What does a line on a ladder diagram represent?

In a ladder diagram, a line represents wire connections between different components in the circuit. The horizontal lines illustrate the various control and power components connected within the electrical system, while the vertical lines typically represent the power source and ground. This format mimics the rungs of a ladder, making it easier to visualize and understand the electrical interconnections and functions of each device in the system. By clearly indicating how the components are wired together, ladder diagrams allow for straightforward troubleshooting and maintenance of electrical circuits.