... why do busnuts tend to have this compulsion about redundancy?
1) Unlike being at home, traveling from place to place in a bus keeps changing the rules. Sometimes I can count on "free" electric from a campground pole, some places that's not available. Same goes for pressurized water and a dump station. When you want different choices for different conditions, maybe the term should be "alternatives", rather than redundancy.
2) Many RV systems are notoriously prone to problems. I have twice had a Shurflo water pump failure, but never had a well pump fail at my house (knock on wood). My Suburban propane furnace is currently giving me problems. Although it has been fine for the last year, don't get me started on my Onan generator's history.
3) When I am at home, my bus IS my redundacy for my home systems. But that doesn't work vice versa when I'm 500 miles from home.
4) When I am at home, I know exactly who I can call (and trust) for any repairs I cannot handle myself.
5) At home I have a circle of friends and relatives I know I can count on. I cleared the snow out of six of their driveways for free this week (okay, one of them gave me a case of beer), and I know I could tap them for a favor in a heartbeat.
.... and I DO have redundant systems at home. I have two woodstoves capable of heating my entire home without running my furnace. In addition to the bus' generator, I have a second standalone one I can connect to the house through a transfer switch. You got me thinking about the number of ways I can cook, and my equipment choices (4 propane, 3 white gas, 7 charcoal, 1 wood/coal, countless electric) started getting ridiculous.
Yep, I'm redundant at home, too.