Wires: The wires represent the connections between different components in a circuit. The symbol can represent different types of switches like the Push button switch, Limit switch, 2-way switch, DPST switch, DPDT switch, SPDT switch, etc.Ģ. Switch: A switch in a wiring diagram controls the flow of power between different components and areas. Without further ado, let us discuss the top ten circuit symbols that everyone should know.ġ. The symbols are an abstract drawing of the original component and are kept standard for anyone to understand. The basic components usually include wires, bulb, switch, cell/battery, resistors, capacitors, logic gates, and much more. To read a wiring diagram, one should know the basic symbols, lines, and connections.