Auto Manual Selector Switch Diagram. The switch is shown as a single pole. The circuit shown in figure 27 1 permits a motor to be operated by a float switch or to be run manually.
It is not difficult to learn the basic symbols. Basic wiring for motor contol symbols standardized symbols make diagrams easier to read. Both line and wiring diagrams are a language of pictures.
Hand off automatic controls are used to permit an operator to select between automatic or manual operation of a motor.
It is not difficult to learn the basic symbols. Selector switches selector switches are operated by turning a knob instead of pushing a button. In fig 2 different connection and wiring diagrams are shown for a two pole single phase manual changeover switch. Man stands for manual and auto stands for automatic.
