3 Way Switch Blueprint Symbol

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3 way switch blueprint symbol. As above with the three way switch but here three switches will control typically a light or group of lights. The switch symbols below include spst spdt dpst dpdt make contact break contact two way contact 2 position switch 3 position switch 4 position switch limit switch inertia switch mercury switch and also delay switch such as time delay switch time delay break flow actuate. The 3 way switch symbol is used to describe a pair of light switches which are found in areas such as a hallway or stairway where a 3 way switch is located at opposite ends. 4 way switch the 4 way switch symbol describes one or more 4 way switches which are commonly found in very long hallways or stairways where there is more than two access points.

4 add a small 4 to the upper right corner of the symbol as though you were raising it to the fourth power to. If more than three switches are needed simply place more 4 way switches between the three way switches. As you will see most 4 way switch wiring is placed between the wiring of two 3 way switches therefore a 4way switch is installed with two 3way. 4 way switch wiring 4 way switches provide switching from three or more locations.

If you had three entrances to a room you may want a light switch at each entrance. Draw the second three way switch on the blueprint as well to complete the circuit. Most of the switch symbols can be changed in their appearance style and color to meet the requirements. A three way wall switch is a common type of light switch that makes it possible to control a ceiling light or other electrical fixture from two different locations in a room.

S3 is the blueprint symbol for 3 way switches.