Suddenly no juice

RedFish said
If that was the case... the main breaker in my home panel would match the amperage my power company can supply.
Some of the modern alternators can throw 120 amps. Anyone ever spotted a 120 amp auto fuse ?

I don't know what YOU are thinking but that IS the case. All the alternator supplies goes through that link.

And remember, most these old girls only had about a 45a alternator

Furthermore, All the house can draw goes through the main breaker to your house!!!!