Using Dryer's NEMA 14-30 outlet for RV shore power

Learjet wrote:
As I said in post #2 do it right and add the circuit. The double 240 or if you have some single 120 CBs you can get those in double to make space for another standard 240 breaker. :)

I had a thought , the 3rd wire on the dryer is not normally a current carrying wire but actually safety gnd so I wouldn't piggy-back these outlets. Maybe I was taught wrong years ago when gnd added to wireing code , was taught to never use the gnd for current carrying, it's there for protection.