North America is generally on 220-240V split phase with NEMA compatible plugs. In Mexico, the plugs are often ungrounded and only compatible, not identical to

North America is generally on 220-240V split phase with NEMA compatible plugs. In Mexico, the plugs are often ungrounded and only compatible, not identical to NEMA. In my house in the US I have mostly 120V circuits with a few 240V for appliances. Brazil is a bizarre mess of 127V single phase in most of the south and 220V single phase in the rest. They are supposed to use euro-style grounded receptacles but often have installed euro and NEMA bi-compatible plugs at 220V or 127V. A lot of 220 circuits only carry 8-10A. Argentina uses the Australian style receptacle with 220V 50Hz. I'm not sure about the rest of South America but I think Uruguay and Paraguay are compatible with Argentina and the rest are on 60Hz and generally 220V. I'm surprised nobody mentioned Japan, and its varied system.