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Old 10-10-2021, 06:21 AM
MandoMan MandoMan is offline
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Originally Posted by Malsua View Post
So what you've done is that you have voltage on your ground leg.

While the neutral and the ground are bonded in the panel, they are not the same. A ground should never be carrying any voltage.

The problem, as I see it here, is that you've got a switch that was switching the black leg but your sensor switch needs actual voltage to work which means it needs a supply black, a supply neutral and the switched black.

The red wire is used with a 3 way switch configuration or the 3rd leg for a fan/light. It may not be connected to anything. If it goes into the same wire sheath as the switched black, it's probably up in the ceiling with a wire nut on it.

I see whites in your box, tucked away. The white wire must go to that and not to the ground. When a GFI senses voltage on a ground leg it'll trip. Code also requires that grounds do not carry any voltages and now it does. That needs to change.
This is puzzling. There should be a green ground wire coming from the switch, but I don’t see it. The bare wire coming from the switch housing is grounding the housing, but you need the green wire to ground the switch itself. A three-way switch is necessary here. This looks more like a three-way with the green ground missing than like a two way. I’ll attach Lutron directions for a 3-way switch and a 2-way. But this one is different because it’s missing the green wire. Unless this is a new model with a combined ground, in which case this IS a 3-way and should probably be connected any black to any black, any black, to any black, white from switch to red, and ground to ground. But the directions show a blue wire from the switch, not white. A white wire would never be used for a ground wire! Check the wiring diagram that came with the switch. It may be a newer model. (While I’ve wired and rewired houses I’ve owned, I’m not an electrician, so don’t trust me on this.)
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