Checking Switches

In a circuit diagram, a switch is represented by a symbol and in the idle state.

Normal Open Or Normal Close Switch:

1. Normal Open Or Normal Close Switch
Switches are classified into those which make the circuit open and those which make the circuit closed when OFF.

Switch Connection:

Switch Connection Continuity Table:

2. Switch connection
This figure illustrates a complex switch. The continuity between terminals at each position is as indicated in the table above.