I wonder why Japan went with such an oddball voltage like 100? Was it to inhibit competition from imported electrical appliances? (Wonder if that's also the same reason for the odd-ball Israeli plugs with the oval pins instead of round.)
Why don't the Japanese power companies crank it up 10 or 20 volts and do the full 110 - 120? Would the existing range of appliances mind it terribly considering they're sometimes built with tolerances up to 127 volts?
Voltage here in the USA ranges from 110 to 120 depending on where you are and what time of day.
My voltage at home in NYC is approximately 117 to 118 volts give or take (readings taken at night).
