electricity questions?

cjh said

Normal household power here is 240 V AC @ 50Hz, and workshop power is that and 3 phase 415V AC @ 50Hz.
Lighting is 8 amp, light duty power is 10 amp, heavy duty is 15 amp, and really heavy duty is 20 amp, while 3 phase varies from 20 amps per phase up to 60 amps per phase.
So, 220V over there, is that 3 phase?

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Early rural farmhouses here in the states did --still might have "110" single phase only, and no 220-240.

the large majority of U.S. houses have 220-230-240 single phase(used interchangeably) service for heavy duty stuff like welders, aircompressors, etc and cooking ranges and ovens, and all household lamps, etc, are 120V single phase.

Some households might have 3 phase available at extra cost, it just depends on where you live. In some areas (depends on the electric co.) getting 3 phase into your shop, even if it's "on the pole" would cost you a lot of money.