In American fixtures the tongue of an Edison type socket should be connected
to the hot leg as it's the most isolated part of the socket and least likely
part to inadvertently come in contact with any other part of the fixture. If
these lamps use a different type of socket, it may not matter. You can also
replace the plugs with polarized ones




wrote in message
oups.com...
Hi,

I have some lights which I bought in Japan. I have been using them
over here for like 8 years now and they seem to work fine, I have
replaced the light bulbs. One issue is that the plugs are not
polarized, and I think in Japan the voltage is lower at 100v, and
where I was living (Tokyo) was at 50Hz instead of the USA 60Hz.

Are there any issues I should know about? Can I keep using these?

If the plugs are not polarized how do these lamps work safely in
Japan?

Best, Mike.