To understand electrical schematic diagrams, learn the meaning of fundamental symbols, such as voltage sources, inductors, transformers and connectors, through online retail and tutorial sites. Most schematic tutorial sites also provide video instructions and tips on reading wiring diagrams and understanding the electrical language.
Sparkfun.com offers online tutorials for reading electrical and electronic schematics. The site provides images and uses of each electrical component. It also displays variations of some symbols and the equivalent signs used in international schematic diagrams.
Some online software retail sites, such as SmartDraw Software, provide articles on understanding electrical wiring diagrams. The site includes sample images of diagrams and shows standard symbols of electrical components, such as ground wires, electric motors, surge protectors, capacitors and toggle switches. SmartDraw also provides samples of circuit diagrams and shows how to draw electrical diagrams using its product.
An electrical schematic diagram emphasizes the flow of the electrical system and uses symbols to represent electrical components. Unlike a wiring diagram in which the symbols resemble the ones shown in an actual circuit, electrical schematic symbols do not.