Why are there so many plugs and sockets?(iec.ch)3 points·by workrockin·7 ปีที่แล้ว·1 commentsiec.chWhy are there so many plugs and sockets?https://www.iec.ch/worldplugs/why_so_many.htm1 commentsPost comment[–]workrockin·7 ปีที่แล้วreplyAlso a map of world plugshttps://www.iec.ch/worldplugs/map.htmAnd IEC standardshttps://www.iec.ch/worldplugs/iecstandards.htm
https://www.iec.ch/worldplugs/map.htm
And IEC standards
https://www.iec.ch/worldplugs/iecstandards.htm