15/30/50 SHORE POWER PLUG IN ?

philh wrote:
As a mechanical engineer, I don't deal well in imaginary numbers...

Are RV pedestal 50a circuits single phase or two phase?

I think the common term is split phase since you can use either the 240v between the hots or 120v from hot to neutral. Although single phase would be correct based on the single coil source. Some call it two phase since the two hots are 180 out of phase from each other. Definitely not three phase.