simple demonstration of two 3-way switches leading to a load
Switch 1 on the left is switched from the top black line to the red line on the bottom thus resulting in energizing the load. After this switch 2 is switched from the bottom red line to the top black line resulting in de-energizing the load and the light shuts off.
Both switches are able to turn the light/load on and off by making or breaking the circuit in one location or another at switch 1 or switch 2.
3-way switches
https://www.youtube.com/watch?v=6_TpKdYeQaU&app=desktop
4-way switches
____________________________________________________________________________Below left bottom wire is the ground, the right bottom wire is the line from the breaker panel (you can tell because it is splices with other traveler line wires), the two other black wires are to two different loads. The other white wires are the neutral travelers spliced together to lead to the loads.
Below is from
https://www.physicsforums.com/threads/synchronizing-switches.848481/
The right lower black screws are the common terminals. The upper red and black wires are travelers. The white neutral wire travels straight to the load and the grounding screw implies that ground is understood (upper left screw of S1& S2)
3-way switches
4-way switches
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The Black hot wire energizes the fans and the Red hot wire energizes the lights.
With both black wires terminated the right switch energizes the fan's motor.
As with the Red wires terminated the left switch energizes the light setup on the fan.
The Bottom displays if the fans provide only 2 hot wires (Neutral & Ground understood)
The left switch follows the red wire which is terminated to both fan 2's motor and light setup
The right switch that follows the black wire is terminated on both fan 1's motor and light setup.
Left switch energizes fan 2's motor and light
Right switch energizes fan 1's motor and light.
(ignore the scribble at the bottom right: the black and red wires in the bottom right hand corner are not connected together in any way
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SEEK ADVICE BEFORE ATTEMPTING
When installing a fan
1. Make sure you have all the parts
2. put together the fan blades first
3. connect fan blades to body of fan
4. connect bracket to the fan box installed within the sealing (the fan box connects to a stable structure above ceiling.)
5. install bracket to the ceiling
6. Install fan brace or holder to bracket on the ceiling
7. Splice and connect wires
. after body and blades and covers are ready place
8. IF YOU ARE ABLE (consult a professional about your qualifications or ability.) pick up entire fan and place on hook/holder/bracket that is secured to the ceiling.
9. Splice and connect wires and then screw holders onto place.
Suggestion: use an impact electric screwdriver for connecting fan-box to the ceiling as well as the hook that will hold the fan.
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When installing light fixtures be sure to check bracket and how it attaches to the light first. I struggled with one needlessly only to find out the screws could have been threaded through the bracket. Then install the rest.
