4 Wire Ceiling Fan Switch Wiring Diagram To 3 Way. A three-way switch can be used to control the fan and light individually from each location, or combined with one switch at each location controlling both functions. Line voltage enters the switch outlet box and the line wire connects to each switch.
The simple rule to make wiring easy is that the power leg connects to the common lug. There are lots of videos on ceiling fan switches, but here's one more. Three-way switches allow you to control lights or receptacles Four-way switches are very similar in design to three-ways and are used to control lights or receptacles from three or more switch locations.
These diagrams illustrate how to wire a pair of three-way light switches in three different situations.
Three-way switches are always used in pairs.
Must pay attention to electricity safety!! Three-wire cable runs between all and the hot. ALWAYS photograph switch wiring before removing old switch, so mapping to new switch is easier.
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