A three-phase electric diagram shows the components of a circuit using standardized symbols. Three-phase wiring is one of the most common electric power generation methods.
All three-phase electric diagram include representations of the components of an electric circuit, including power sources, wires and connections. The diagrams feature the positive supply at the top and the negative one at the bottom. Other symbols that appear on a three-phase electric diagram include single cells, solar cells, AC supply, transformers and switch symbols. Three-phase electric diagrams are useful for the maintenance of existing electrical equipment and for the installation of circuits in new buildings.