im going to have to consult my mentor on this hes a master electrician. It dosnt make sense to me why someone with a RV can not have this installed at their residence. Whats the big deal about it? Is there any "legal" way to do this and what do you suggest?
OK, first of all I am trying to help you understand where you are at. You saw an RV and got stuck on the fact that 551.77 B was what you were going to have to go by. If you read 551.1 then it tells you that it is for RV sites. Not for someone to plug there RV into at their home for the winter. That's the "fun" of the code you must first know what the install would fall under. This would simply fall under 225.
Now, there is no reason you cannot install the panel you are looking at, the same as there is no reason you cannot install a DG box with a recp. and bubble cover for this application. Both are legal. It comes down to what you are telling the customer.
I need to explain to the homeowner why he cant just simply have his 1 receptacle.
Lets play a scenario game: You quote the customer $500.00 for the install.
You tell the customer that panel MUST be installed and you install it. Then six months down the road the customer finds out it wasn't really necessary. Then he puts you on the list to tell every one he knows that you are a rip off because he now thinks you over charged him for something he didn't need.
Now, You install the box and recp. the customer wants. He is happy. He tells people yea, he did a good job for me. No one can say you sold him something he didn't need.
Your cost for both ways are going to be about the same except the difference in the panel verses a WP box, recp. and cover.
You have really put more money in your pocket by doing what is called for.
Now, if you present both ways to the customer. Say $500.00 for the WP box or $600.00 for the panel. Then the choice is his and he cannot accuse you of cheating him.