Answer to question 1:An RV is a workplace? What happened to "recreation"?
And shortly after the hazard comes into being it will be removed by the OCPD, right?
How can you remove a dangerous touch voltage before it happens?
RV may not be a workplace; but the place surrounding a power outlet to the RV is.
Answer to question 2:
Answer to question 3:
Further Electrical Design to reduce touch voltage within permissible limits if not already by following the Code only.