Smart switch without neutral requires capacitor. How to connect?)


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Old 04-18-21, 06:26 AM
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Smart switch without neutral requires capacitor. How to connect?)

I had an electrician install some outdoor floodlights when I wimped out for diy. I want to try and replace the switch for for them with a smart switch but noticed there is no neutral
wire in the box. I found smart switches that don't require a neutral wire by adding a capacitor at the light end. can I put the capacitor at the led floodlight connection to get it to work? Do I need a capacitor for each light to get them to work? The lights just have posts to connect the wires to.
 
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Old 04-18-21, 08:37 AM
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What does your smart switch instructions say?
 
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Old 04-18-21, 08:45 AM
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That sounds like the type of wifi switch that needs current flow to operate. I haven't heard of one that uses a capacitor. There have been ones that used a resistor at one of the fixtures.

Leave us a link to what you are looking at.
 
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Old 04-18-21, 03:57 PM
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Old 04-18-21, 05:16 PM
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Interesting. The cap allows enough current to flow to keep the unit operating.
My only sticking point is that it doesn't carry a UL listing and is a product of China.
I'm not inclined to use units that don't carry a UL listing due to liability issues.
 
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Old 04-19-21, 11:46 AM
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I'm thinking that if you use this device and that capacitor ever shorts out that you just may "Crash and Burn"
 
 

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