Handbook of Electrical Design Details P2

Power riser diagram for a combined office-warehouse building. the motor it will control. The contactors, overcurrent protective devices, transformer, and operating coil are in one enclosure, and the start/stop pushbuttons are in a separate enclosure so that they can be mounted some distance from the motor. In this schematic each component is represented by a graphic symbol, and each wire is shown making individual connections between the devices. However, multiple wires could appear as one line on the drawing. As on this drawing, each wire is usually numbered to indicate where it enters the enclosure, and those numbers are repeated for...