Learn how four-way switches work and how to wire them in this comprehensive tutorial. Starting with a quick review of three-way switches, we’ll explain the roles of common, traveler, and ground screws, and how they connect to control a single light from two locations. Then, we’ll dive into the four-way switch, showing its internal mechanisms, wiring, and placement between two three-way switches.
Through clear animations and demonstrations, you’ll see how toggling any switch affects the circuit and light, along with how electricity flows through the system. We’ll also explore advanced setups with multiple four-way switches and clarify common wiring questions, including how swapping connections impacts functionality.
Whether you’re a homeowner, DIY enthusiast, or professional, this video will equip you with the knowledge to confidently work with three-way and four-way switches.
0:00 - Introduction to Three-Way and Four-Way Switches
0:11 - How Three-Way Switches Work
1:13 - Understanding Four-Way Switches
1:57 - How Four-Way Switches Function in a Circuit
2:23 - Electricity Flow Through a Four-Way Switch
2:46 - Adding More Control Points with Additional Four-Way Switches
3:06 - Summary and Final Tips
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