50Hz60Hz

50Hz60Hz refers to the two most common alternating current (AC) mains frequencies used worldwide. The frequency of an AC electrical system is the rate at which the current changes direction per second, measured in hertz (Hz).

The frequency of 60 Hz is primarily used in North America, parts of South America, and some East Asian countries such as Japan and South Korea. The frequency of 50 Hz is used in the majority of the rest of the world, including Europe, Africa, Australia, and most of Asia.

The choice of frequency was largely determined by early electrical engineering decisions and the development of infrastructure in different regions. For instance, the 60 Hz frequency was favored by Westinghouse in the United States, while 50 Hz was adopted by General Electric and Tesla in Europe.

The difference in frequency can necessitate the use of different types of electrical equipment or transformers when connecting to grids with different frequencies. While most modern electronic devices are designed to operate on either frequency with appropriate adapters, older or specialized equipment might be frequency-specific. The transition between these two frequencies is a significant consideration in global electrical engineering and trade.