well, i wouldn't put that way
i have a residential fridge, 90-100w while running, thats 1 amp at 120v, 9amps at 12v
but thats 9 amps not 30 amps,
also i have 8 house batteries, a 70amp converter, a 1250w industrial grade inverter, and a heavy charging circuit using "0" gauge welding cable
and 679w of solar power on the roof
there are people that are LP phobic, and people that are NOT
you appear to be scared to death of LP being on while driving, thats OK
turn it off,
but that doesn't mean there are NOT better ways of doing things, than the way you have suggested
you want to wire in an inverter for the fridge, then take the advice of people here, and use the correct wiring, and batteries, and beef up the power system path,
take into account the years of real world use that is here in this advice
not just the numbers, you want to crunch and use
its your RV do what you want, but why complain, when our experience doesn't back up what you want to do, if you want to ignore advice, why ask for it
IF you don't want to follow advice, don't ask for it, you asked, and we answered
you don't like the answers, well the choice is yours, ignore, follow, try to compromise and see what results
No need to make comments other wise about it,
this debate could go on forever like ford vs chevy and the tire debates
you don't what to heed the advice, you want to do your way, we our wasting our time explaining it over and over