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lights blinking #191608 01/04/10 09:30 PM
Joined: May 2005
Posts: 15
mike collins Offline OP
I have a residential house wired in rx single phase, which has a intermitten blicking of lights, they do not go off they just dime.
Things I have done or checked.
Power co replaced neutral splice at weatherhead.
Tightened every connection in panel.
Checked ground wire at street side of water meter.
Pulled meter and check connections, which were fine.

The dimming seems to happen on every circuit, not just one.

My next step is to call power co. again to check meter,and 230volt lines.
Any ideas out there?

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Re: lights blinking [Re: mike collins] #191609 01/04/10 09:48 PM
Joined: Nov 2002
Posts: 790
wa2ise Offline
Do any lights get brighter at the same time as other lights get dimmer? The neutral at the power company's transformer could be bad, and no amount of solid ground connections in the customer's house will help that. The power company would have to fix that.

Do the lights in neighbors' house (fed by the same transformer) also dim, and at the same time? In addition to the above possible bad neutral at the power company transformer, could be a bad connection on the primary side of the power company transformer, which obviously you don't want to touch!

Re: lights blinking [Re: wa2ise] #191610 01/04/10 10:32 PM
Joined: May 2005
Posts: 15
mike collins Offline OP
The house next door which is off the same trans. does not have this problem.
I wonder if the meter might be defective.
Thanks for your response

Re: lights blinking [Re: mike collins] #191612 01/04/10 11:56 PM
Joined: Mar 2004
Posts: 947
twh Offline
Look for something starting, or trying to start. It might be a motor in an old fridge or freezer. The weather is cold, so it could even be a large electric heater or furnace blower.

Re: lights blinking [Re: twh] #191615 01/05/10 03:36 AM
Joined: Jul 2002
Posts: 8,379
Trumpy Offline
Ever thought about an under-sized service?
Also, have you listened to the panel to see if there is a bad phase busbar in there at all?

Re: lights blinking [Re: twh] #191619 01/05/10 08:49 AM
Joined: May 2005
Posts: 15
mike collins Offline OP
Thanks I will check

Re: lights blinking [Re: mike collins] #191621 01/05/10 09:27 AM
Joined: Jun 2004
Posts: 613
shortcircuit Offline
I would have POCO check all connections at street. I had a problem and they fixed the connection at the weatherhead and were about to leave and insisted they take a look at the street side connection and sure enough there was the problem. Old street in Weston MA, and the connections were corroded at the transformer end.


Re: lights blinking [Re: shortcircuit] #191622 01/05/10 10:52 AM
Joined: Aug 2002
Posts: 402
jdevlin Offline
Did the POCO check only the neutral connections? They should check all the connections

Re: lights blinking [Re: mike collins] #191623 01/05/10 01:43 PM
Joined: Jun 2006
Posts: 34
CDS Offline
Had this problem before , and went round and round with power company . Turned out that they dont check connections behind the meter , I had to meet them there , they pulled the meter and I tightened loose neutral in meter base .

Sorry ,I just read you already did that . A logger at panel would tell you if it is inside or outside .

Last edited by CDS; 01/05/10 01:45 PM.
Re: lights blinking [Re: CDS] #191624 01/05/10 01:46 PM
Joined: Jun 2006
Posts: 34
CDS Offline
One more thought , if it is SE cable from meter to panel , check for corrosion going through concrete block , etc .

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