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Old 01-09-2010, 12:49 PM   #1
 
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136v at breaker


Hi Folks, I have a quick question, I was at a friends house he had a few outlets in the basement not working. Found out the problem was in the wiring and solve the problem. While I was trouble shooting I check the voltage at the breaker to make sure it was working and it read 136v I then checked the voltage at every breaker and they were all reading 136v the question is, is this normal? I have never had a reading of over 125v at a breaker before. He has a Federal-Pacific panel(which I heard many bad things about) don't know how old it is but it looks fairly new(10-15yrs) and a 150amp service. Thanks. Ron
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Old 01-09-2010, 01:56 PM   #2
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did you check the voltage at the main? if so was it still 136V on each leg to ground.
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Old 01-09-2010, 02:09 PM   #3
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You could have one or more of the following problems:
  1. Bad tester
  2. Bad neutral
  3. Bad poco transformer
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Old 01-09-2010, 08:25 PM   #4
 
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Quote:
Originally Posted by richgriffith View Post
did you check the voltage at the main? if so was it still 136V on each leg to ground.
I should have, but I didn't, thought about it after I left. was too busy with the other problem. will check it next time I'm there. If it is 136 or 120 what's your suggestion?

Also will check volt meter at home, make sure it's working.

Did some research on Federal Pacific I guesstemated wrong on the age of panel, It has to be from the 80's

Last edited by runronno; 01-09-2010 at 08:28 PM.
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Old 01-09-2010, 09:37 PM   #5
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Quote:
Originally Posted by runronno View Post
I should have, but I didn't, thought about it after I left. was too busy with the other problem. will check it next time I'm there. If it is 136 or 120 what's your suggestion?

Also will check volt meter at home, make sure it's working.

Did some research on Federal Pacific I guesstemated wrong on the age of panel, It has to be from the 80's
They (FPE products) were taken off the market in the (very) early '80s. Some FPE panels and breakers look amazingly like new. Wish they were as good as they appear to be. Especially those that are switched Horizontally (R-L/ L-R) in larger panels.
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Old 01-10-2010, 03:31 AM   #6
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Replace the battery in your tester. When mine is going dead, it gives some high readings like that.
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Old 01-10-2010, 09:05 AM   #7
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Measure the 240 volt supply as well. If it is high then you should call the POCO. Based on your readings it should read somewhere around 270 volts. It is their problem.
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Old 01-10-2010, 11:45 AM   #8
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Quote:
Originally Posted by JohnJ0906 View Post
Replace the battery in your tester. When mine is going dead, it gives some high readings like that.
In my (not so old) Analog Multimeter, no internal (Battery or other) power is used to measure volts. Most likely, it is a Power Company problem.! (No matter what) Don't Drink and Drive, ever!!!
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Old 01-10-2010, 01:32 PM   #9
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if your still getting 136v per leg to ground at the main the problem is most likely on the power companies end. i suggest then to contact them to come out to check there transformer & connections.

Good luck hope this works. keep us informed on your progress. P.S yeah and make sure your batterys. are good in your tester before you test. i had the same thing happen to me as john said above. you still need a good battery. to get your digital reading.

Last edited by richgriffith; 01-10-2010 at 01:42 PM.
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Old 01-10-2010, 01:56 PM   #10
 
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Well son of a b**** you learn something every day. checked my voltage today with meter got 134v reading... changed the battery, 118v at the same outlet. That's why I like to ask questions. Thanks to all. Ron
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