A wiring diagram is a graphical representation of the physical connections and physical layout of an electrical system or circuit. As shown in the diagram, a basement wiring plan shows how the electrical wires are interconnected and can also show where fixtures and components connected to the system. As per the basement wiring plan picture, a wiring diagram is a simplified conventional pictorial representation of an electrical circuit. A basement wiring plan usually gives information about the relative position and arrangement of devices and terminals on the device, to help in building or servicing the device. It should be noted here that the basement wiring plan diagram is unlike a schematic diagram, where the arrangement of the components’ interconnections on the diagram usually does not correspond to the physical locations in the finished device.