An electrician removed a defective breaker from a friend's house but he never returned. A year later she had me replace the breaker. (Evidently those outlets were not terribly critical.)
I did a routine check of her AC line and found it horribly unbalanced.
One side was 108v the other 125v
I did not have time to investigate, and will have to get back there this week end. What do you folks think? I'm guessing it's a bad ground.