Talk of The Villages Florida - View Single Post - Replace laundry room light switch with motion sensor
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Old 10-09-2021, 06:10 PM
Malsua Malsua is offline
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Quote:
Originally Posted by Fastskiguy View Post
OK all of you Iris owners, you know where I'm coming from! You walk in from the garage and turn on the light to the laundry room, take 2 steps, then turn it off again. On and off all day long. Well I thought...let's replace one of these switches with a motion sensing switch and all will be well with the universe.

Instructions couldn't be more simple.....black to black, bare wire to bare wire, and white to white....er....what is this pink / purple wire??!! What??

Well white to pink / purple didn't work but white and bare to bare worked fine except now there is a slight hum to the light fixture (LED) that wasn't there before.

Does any of this look remotely right? Any comments you have would be most appreciated

Joe
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.