This Architectural Drawing is AutoCAD 2d drawing of Neutral bar and ground bar details in AutoCAD, dwg file. Neutral bars have a heavy, high-current path between the bar and neutral lug, which is itself isolated from the chassis It is obvious that the neutral lug-to-bar connection is heavy, and designed to flow a lot of current all the time. Ground bars are, by design, in direct contact with the panel chassis. For more details and information download the drawing file.