Re:You Know Who Hates AI? Insurance Claims Adjusters
by Jgrubb on Wednesday September 02, 2026 @04:30PM
(#49542049)
I don't know "how big", but I do know that it's a 7.2kV line, and that there are 6 houses on it, and that mine is pretty far away while the other houses are quite close to the transformer.
Like I said, it routinely drops to or below 100v. It's most noticeable after an outage is restored when everyone's hot water heaters and fridges kick back on at once.
I’ve seen half a dozen houses on a single 7.2kV -> 240V 25kva transformer which can lead to problems given the available current on the secondary side is only 104A. As the transformer overheats you get voltage drop, as you’ve noticed ;)
Your supply voltage should be +/- 5% of nominal, 115-125V line to neutral and 230-250V line to line, appliances are generally OK with +/- 10% from nominal voltage.