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If the wall box features a non insulated ground that is ok just connect that to the green switch wire or secure it around the ground screw on the switch if it does not include a green wire tail.
How to wire a time switch. Use the wire connectors to connect the black timer switch wire to the black wall box wire. When wiring a mechanical time switch begin by connecting the ground wires. Perfect for controlling indoor and outdoor lighting pool filters fans and a host of other devices in and around the home electronic timer switches are the.
What you need to do is to identify the wire that supplies the power which is the line and the wire that leads out to the outdoor light fixture which is the load. Insert timer switch into box. Do the same for white wires and also for the green wires.
Push the timer switch into the box so the flanges on the switch are flush with the wall and aligned with the screw holes in the electrical box. This is done by attaching one end of grounding pigtail wire to the green ground screw on the time switch then joining the other end of the pigtail to the incoming and outgoing circuit ground wires using a wire connector wire nut. Arrange the wires so they fit in the electrical box.
Wiring a 24 hour time switch for outdoor lights. If the box is metal be sure any exposed switch terminals are not touching the box.