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Old 06-13-2013, 08:27 AM   #31
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Light flickering/diming problem


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First, does your transformer serve only your house? Is it rusted or black looking? Some older transformers can get pretty nasty. Hopefully no oil is dripping out, that would be a problem in itself.

POCO around here have a list of every transformer on the system with specifications. If you can't find a number on the unit, a quick call should help you identify. They do not need to show up at your house to give you this information. But like most companies, your POCO may do things differently.

Good luck.
Hi Dan

I took 2 pic of the transformer but cant see any identification on it.
a technician from peco came yesterday and said it's PERFECT normal and same stuff happen at his home.. I just cant believe how these people are thinking about it. I will call peco today and try to get a spec.

and there're 3 more house between me and transformer. i'm the last one in the line.

headache!
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Old 06-13-2013, 08:45 AM   #32
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Light flickering/diming problem


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Originally Posted by martingale2012

Hi Dan

I took 2 pic of the transformer but cant see any identification on it.
a technician from peco came yesterday and said it's PERFECT normal and same stuff happen at his home.. I just cant believe how these people are thinking about it. I will call peco today and try to get a spec.

and there're 3 more house between me and transformer. i'm the last one in the line.

headache!
I would say lights dimming slightly (especially when the a/c comes on) is perfectly normal and is to be expected. But if every appliance you use makes your lights flicker, you have a problem somewhere.

How far do you think you are from the transformer? If you've got a great length of wire between your service and the transformer, that could explain some of your problems.
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Old 06-13-2013, 08:47 AM   #33
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Light flickering/diming problem


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I would say lights dimming slightly (especially when the a/c comes on) is perfectly normal and is to be expected. But if every appliance you use makes your lights flicker, you have a problem somewhere.

How far do you think you are from the transformer? If you've got a great length of wire between your service and the transformer, that could explain some of your problems.
the distance from the meter to the transformer is about 300 ft.
is that too long?
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Old 06-14-2013, 06:38 AM   #34
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Light flickering/diming problem


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the distance from the meter to the transformer is about 300 ft.
is that too long?
Maybe, I've read in other forums that some POCO's limit their secondary drops to 250 ft. Also most state regulators place restrictions on voltage fluctuation say plus or minus 5% of normal.

I think you have reached a point where you need to bring in a professional with the proper testing and recording equipment.
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Old 06-14-2013, 08:17 AM   #35
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Light flickering/diming problem


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Maybe, I've read in other forums that some POCO's limit their secondary drops to 250 ft. Also most state regulators place restrictions on voltage fluctuation say plus or minus 5% of normal.

I think you have reached a point where you need to bring in a professional with the proper testing and recording equipment.
2 PECO guy came in yesterday and concluded that the size of the line from transformer to my house is too small. they are going to change it in a few weeks.

So finally PECO start to do some real work. hope it can solve this.
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Old 06-14-2013, 08:57 AM   #36
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Light flickering/diming problem


Maybe your problem will be resolved then
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Old 06-14-2013, 09:19 AM   #37
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Light flickering/diming problem


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2 PECO guy came in yesterday and concluded that the size of the line from transformer to my house is too small. they are going to change it in a few weeks.

So finally PECO start to do some real work. hope it can solve this.
Good goijng Martingale.... Had the POCO not run a new service line when they did your service drop,? or had they put in too small a line.? (or were we just mixed up... nothing wrong with that... just helps in understanding)

Keep us posted please.... because this was a great fun mystery trying to solve.

Best

Peter

EDIT: When they do, make sure they look over your meter pan very closely also.

(If this is your problem, I think your jumping a light onto the service (upstream of your main) and finding flicker under very nominal start-up load, was a ingenious diagnostic idea.)
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Old 06-14-2013, 09:20 AM   #38
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Light flickering/diming problem


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Good goijng Martingale.... Had the POCO not run a new service line when they did your service drop,? or had they put in too small a line.? (or were we just mixed up... nothing wrong with that... just helps in understanding)

Keep us posted please.... because this was a great fun mystery trying to solve.

Best

Peter
sure Peter. will update with pictures after they done the work on transformer and lines..
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Old 06-21-2013, 08:57 AM   #39
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Light flickering/diming problem


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Originally Posted by MTN REMODEL LLC View Post
Good goijng Martingale.... Had the POCO not run a new service line when they did your service drop,? or had they put in too small a line.? (or were we just mixed up... nothing wrong with that... just helps in understanding)

Keep us posted please.... because this was a great fun mystery trying to solve.

