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Old 04-21-2014, 12:07 PM   #1
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Buzzing Lights whole home


Hey Guys-
I just found this site while searching for a possible fix to a warranty problem I'm having for a customer's home. This is a freak problem I haven't seen before. The customer is complaining about every light in his home pulsing/buzzing at all hours of the day. I went to troubleshoot and the lights look like fluorescent lights during warm up (pulsing back and forth like you can actually see the 60hz in the light). There are only incandescents in the whole house and it does it non-stop. I've checked for voltage fluctuations and the power frequency is dead on at 60Hz. This shows across multiple circuits. I thought maybe a problem with the incoming line, so the power company came out and did a simulated load and said everything looks good on their end. I did change the Main breaker thinking that it's the only common point across all circuits.

My first thought was a loose neutral but this doesn't seem to show a high and low side of the phases.

Any idea's what else I can check? I still feel it's the power company but how do I prove that?

Thanks
Kyle

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Old 04-21-2014, 12:14 PM   #2
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Buzzing Lights whole home


xformer?

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Old 04-21-2014, 12:16 PM   #3
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Buzzing Lights whole home


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I still feel it's the power company but how do I prove that?

Thanks
Kyle
get them over there.... have them prove it's not
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Old 04-21-2014, 12:18 PM   #4
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Thought? Are there neighbors? Can you check there too?
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Old 04-21-2014, 12:20 PM   #5
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Checked with neighbors and they have no fluctuation. So it seems like it's not the transformer. They've been out twice now and say it's not them. Any ideas what to check?
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Old 04-21-2014, 12:32 PM   #6
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Probably not the frequency but the voltage that is fluctuating. Could be some load turning off and on. Maybe a stuck sump pump? heater? stuck attic fan?
Can you turn off the circuits one at a time and see if the fluctuating eventually stops with one breaker? Or turn them all off and then turn on one at a time.
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Old 04-21-2014, 01:33 PM   #7
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Probably not the frequency but the voltage that is fluctuating. Could be some load turning off and on. Maybe a stuck sump pump? heater? stuck attic fan?
Can you turn off the circuits one at a time and see if the fluctuating eventually stops with one breaker? Or turn them all off and then turn on one at a time.
I can check by turning off each breaker but I did check at the light socket for voltage fluctuation and it was a steady 122V with the greenlee and 124V with the fluke (depending on who you wanna trust.). No fluctuation at all in that voltage.

Last edited by copeykle; 04-21-2014 at 02:05 PM.
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Old 04-21-2014, 01:57 PM   #8
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whole house ?

did you check the mains are tight... breaker, meter?

neutrals, grounding/bonding tight???
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Old 04-21-2014, 02:09 PM   #9
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whole house ?

did you check the mains are tight... breaker, meter?

neutrals, grounding/bonding tight???
That's where I started. I tightened everything at the breaker box. I changed the main breaker thinking it could possibly be going bad. Basically everything from the customer side of the Main box to the breaker box has been tighten and retightened. I entertained the idea of a loose neutral at one of the receptacles but there are no signs of an unbalanced load. (bright lights on one side of house and dim on the other)
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Old 04-21-2014, 02:15 PM   #10
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I should also note that this home was built in december and the entire home was wiring by me and my apprentice. This problem was noticed by the customer with in days of moving in. I originally thought maybe I had a bad batch of light bulbs and so I started changing the light bulbs and didn't have any luck with that either.
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Old 04-21-2014, 02:15 PM   #11
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Does your meter have a min max setting. The fluctuations could be quicker than you can see or the meter can display. There is no way the frequency is fluctuating.
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Old 04-21-2014, 02:21 PM   #12
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Does your meter have a min max setting. The fluctuations could be quicker than you can see or the meter can display. There is no way the frequency is fluctuating.
Noted. I did not try the min/max setting on my meter. Anything else anyone can think of to try? I don't want to go back to this customer until I have a pretty good plan of everything left to try.
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Old 04-21-2014, 02:55 PM   #13
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Anything else anyone can think of to try?
seance ???
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Old 04-21-2014, 02:58 PM   #14
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haha... I think that's the thing where you get rid of evil spirits... and if that's the case then I appreciate the joke.
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Old 04-21-2014, 02:58 PM   #15
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Back to the beginning..

what kind of customer?
Did you do something?
Was it always this way?
Did they do something?
what changed, or did it happen on it's own....

Did someone die, and will not go to the light?

kidding..

whole house to me is service...

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