Wiring Diagram Switch Symbols. The electrical symbols will not only show where something is to be installed but what type of device is being installed. When performing any electrical wiring for any of these switches devices you will be able to identify the type and location of the various devices from this list of switch symbols.
The electrical symbols will not only show where something is to be installed but what type of device is being installed. This list of switch symbols will help you to identify these devices on the electrical blueprint or wiring diagram layout. Disconnect circuit interrupter circuit breakers w thermal ol circuit breakers w magnetic ol limit switches foot switches pressure vacuum switches liquid level switches temperature actuated.
For example a switch will be a break in the line with a line at an angle to the wire much like a light switch you can flip on and off.
1 master element 2 time delay starting or closing relay 3 checking or interlocking relay 4 master contactor 5 stopping device 6 starting circuit breaker 7 rate of change relay 8 control power disconnecting device 9 reversing device 10 unit sequence switch 11 multifunction device 12 overspeed device 13 synchronous speed device 14 underspeed device 15 speed. The diagram symbols in table 1 are used by square d and where applicable conform to nema national electrical manufacturers a ssociation standards. When performing any electrical wiring for any of these switches devices you will be able to identify the type and location of the various devices from this list of switch symbols. Here is a standard wiring symbol legend showing a detailed documentation of common symbols that are used in wiring diagrams home wiring plans and electrical wiring blueprints.
