steiny93 wrote:
in-laws had a new shed built; the 'rv' plug in 30 amp which had 110volt written all over it was 'professionally' wired to 220volt; wrecked every appliance in their 10 day old diesel pusher
i'd strongly recommend buying an inline type surge protector which does the voltage sense and lock; for ~ $250 you'll never have to worry about getting the wrong electricity into your coach
I find it very hard to believe that a brand new diesel pusher was wired for 30 amps.  Top line class A's are ALL wired for 50 amp.  You can't blow appliances in an RV wired for 50 amps by plugging it into 220 VAC service.  At worst case, you would pop the main breaker.