Main frequency

European countries use 50Hz They decided to use 50Hz instead of 60Hz, because they use a decimal (US using duodecimal) , this calculation is more convenient, but they still retained the voltage of 110V. Unfortunately, 50Hz AC efficiency is far poorer than 60Hz.

In the UK, Africa, Australia, most of Asia and Russia, the frequency of AC (alternating current) running through electrical mains is 50Hz (Herts). While in North America, and a few other countries (Japan uses both), the AC frequency is 60Hz.

Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity. … Listing per country. CountryVoltageFrequencyBelgium230V50HzBelize110/220V60HzBenin220V50HzBermuda120V60HzList of Worldwide AC Voltages and Frequencies – School for Champions www.school-for-champions.com › science › ac_world_volt_freq_list

Frequency Standardization As the 20th century continued, more power was produced at 60 Hz (North America) or 50 Hz (Europe and most of Asia). Standardization allowed international trade in electrical equipment. Much later, the use of standard frequencies allowed interconnection of power grids.