The difference between single-line and schematic diagrams Single-line diagrams are where upper-level details like generators, main transformers, and large motors are shown. Schematic diagrams show the functionality of more mid-level electrical circuits without getting bogged down in the details of individual connections (which are shown on wiring diagrams). Single Line Diagram For House Wiring - Wiring Diagram And Description: House Wiring Tips – Cubefield with Single Line Diagram For House Wiring, image size 800 X 650 px, and to view image details please click the image. Here is a picture gallery about single line diagram for house wiring complete with the description Types of Electrical Drawing and Diagrams - Electrical Wiring Diagram. The wiring diagram is used for the representation of electrical components in their approximate physical location using their specific symbols and their interconnections using lines. Vertical and horizontal lines are used to represent wires and each line represents a single wire that connects between electrical components.