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Re: Which from the "1" and "2" black wires are the neutral and live?
https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets
https://en.wikipedia.org/wiki/Mains_power_around_the_worldHow do I find out if the mains connector is unpolarized?
https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets