What is Hertz?
Hertz (Hz) is the standard unit of frequency that indicates how many cycles occur in one second of alternating current (AC). In electrical systems, it’s essential to measure the frequency to ensure compatibility between electrical devices and the power supply. For example, in North America, the standard frequency for residential and commercial electricity is 60 Hz, while in many other parts of the world it’s 50 Hz.
In practical electrical work, understanding Hertz is vital when installing or repairing equipment like motors, transformers, and appliances. Devices designed for 60 Hz may malfunction or become damaged if operated on a 50 Hz system. Electricians must verify the correct frequency to avoid inefficiency or hazards. Matching the frequency of generators, inverters, and power sources with connected equipment ensures safety, optimal performance, and longevity of the system.
