- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
Had a guy call me to check out a hum and buzzing noise in the panel. The hum seemed to not be anything I would worry about as I've heard that before. However, when breaker for the air handler for the AC unit was turned off and back on, you could hear the buzzing/arcing sound.
I checked all the lugs and terminals for breakers and all were tight. There is an outside disconnect so I checked the lugs there and all was good.
Also had the POCO come and check their connections and all was good there.
The noise seemed to be coming from the main breaker. The panel is a SqD Homeline 200A main breaker. So I was going to contact them.
They also wanted me to change out some dimmers for regular switches as their LED lights would sometimes flicker badly when on the dimmer. The dimmers had been changed by me just a few weeks ago. But the guy said the lights started to flicker again. I told him the LED lights, which are the wafer recessed type lights, were probably not working right with the dimmers. The dimmers were 3-way and I didn't have any 3-way regular switches with me.
The guy said he would pick some up and change them out.
Here's the odd part.
He called me a while ago and said he got them changed. He says all the flickering, humming and buzzing have stopped. I knew the flickering would stop, but what would changing dimmers out for regular switches have to do with the arcing/buzzing sound coming from the panel?
I told him to keep an eye on it and listen for the arcing sound. I am not convinced that it has stopped!
I checked all the lugs and terminals for breakers and all were tight. There is an outside disconnect so I checked the lugs there and all was good.
Also had the POCO come and check their connections and all was good there.
The noise seemed to be coming from the main breaker. The panel is a SqD Homeline 200A main breaker. So I was going to contact them.
They also wanted me to change out some dimmers for regular switches as their LED lights would sometimes flicker badly when on the dimmer. The dimmers had been changed by me just a few weeks ago. But the guy said the lights started to flicker again. I told him the LED lights, which are the wafer recessed type lights, were probably not working right with the dimmers. The dimmers were 3-way and I didn't have any 3-way regular switches with me.
The guy said he would pick some up and change them out.
Here's the odd part.
He called me a while ago and said he got them changed. He says all the flickering, humming and buzzing have stopped. I knew the flickering would stop, but what would changing dimmers out for regular switches have to do with the arcing/buzzing sound coming from the panel?
I told him to keep an eye on it and listen for the arcing sound. I am not convinced that it has stopped!
