You should be able to run both on 30A just fine. We do it all the time. As Jim pointed out, it's the starting load that kills you. Chances of both starting at the same time are rare. We have had both units try to start at the same time, twice in 10 years. When that happened the first time, we were on 50A campground power and it tripped the breaker. The second time, we were on the generator and it tripped also. I always make it a point to start one and wait a couple of miinutes before switching on the second one. We also watch and make sure to shut off one when using the microwave, or toaster.
Chet18013