Do 15amp and 30amp Circuits have to be In Phase to Work Properly

Published 02/28/2017

Question:

We plugging into the 15amp and 30amp circuits, do they have to be in phase to work properly?

asked by: Ron K

Expert Reply:

Since the 15 amp plug and 30 amp plug both feed into the single 50 amp plug on Power Grip RV Power Maximizer # CAM55025 you would want both the 15 and 30 amp connections to both be single phase or 3 phase, whatever it happens to be. I suspect that if the 15 and 30 amp service outlets were installed at the same time then you would be good to go but if one was added at a later date you would have to inquire with the caretaker of the camp ground. Most likely camp grounds are going to use 3 phase no matter what the amperage rating is because it is the most common type for electrical grids.

expert reply by: Michael H