I have a 19 YO Generac mdl: PP5000 (5000 running watts/6550 starting watts) brushless genset powered by a 10HP Tecumseh.
The generator ran through a 6-circuit transfer switch, which powered just the essentials, well pump, furnace, fridge and a few lights. This set-up worked ok but during extended power outages showering with ice-cold water in the winter isn't exactly a joy.
I recently did away with the transfer switch in favor of an interlock breaker so I could managed the loads and choose which circuits I wanted to run i.e. the electric water heater.
After tinkering with the governor the generator fluctuates between 121-124 volts output on L1 and L2 with no load @ 3650-3670 RPM and with the 3500 watt resistive load of the water heater it drops and fluctuates between 115-118 volts @ 3550-3570 RPM. I then pushed the generator a little more by adding another 1500 watt resistive load and the voltage dropped an fluctuated between 108-111 volts for both L1 and L2.
This appears to be the best I could dial it in and wanted to know if this sounds about right?