What is electrical wiring diagram? Refer to Japensen general book?

An electrical wiring diagram is a visual representation of the electrical system or circuitry in a building or structure. It shows the connections between various components such as switches, outlets, lights, and appliances, as well as the routing of wires and cables.

In the context of a Japanese general book, it may refer to a diagram or illustration that explains the electrical wiring system commonly used in Japanese buildings or homes. This could include information on the types of wiring, electrical codes and regulations, and best practices for installation and maintenance.