix!orca!tekecs!jeffw
From: jeffw@tekecs.UUCP (Jeff Winslow)
Newsgroups: net.misc,net.analog
Subject: Re: "Why?" for many "standards"
Message-ID: <5562@tekecs.UUCP>
Date: Thu, 1-Aug-85 12:53:13 EDT
Article-I.D.: tekecs.5562
Posted: Thu Aug  1 12:53:13 1985
Date-Received: Sat, 3-Aug-85 10:23:58 EDT
References: <255@brl-tgr.ARPA>
Distribution: net
Organization: Tektronix, Wilsonville OR
Lines: 11
Xref: watmath net.misc:8348 net.analog:405

> Why are the standard worldwide AC line-voltage frequencies 50 or 60 Hz?
> 
> Why is line voltage typically 120 or 240 Volts?
 
An interesting corollary question is -

Why does Japan have a line voltage of 100v, and why is the country split
between 50Hz and 60Hz (I'm told the dividing line runs right through the
middle of Tokyo) ?

				Jeff Winslow