A wiring diagram is a simplified conventional 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.
This Furnace Fan Wiring Diagram is often used to troubleshoot problems and to make sure that all the connections have been made and that everything is present. A wiring diagram usually gives information about the relative position and arrangement of devices and terminals on the devices, to help in building or servicing the device. This is unlike a schematic diagram, where the arrangement of the components 'interconnections on the diagram usually does not correspond to the components' physical locations in the finished device. A pictorial of Furnace Fan Wiring Diagram diagram would show more detail of the physical appearance, whereas a wiring diagram uses a more symbolic notation to emphasize interconnections over physical appearance.
Architectural wiring diagrams show the approximate locations and interconnections of receptacles, lighting, and permanent electrical services in a building. Interconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be on a common circuit.
If a line touching another line has a black dot, that means the line is connected. Then the unconnected line is displayed across, you will see a jump line. Most of the symbols used in cable diagrams look like abstract versions of the real objects they represent. For example, a switch will be a dashed line with a line at an angle to the wire, like a light switch that you can turn on and turn off. A resistor will be represented by a series of scribbles that symbolizes current flow restrictions.
A set of wiring diagrams may be required by the electrical inspection authority to approve connection of the residence to the public electrical supply system. Wiring diagrams will also include panel schedules for circuit breaker panelboards, and riser diagrams for special services such as fire alarm or closed circuit television or other special services.