Electrical – How to install a timer with three-way switches

electrical

I currently have a set of lights controlled by two switches. I believe they are both three way switches, I know one of them is.

I am trying to install a timer while keeping the three way switch function. The timer has three wires: Load, Line and Neutral. Model RPLS730B. I need help on how to wire this.

I do not know how the setup is currently wired as far as what each wire does. From observation it is wired as shown below.

Switch 1:

 Black

 Black               Red

 Whites are tied together

Switch 2:

 Red                 Black

                     White

Additionally if someone could explain the current setup and the circuit of each wire that would be great. I do not understand how they are connecting to the lights.

:edit: The traveler on switch one is Black and the traveler on switch two is White.

Best Answer

Thank you all for the help.

I ended up purchasing an Intermatic ST01 which is intended for three way installations. They even have a youtube video that makes the install foolproof. It also does not require a neutral wire, a wire I do not have.

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