Is there something wrong with this dimmer switch wiring?

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Old 07-15-16, 07:01 AM
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Is there something wrong with this dimmer switch wiring?

In my new home I noticed the dining room lights with a dimmer switch installed will often make noise or flicker. I think the problem is this green ground wire is not attached to anything but I am not totally sure about that. The other 3 connections seems good to me. I unscrewed the nuts and made sure the wires had good contact and then screwed them on tight again. But the problem still exists. Any ideas?

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Old 07-15-16, 08:28 AM
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Ground is safety not function. Use of LEDs or CFLs can cause those symptoms.
 
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Old 07-15-16, 02:34 PM
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It could be the filaments in the bulbs buzzing.
 
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