Hi, Bob! I am a real novice, but this was one question I actually had experience with. Our fuse box in the utility room backs up to the wall in my carport, and it was an easy installation for the electrician. All he put in was a 30 to match my RV. I don't recall how much it was, but I am frugal so I bet it was pretty cheap!
I think that our setups should be just about identical...
I've actually got the Missus more than halfway convinced that we need an outside plug for our RV...
The question is: which one?
I'm figuring that a combination 30/20 amp box with breakers that is waterproof would do the trick.
Does anybody have a favorite brand? There are so many out there, that it's easy to get discombobulated during the shopping process.
Be aware that the 30 amp circuit is wired as 120 volt. An electrician not familiar with RVs might wire it as 220 volt. The 50 amp is wired 220 volt and an adapter is only going to use one leg so the coach sees 120 volts
Cannot be more than $75 xtra to get the 50/30/20. Who's to say that your next Tiffin won't be 24' and with 50 amp service (inflatable electrical washer / dryer combo, 3 mini roof top units, two microwaves, residential fridge that rotates on full wall slide to outdoor kitchen, all electric stove, electric heater and even the new gas free electric generator)
Now, that right thar is funnee!!
Pat & Becky & now Katie