My current setup: Main panel has 60A 240 breaker that feeds Generator subpanel which has 10 circuits on it. The Gen Feed to the subpanel comes from buried 10-3 in my shed. That works well for running the generator. The subpanel has the metal slider to lockout Gen from Main feed.
Now I'm considering an electric mower, which would preferably be stored and charged in the shed, plus I wouldn't mind a light switch out there. So with the infrastructure of 10-3 underground, but with opposite polarity (i.e. generator input prongs) in the shed, is there a safe way to switch from "Generator feeding house" to "House feeding shed"? Obviously, or maybe not, I don't want to power the shed/mower with the generator.