Time Switches - How to Wire a Time Switch
By Timothy Thiele, About.com Guide
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Time Switch Connections - Connecting the Ground Wires
Time Switch Ground Wire Connections
Photo: Timothy Thiele
When wiring a time switch, you'll need to connect the ground wires. To do this, I first twist the ground wires together, cut one off shorter than the other, bend a hook on the longer wire, and connect the ground wire to the green ground screw on the face of the time switch. Run the ground wires far on the side of the box, away from the terminal connections. Form them in such a way that they cannot short out against any of the connection points.
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