Pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices. It gives information about the relative position and arrangement of devices and terminals on the devices, to help in building or servicing the device. A wiring diagram is often used to troubleshoot problems and to make sure that all the connections have been made and that everything is present.
Data Source: Unified Global Standards (ISCED, ISCO, O*NET, ESCO)