Residential power supply refers to the system that delivers electricity to homes for everyday use. This power typically comes from a local utility company, which generates electricity at power plants and transmits it through a network of power lines and transformers to residential neighborhoods. In a home, the electricity is distributed through a circuit breaker panel to various outlets and appliances, such as lights, refrigerators, and heating systems. The supply is usually measured in volts and is designed to provide a consistent and safe level of power for all household needs.