Reposting because topic was lost. I received one answer from Roger.
Scenario:Mobilehome park with 192 units. Main distribution is 240/120 3 wire from Edison. All main feeders are 100A 2 pole breakers feeding 4 to 8 pedestals with 50A mains. All distribution wiring is direct burial 1/0 aluminum, no conduits.
Problem: flucuating voltage. When loads are present(at times) voltage (between neutral or ground) on 1 leg lowers to 90 vbolts, while the other side increases to 140 volts. Voltage line to line is approximately 245 volts and fairly steady. This problem exist about 4 to 5 hundred feet away from main distrubution panel where voltage on the losd side of the breakers(at main distribution panel) remains 240/122, steady as a rock.
Has anyone ever experienced this? Any solutions?