Best

Peter

EDIT: When they do, make sure they look over your meter pan very closely also.

(If this is your problem, I think your jumping a light onto the service (upstream of your main) and finding flicker under very nominal start-up load, was a ingenious diagnostic idea.)
PECO guys just came this morning. They said with the order to change triplex, then I told them the triplex line, which is the line coming into the house, is already changed 1 month ago.
THey hook up a measuring device which shows 2 voltage readings, and run it for a while, then I showed them how it dimmed when my a/c kicks off, we did the voltage measurement when I kicked off my shop vac a few times.
They told me it's ALL PERFECT NORMAL. How surprised can that be. I told them my neighbours are not having the issue.

They finally said , will ask someone to attach a record machine which records the voltage and current for a few days and send somebody to check the transformer. the transformer is 10KW and I told them probably it's too old, due for an update.

So, as of now, the light still blinks, and I will see if they can change the transformer.
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Old 06-21-2013, 09:07 AM   #40
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Light flickering/diming problem


Martingale.... Really...THANK YOU for the update... alot of people "forget"

Sounds like you're making headway, and my money is on Dans26 who had the same problem with a 10KW transformer.

And apparently, you are not crazy, and maybe/probably a better electrician than your POCO. (Oh my lights are supposed to flicker when I plug in my toaster)

Best

Peter
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Old 06-21-2013, 09:11 AM   #41
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Martingale.... Really...THANK YOU for the update... alot of people "forget"

Sounds like you're making headway, and my money is on Dans26 who had the same problem with a 10KW transformer.

And apparently, you are not crazy, and maybe/probably a better electrician than your POCO. (Oh my lights are supposed to flicker when I plug in my toaster)

Best

Peter
hoo. ya, i'm not crazy, , i'm almost get used to it. but not my wife.
she want a massage chair, which is a 3-4k investment with probably over 100 motors in it, the voltage/current spike when a/c kicks can damage the motor and ruin the chair and the enjoyment. so we wait to solve this thing. as for time being, we can only buy a $200 food massager at walmart. lol!
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Old 06-21-2013, 09:34 AM   #42
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Light flickering/diming problem


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hoo. ya, i'm not crazy, , i'm almost get used to it. but not my wife.
she want a massage chair, which is a 3-4k investment with probably over 100 motors in it, the voltage/current spike when a/c kicks can damage the motor and ruin the chair and the enjoyment. so we wait to solve this thing. as for time being, we can only buy a $200 food massager at walmart. lol!
So.... Explain again to me why you want to fix this???.... Sounds to me like the POCO is saving you from $2800 to $3800...

Best
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Old 06-21-2013, 09:35 AM   #43
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So.... Explain again to me why you want to fix this???.... Sounds to me like the POCO is saving you from $2800 to $3800...

Best
haha, you made my day MTN. sounds like I should really kick PECO people away and stay with this. LOL.
but the blink light is really really a headache. it drive me crazy.
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Old 06-24-2013, 02:47 PM   #44
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Light flickering/diming problem


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Martingale.... Really...THANK YOU for the update... alot of people "forget"

Sounds like you're making headway, and my money is on Dans26 who had the same problem with a 10KW transformer.

And apparently, you are not crazy, and maybe/probably a better electrician than your POCO. (Oh my lights are supposed to flicker when I plug in my toaster)

Best

Peter
PECO just changed my transformer from 10KW to 25KW. but it still flicks.
OMG. what else can we change......
I'm at the end of the line. but does that make a lot difference if the transformer is brand new?
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Old 06-24-2013, 03:06 PM   #45
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Light flickering/diming problem


Martingale...... Shoot.....

Couple questions:

Did they look over your meter pan closely.... for good contact, corrosion, especially the neutral.

Are you still getting the flicker on a light load... I think you were using your shopvac before.

Is that flicker still occuring in front (upstraem) of your main.

(Makes you wonder if the service connection bug might be poor.... I've never made, or watched closely, that splice.... no idea if you can F it up
I know you had your triplex replaced just recently, but wonder if it might be a very rare coincidence.... one time trying to jump my son's car, we had a bad jumper, so we swapped out a brand new one.... took us an hour before we figured out the brand new one was bad also

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