CEE 7/16 Europlug
For more details on this topic, see Europlug.This two-pin plug is popularly known as the Europlug. The plug is ungrounded and has two round 4 mm (0.157 in) pins, which usually converge slightly towards their free ends. It is described in CEE 7/16 and is also defined in Italian standard CEI 23-5 and Russian standard GOST 7396 C5. This plug is intended for use with devices that require 2.5 A or less. Because it is unpolarised, it can be inserted in either direction into the socket, so live and neutral are connected arbitrarily. The separation and length of the pins allow its safe insertion in most CEE 7/5, CEE 7/4 "Schuko", Israeli, CEE 7/7, Swiss, Danish and Italian outlets, as well as BS 4573 UK shaver sockets. It can be forced into BS 546 (5 A) and some BS 1363 sockets if the shutters are manually opened, though the connection may be unreliable and unsafe.
The Europlug itself is used in class II applications throughout continental Europe. It is also used in the Middle East (Iran), most African nations, South America (Brazil, Chile, Argentina, Peru and Bolivia), Asia (India, Bangladesh, Sri Lanka, Indonesia, Pakistan, and South Korea) as well as Russia and the former Soviet republics, such as Ukraine, Armenia, Georgia, and many developing nations. It is also used alongside the BS 1363 in many nations, particularly former British colonies.
Read more about this topic: AC Power Plugs And Sockets, Types in Present Use, Europlug Compatible Standards