Most common is the single pole switch the type used to control a light fixture from a single locationthe next most common is the three way switch which is commonly used to control a light fixture from two different locations. This might seem intimidating but it does not have to be.
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Diagram of a three way light switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. For example a long hallway or stairway might use a pair of three way. 3 way switch wiring diagram line to light fixtureline voltage enters the light fixture outlet box. Wiring diagram 3 way switch with light at the end. If you have any problems with these switches it may be best to call an electrician. The black and red wires between sw1 and sw2 are connected to the traveler terminals.
Three wire cable runs between the switches and 2 wire cable runs to the light. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. With these diagrams below it will take the guess work out of wiring. Wiring a 3 way light switch. Unfortunately not all 3 way switches are wired the conventional way. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram.
Take a closer look at a 3 way switch wiring diagram. The diagrams below show the conventional wiring for 3 way switches. Interested in a 4 way switch wiring diagram. In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. No longer allowed after 2011 nec if no neutral wire in switch boxes 3 way switch wiring diagram light fixture between switchesline voltage enters the first 3 way switch outlet box light fixture is located between switch boxesno longer allowed after 2011 nec if no neutral wire in switch boxes. Wall switches used to control ceiling light fixtures or other fixtures come in three types.
See alternate 3 way switch wiring configuration for another way 3 way switches may be wired.
