3 way switch
TRANSCRIPT
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LIGHTING CONTROLS
3-WAY SWITCH
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3-WAY SWITCH
It is a lighting control that can turn “off” or turn “on” a lighting fixture in two different locations. It is called a 3-way switch because there are 3 conductors connecting the switches.
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3-WAY SWITCH MATERIALS
2 Pcs SPDT switch1 lamp holder/outlet1 lighting fixture/bulbWires2 Pcs Utility Box
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3-WAY SWITCH DIAGRAM
SPDT SWITCH BSPDT SWITCH A
Lighting Bulb
Conductor
Return Line
Live Side
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3-WAY SWITCH OPERATION
• The operation of a 3-way switch is very simple:When the two switches are in the same
position –both in position 1 or both in position 2 – the bulb is “off”.
When the two switches are in opposite or unlike positions – switch A in position 1 and switch B in position 2 ; or switch A in position 2 and switch B in position 1 – the bulb will turn “on”.
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SWITCH POSITIONS
Position 1 Position 2
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Sw A in position 1; Sw B in position 1Bulb is “Off”
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SW A in position 2; Sw B in position 2Bulb is “Off”
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Sw A in position 1; Sw B in position 2Bulb is “On”
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Sw A in position 2; Sw B in position Bulb is “On”
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Circuit Realization
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CIRCUIT REALIZATION