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USSR (along with much of Eastern Europe) used GOST sockets with 4.0 mm pins similar to type C plugs and the 4.8 mm standard used by type E & F. [52] Rwanda: C, E, F, G [53] 230 V 400 V 50 Hz Types C & E are official; type G has become common as well because of imports from Uganda, Tanzania and Kenya; type F is very rare. [54]
On the female socket, the major key is 4 mm deep at the 6-o'clock position. The width of the major key defines the current rating: 32 A plugs have a narrower 5 mm wide groove, while 16 A plugs have a wider 8 mm groove, and therefore 32 A plugs can be used with 16 A sockets but 16 A plugs cannot be used with 32 A sockets.
The pin length is the same as in the Chinese version. The earthing pin length is 21.4 mm (0.843 in) for the 10 A version and 21.8 mm (0.858 in) for the 20 A version. On the plugs, the pole length is 18.2 mm (0.717 in) for the 10 A version and 17.8 mm (0.701 in) for the 20 A version.
BS 546 is also the precursor of current Indian and South African plug standards. The 5 A version has been designated as Type D and the 15 A as Type M in the IEC 60083 plugs and sockets standard. BS 546 plugs and sockets are still permitted in the UK, provided the socket has shutters.
A passive electric power adapter, sometimes called a travel plug or travel adapter, allows using a plug from one region with a foreign socket. As other countries supply 120-volt, 60 Hz AC , using a travel adapter in a country with a different supply poses a safety hazard if the connected device does not support both input voltages.
Vietnam Electricity (EVN; Vietnamese: Tập đoàn Điện lực Việt Nam, lit. 'Vietnam Electricity Group') is the national and the sole public power company in Vietnam . It was established by the government of Vietnam as a state-owned company in 1994, and has operated officially as a one-member limited liability company since 2010.
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Vietnam Standards (TCVN, Vietnamese: Tiêu chuẩn Việt Nam, lit. 'Standards of Viet Nam'), or the Vietnamese National Standards ( Vietnamese : Tiêu chuẩn Quốc gia Việt Nam , lit. 'National Standards of Vietnam'), are the national standards of Vietnam issued by the Vietnam Standard and Quality Institute , part of the Directorate for ...