Someone I know recently had to replace everything in their house that was plugged into an outlet due to damage from high voltage. This was due to a bad generator voltage regulator. The generator pumped in 170V and fried everything. This circuit will serve as protection for exactly that by disconnecting the generator if the voltage goes above 140V. I'm using voltage sources to represent a residential split phase generator. There is a manual push button to reset the relays if the circuit trips so that the issue will not go unnoticed.
