A single-phase system is a type of electrical power system that uses a single alternating current (AC) waveform to deliver electricity. This system is commonly found in residential and small commercial applications, where the demand for power is relatively low. In a single-phase system, the voltage alternates in a sinusoidal manner, typically at a frequency of 60 Hz in North America and 50 Hz in many other parts of the world. In a single-phase system, electrical devices are connected to two wires: one is the live wire, and the other is the neutral wire. This setup allows for the efficient operation of household appliances, such as lights, fans, and small motors. However, for larger industrial applications, three-phase systems are often preferred due to their ability to deliver more power and improve efficiency.