We have an off-grid cabin. Currently we have a Champion 7500 watt dual fuel generator powered with propane that is connected by a 120/240v cord directly into the cabin's electrical circuit panel. The high wattage and 240v service is needed to power a submersible water pump out in the lake that we use to pump water into attic tanks. When the generator is running, all of the electrical wall outlets in the cabin also are live with regular 120v service.
The current generator is too loud (likely 72+ dba) to run on a regular ongoing basis and we use it only for about 30 minutes every 2-3 days to fill the water tanks. I am interested in adding to our system a very quiet (52-58 dba) low watt 2000-3000 inverter generator for the sole purpose of providing power to an internet microwave receiver, wifi router and 2-3 laptops. The intention is to be able to work a full 8 hr day remotely via computer when at the cabin if necessary. (I know, why not actually take a vacation).
Is it possible to install a transfer switch that would alternate whether the cabin's electrical circuit panel is receiving power from the 120/240 v cord of the Champion 7500 generator or from a L5-30P (120v 30 amp) cord from a 2000-3000 watt inverter generator.
I am hoping to be able to make the regular electrical outlets in the cabin live with 120v service from the 2000-3000 watt inverter generator so we can be flexible where we plug in the internet equipment and our laptops. However the two generators would never be running at the same time. It would be an either or with us only starting one of the generators and using a manual transfer switch to then have only that generator's power feeding the cabin's circuit panel.
If this is doable, would I have the L5-30P go to one 30 amp generator power inlet box and the 120/240 v cord go to a different 30 amp generator power inlet box with the feed from both boxes going into the switch prior to feeding the circuit panel?