Electrical hookup Question

Also keep in mind that most RV parks have "handymen" or other park employees, that take care of any maintenance problems that happen in an RV park. These are not always licensed electricians and therefore you cannot always assume that the box that you connect your RV to is/was wired properly. IN fact, on this forum many people have checked their park power boxes and found the polarity to be reversed. Chances are this would NOT have happened if a licensed electrician did the wiring. The problem is that licensed electricians cost real money and many RV parks will not spend that money which leaves the RV owner to discover the problem and suffer the consequences. It is foolish to ASSUME that just because you have a 30 amp service plug that it will never have 220 volts present. On this forum we have heard of owners that have plugged their 30 amp cord into their residential 30 amp 220 plug. The same thing can happen in an RV park if the person wiring the box does not know what he is doing.