3 And 4 Way Switches

3 and 4 wat switches

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  Typically most  homes has a 3 and 4 way switch conveniently installed in area where illumination is needed at a distance.

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Below are images of a 3 and 4 way switch. Click on images for more information and for possible purchases. 

This videobelow shows how to install a 3 and 4 way switch and also wiring  a 4 way switch into a 3 way circuit. The video however will help as you follow the visual. In this circuit you can also add lights by connecting in the same manner as you would do in the 3 way system. Now you can watch these two videos courtesy of DIY.

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How A 3 and 4-way switch circuits work

Controlling a light with A 3 And 4 Way Switch.Read More  

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Here is a typical circuit in its four possible states.:

2LightSwitches

The switches must create a complete circuit for current to flow and the bulb to light.Read More

4 waySwitches end

Note that the light can be placed anywhere in the return wire, shown above as white.Read More

3 waySwitchesMidLite

Other variations

Here are another couple of variations of a 3- and 4-way switch in  circuits.Read More

4 waySwitches

By marking the wire as above, you are informing anyone working in the box later that this is the wire that will deliver (occasionally) 120 volts to the switch.Read More

4 wayFeedLight

Troubleshooting A 3 and 4 Way Switch Circuits

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Wiring A 3 And 4 Way Switch Circuit and 2 Lights

wiring diagram for a 4 way switch with 2 lights

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NEUTRAL WIRE REQUIRED:Read More

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