Question

What Wattage travel converter?

Location

City: Tokyo

Prefecture: Tokyo

Country: Japan

Answers

240
Japan runs on 100 volts A/C
100 Volt
Japanese electrical plugs have two, non-polarized pins. They fit into North American outlets.
The frequency of electric current is 50 Hertz in Eastern Japan (including Tokyo, Yokohama, Tohoku, Hokkaido) and 60 Hertz in Western Japan (including Nagoya, Osaka, Kyoto, Hiroshima, Shikoku, Kyushu), however this frequency difference affects only sensitive equipment.
Japan uses 100v/50Hz AC current in the Tokyo, Kanto, Tohoku and Hokkaido regions and 100v/60Hz AC current in Osaka, Kansai and Kyushu regions. If you are coming from the United States then you don't need to worry about an adapter as your electronic appliances will be able to handle the current.
110v

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