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3 Wire Toggle Switch wiring

Angrey

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So I know one wire is ground, one wire is source power and the other wire is post switch power to the device.

The ground is for the status light.

Most of the installation diagrams I've seen call for the center wire to be ground and the switch toggles between the outside wires. But this switch has 2 red and one black wire (black on the outside). Is it still correct to assume the middle (red) wire is ground?
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Angrey

Angrey

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Where ever you found that graphic, did it happen to say the diameter of the mounting hole?
 

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LSchicago

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