About 12 years ago I happened to find that my powerline voltage was 132V. And twice that across both phases, so it wasn't a bad neutral. Called the POCO, and got the usual not knowledgable customer service rep. "Are the lights on? Yes. Then what's your problem?" I got her to pass a note to their linemen that the voltage here was too high. Well a few weeks later 2 linemen show up with a digital voltmeter and sure enough the voltage is too high. They pulled the cover off the meter, and it's too high there too. They visit the local substation, find a few bad capacitors, replace them, still the voltage is too high. Turns out the 3 phases feeding the entire town was not loaded evenly. It took about 6 weeks to get it all fixed.
