Changing A 3 Way Switch

Changing A 3 Way Switch. How do three way switches work? Timer switch has four wires, red white blue white and black.

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Three-way switches control an electrical load from two locations. First, the body of the switch will be thicker and bulkier than that of a single-pole switch. This will change the path the electricity can take, and that's how.

A three-way switch is built and wired a little differently than a conventional single-pole light switch.

The other traveler wire gets capped off.

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One of the most common areas for this is the top and bottom of stairs. Three-way light switches control a light from two locations, such as from both ends of a staircase or hallway. For the benefit of those who thought they were following your directions (like me at first), I had If you've been thinking about changing over to LEDs but aren't sure how to do it and which to buy, this story is for you.