A single-line diagram is a technical drawing that illustrates the components of a utility company's overhead service entrance in the form of a simplified one-line sketch. It consists of standard symbols that represent distribution equipment, terminals, and connectors and indicates current and voltage levels. The diagram thus gives an overview of the entire electricity network, allowing engineers to identify any issues or areas for a further investigation quickly. Use EdrawMax to download this template. EdrawMax lets you customize such templates to the fullest from the built-in templates and style options.