What do dot-dash lines represent on an interconnection diagram?

Dot-dash lines on an interconnection diagram serve to outline panel sections. They visually depict the edges or divisions of different areas within a panel or equipment, making it easier for the reader to identify the various compartments or sections that may contain specific components or sub-systems. This outline helps in the overall understanding of the layout, organization, and functionality of the entire panel or assembly. By distinguishing these sections, technicians and engineers can more effectively navigate the diagram and understand the relationships between the components contained within those outlined areas.

The other choices do not accurately represent the function of dot-dash lines. For instance, solid lines typically illustrate boundaries for electrical circuits, whereas wire connection points would usually be shown with specific symbols rather than dot-dash lines. Voltage rating markers are often indicated in a different manner, typically involving labels or specific symbols indicating the voltage rather than using a dot-dash format.