Dammit, now spent a bunch of time this morning reading about transfer switches. Need to get one put in this fall. Probably a 10 circuit 30 amp.
Get a auto transfer with a natural gas generator and you will be the favorite neighbor around. The last winter when a storm knocked power out at the farm. I have several calls about getting water and other things when they drive by a livestock facility of mine and I was the only place with yard lights on. Power was off for 30 seconds, 45k generator with auto transfer allowed me to sleep well.