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Old 03-24-2013, 04:27 PM   #1
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lights dimming throughout house


Hey guys,

I happened to be standing in front of the stove waiting for water to boil and noticed that the light above the stove, which was on, seemed to be dimming for a millisecond every five seconds or so. I figured it might be a light bulb getting ready to go bad so I checked in the bathroom and noticed the same thing. Then I asked my wife if she noticed anything similar and she did as well. Since it seems to be affecting the whole house I was wondering if anyone has any idea what might be the cause. Thanks

By the way, back in the late 80's we had some guy from ComEd, our electrical supplier, come out and changed these cartridge things on the lines where the electrical service attaches to the house.
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Old 03-24-2013, 05:48 PM   #2
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lights dimming throughout house


are any lights getting brighter than normal when others are getting dimmer than normal? if so, bad neutral connection, if not bad load connection. call poco asap to have there equipment connections checked. That is what they did on your house before. are your neighbors having the same problem? If so defiantly poco problem.

until situation is fixed it is a good idea to shut off any and all electronics in the house.

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Old 03-24-2013, 06:24 PM   #3
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lights dimming throughout house


No, there are no lights getting brighter, just the almost imperceptible dimming that I mentioned. I'll give ComEd a call tomorrow and see what they say. Thanks
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Old 03-24-2013, 06:30 PM   #4
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lights dimming throughout house


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No, there are no lights getting brighter, just the almost imperceptible dimming that I mentioned. I'll give ComEd a call tomorrow and see what they say. Thanks
Any appliances starting when you notice this dimming?
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Old 03-24-2013, 06:41 PM   #5
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Any appliances starting when you notice this dimming?
No, this appears to happen all the time.
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Old 03-24-2013, 06:43 PM   #6
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No, this appears to happen all the time.
but you see the lamps dim, then return to their original brightness? What's the timeframe that they stay dimmed?
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Old 03-24-2013, 06:57 PM   #7
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lights dimming throughout house


Well, today as I was standing in front of the stove, the light above it would dim ever so slightly for an instant and then go back to normal. It continues to do that once every four or five seconds, continually, and it is still doing it now. It's just barely visible, and you probably wouldn't notice unless you stared at the same spot for a minute or two.
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Old 03-24-2013, 08:29 PM   #8
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lights dimming throughout house


I would not be waiting to call the power company.
A loose nutral on the incoming power could be the problum and this is very serious and could take out anything that's pluged in.
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Old 03-25-2013, 07:56 AM   #9
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lights dimming throughout house


A voltmeter would come in handy, although some voltmeters have a "smoothing" effect whereby you would not see such a brief drop in voltage.
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Old 03-26-2013, 02:35 PM   #10
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lights dimming throughout house


The power company sent a tech out and he found no issues. The dimming of the lights has now stopped as well. Really strange. I'm guessing that someone nearby was using some power tools or something that needed a lot of power. Oh well, it seems to have resolved itself. Thanks for the replies.
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Old 03-26-2013, 02:39 PM   #11
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lights dimming throughout house


Unless someone was using your power to your house it would have no effect on your lights at a differant location.
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Old 03-26-2013, 04:01 PM   #12
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lights dimming throughout house


Just for kicks...turn off every breaker except the one that powers your stove light and see if it continues dimming on & off.
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Old 03-26-2013, 04:26 PM   #13
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Unless someone was using your power to your house it would have no effect on your lights at a differant location.
Well I thought I had it figured out. Guess I was wrong. I checked the circuit panel and noticed that the three rooms, (kitchen, living room and lower level bathroom), are all on different circuits.
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Old 03-26-2013, 05:46 PM   #14
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lights dimming throughout house


It might be wise to use a volt meter and monitor
your supply voltage for a while.
Sounds like you had a loose connecttion somewhere !
If some lights go up whilst others go down,
that means that it is most likely in the neutral line.

If on the other hand, lights only go down,
then its either a loose connecttion in the hot line,
or not enough power available at the tranny.

Loose connecttions DONT fix them selves,
He obviously moved or fixed something,
he might have done it with out even knowing it.
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Old 03-26-2013, 06:14 PM   #15
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lights dimming throughout house


Thanks for the info. I'll be watching this closely to see if it happens again.

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