The switch simply opens off or closes on the connection between the two terminals on the switch. For example a long hallway or stairway might use a pair of three way.
3 Way Switch Wiring Diagram
How does a 3 way switch work. Before explaining how three way light switches work its important to know how a regular light switch works. Wall switches used to control ceiling light fixtures or other fixtures come in three types. A 3 way switch circuit is always comprised of two 3 way switches that control lights or devices from two different locations. Using only existing 3 conductors how does this work. Is constantly hot garage light controlled by 2 switches in house and garage. When the switch is on current flows along the black wire through the switch to the light and then returns to ground through the white wire to complete the circuit.
If you have ever wondered how this arrangement works and how each switch knows what the other switch is doing then read on. How a light switch works. These are called single pole light switches and they can turn on or off a light fixture from a single location. I must add no it doesnt meet accepted code requirements. In this article we will solve the mystery of three way switches. 2 brass terminals for the 2 traveler wires and 1 common black terminal for the common wire.
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. 3 way switch a 3 way switch has 3 terminals. 3 conductors connected garage to house where opposite 3 way switch is located.
Gallery of How Does A 3 Way Switch Work
