Electrical – Alt hot white and red wires, neutral black? How to connect motion detector switch

electricalswitch

I'm replacing a standard switch with a Hubbell ws2000w. The light is on a 3 way, I'm only replacing one of the switches. The hubbell switch has a black (line), red (load), green (ground) and yellow (traveler) wire. My switch seems to be off. It was wired white (alt line), red (alt line), black (neutral??), and copper (ground).

I used my multimeter to read 120 voltage on the incoming line. That's how I got the 0 reading on the black wire when the second switch was in both positions. The white and red would switch hot based on switch two's position.

Nothing is marked on the line for the switched neutral but I'm curious if I need to do more than just tape/mark the hot lines. Also, how exactly would I connect this hubbell switch?

Hubbell red to Line red?

Hubbell black to Line white?

Hubbell green to Line copper?

Hubbell yellow to nut or Line Black or??

Also the hubbell switch had a hole for neutral but nothing to connect to.

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Best Answer

I'm hearing a lot about the traveler. 3-way switches don't have a traveler. They have two.

This is what a 3-way circuit looks like:

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As you can see, one of the travelers is hot and one is not. Throwing the first 3-way switch switches which one is hot.

So anytime you have a 3-way switch, notice the two wires that are on brass screws, or not on the "common" terminal. Those are the two travelers. What I do is go straight for my roll of yellow tape and tag both of them yellow on both ends. In your case that is the red and white wires. They are not neutral or hot or anything else you want them to be, they are travelers. But depending on your smart switch they can be re-tasked to be something else.

Since you are operating in 3-way mode, you must read the Hubbell documentation for how they want you to wire the circuit. It also depends on how the 3-way complex is wired. Sometimes you do not have a choice and are not able to install the smart switch in the location of your preference simply because there needed wires are not present in that location.