This part of the lEC 60320 sets the dimensions for appliance couplers for two poles and two poles with earth contact ?C for the connection of electrical devices for household and similar onto the mains supply and ?C for the interconnection of the electrical supply to appliance or equipment ?C and dimensions for gauges.
IEC 60320-3:2014 Referenced Document
IEC 60320-1:2001 Appliance couplers for household and similar general purposes - Part 1: General requirements
IEC 60320-3:2014 history
2022IEC 60320-3:2014/AMD2:2022 Amendment 2 - Appliance couplers for household and similar general purposes - Part 3: Standard sheets and gauges
2018IEC 60320-3:2014/AMD1:2018 Appliance couplers for household and similar general purposes - Part 3: Standard sheets and gauges; Amendment 1
2018IEC 60320-3:2018 Appliance couplers for household and similar general purposes - Part 3: Standard sheets and gauges
2014IEC 60320-3:2014 Appliance couplers for household and similar general purposes - Part 3: Standard sheets and gauges