Indoor power supply refers to the infrastructure that provides electrical energy to buildings through the grid system, providing a reliable source of power for indoor electrical equipment and electronic equipment. Through sockets and wires, electric energy is distributed to various electrical equipment to meet people's living and working needs. The stability and safety of indoor power supply are crucial to ensure the normal operation of equipment. Therefore, during the design and use process, electrical safety regulations and standards need to be followed to ensure the safety of users and provide a convenient and efficient power consumption environment.