A transfer switch is a handy item. We can now switch from our main generator to a backup generator in case we have problems with the big Kubota. Unless we have a bit of wind, we at most have 48 hours of battery power starting from a full charge.
Square-D 60 amp transfer switch with service cable to connect to a generator with a twist lock connector. The Kubota is rated to 50 amps (6000 watts). There are a couple 1/2 HP motors that need a burst of 1800 watts (15 amps) to get started. The charger is set to 20 amps leaving 30 amps to the house for general use. There is a decent amount of wiggle room for the Kubota. When we are in backup generator mode, we will need to take care not to let any of the 1/2 HP motors kick in unless the backup generator is a good size. We did a small test with one of the Honda 2000's and it promptly shutdown when a motor tried to kick in.
Here is the guts of the power generator side of the Kubota. It is a Stamford generator. The main lines into the house were split between the Kubota and the transfer switch. There is a bit more beefy wires in there now. The Kubota has yet to be tested in this new configuration -- the wiring job looks solid. We have had a bit of wind in the past few days to keep us in good standing.