The common terminal is the middle terminal in the spdt knife switch or if you are using a household switch it would be the brass colored terminal. The number of throws indicates how many different output connections each switch pole can connect its input to.

Spst Spdt Dpst And Dpdt Explained Littelfuse
Single pole single throw switch diagram. A double pole single throw dpst switch controls the connections to two wires at once where each wire only has one possible connection. Awesome single pole light switch wiring diagram wiring. The other terminal is for a second hot wire called a switch leg that runs only between the switch and the light fixture. The center position is off. Leviton 20 amp mercial double pole toggle switch white r52 and. Double pole single throw switch dpst circuit.
Double pole toggle switch wiring diagram. Leviton double pole switch wiring diagram collections of wiring diagram dual light switch inspirational wiring diagram for a. The other 2 would be silver colored. In other words its like two simple switches controlled by a single actuator. They have two screw terminals plus a ground screw. Single pole switches are the most common light switches in a home.
The switch mechanism has two positions. A double throw switch can also have a center position such as on off on. The videos shows what is a single pole switch. Single pole single throw switch. This is type of switch is called spst single pole single throw and its action is described as on off. 2 pole toggle switch wiring diagram sample leviton 20 amp mercial double pole toggle switch white r52 and.
One screw terminal is for the hot wire that feeds the switch from the power source. Bination two switches wiring diagram anything wiring diagrams. Fresh single pole switch symbol electrical outlet symbol 2018. Single pole switch diagram. The dpst switch for example has four terminals however is a double pole dp and not a four pole 4p switch. A double pole switch is like two separate single pole switches that are mechanically operated by the same lever knob or button.
When the switch is connected one way for circuit a and circuit b the lamp and led will both be on. Double throw closes a circuit in the up or down position on on. Leviton presents how to install a decora bination device with for. Closed on and open off but it is called single throw because only one. Diagram 3 makes use of the single pole double throw switch. Single throw closes a circuit at only one position.
A single throw switch is a simple on. A simple on off switch has one set of contacts single pole and one switching position which conducts single throw. You can see above how a double pole single throw switch can be used to put a circuit in any of 1 of 2 modes. The two most common types are single throw and double throw. Below is an example of a circuit which utilizes a double pole single throw switch. The dpst switch often appears in circuit breakers where it is used for 240 volt circuits with each pole carrying 120 volts.
Single pole double throw switches.