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NEMA 5-20R outlets, which are similar to type B but have a T-shaped neutral slot, are sometimes used for higher current 120 V equipment (up to 20 A). Homes are typically provided with 120/240 V split-phase power; NEMA 14-30R and 14-50R receptacles are provided on 240 V circuits for clothes dryers and electric stoves. [20] Cape Verde: C, F 220 V
In Hong Kong, the main electrical wiring system used is BS 1363. In old buildings, the BS 546 system is also common. Due to its proximity to mainland China, electrical products from there are present in Hong Kong, especially those as a result of cross-border purchase carried out by mainland Chinese immigrants. Nevertheless, even if the product ...
When commercial electric power was first introduced in the 1880s, it was used primarily for lighting. Other portable appliances (such as vacuum cleaners, electric fans, smoothing irons, and curling-tong heaters) were connected to light-bulb sockets. As early as 1885 a two-pin plug and wall socket format was available on the British market.
During the first 50 years of commercial use of electric power, standards developed rapidly based on growing experience. Technical, safety, and economic factors influenced the development of all wiring devices and numerous varieties were invented. After the two-prong electric plug was introduced in the 1920s, the three-pin outlet was developed.
China is the world's largest electricity producer, having overtaken the United States in 2011 after rapid growth since the early 1990s. In 2021, China produced 8.5 petawatt-hour (PWh) of electricity, approximately 30% of the world's electricity production.
China is the country with the largest consumption of electricity as of 2011. China's Twelfth Five-Year Plan (covering the period 2011 to 2015) provided for the development of an ultra-high-voltage (UHV) transmission corridor to increase the integration of renewable energy from the point of generation to its point of consumption. [4]: 39–41
It is one of the largest privately owned electrical appliance retailers in mainland China and Hong Kong. It was founded by Wong Kwong Yu (Huang Guangyu), a Chinese businessman, in Beijing in 1987. Its brand name "GOME" was first adopted in 1993. Since 1999, it has developed outside Beijing and established retail outlets in other Chinese cities.
Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. Wiring is subject to safety standards for design and installation.
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