Our ACE is 30A and I carry two dogbones a 50 /30 and a 20/30 that way I can plug into pretty much anything. Something else I have found to be true is sometimes the 30A plug in at the pedestal is not in good shape. I would guess from being the most used and from people plugging in or removing the power cord without shutting off the pedestal breaker. That causes arcing and can damage the cord and socket. If the 30A socket is loose I will use the 50A if available. Jim.