Wiring schematics are charts indicating the flow of electrical current through a system and assist in electrical design, building, repair and troubleshooting. Studying a schematic helps engineers to determine whether or not any circuit components are blown and need to be replaced.
All electronics engineers must know how to read and follow wiring schematics. Wire coloring is a key element of wiring schematics. Diagrams use color codes to show which wires connect to which electrical components within a circuit. The majority of wiring schematics include a key or legend indicating wire color codes, along with other information necessary to interpret a diagram.
Elaborate schematics are generally divided into sections, such as voltage regulation or connectors. Expert schematic designers often build the diagram with inputs on the left side and outputs on the right. Schematics are not drawn to scale and are intended to simply illustrate connections between components.
Schematics use symbols to represent connections to various types of ground and power. Such symbols might be seen in several places on a schematic. However, each respective appearance represents a connection to the same conductive object or place. Power connections, on the other hand, are often depicted with labels consisting of letters and numbers.