What are you doing to assure the generators remain in phase?
That is Honda's job, not mine. These inverter generators are designed to be used in parallel. They self-sync when you bring them on line according to the --->
(Manual) This is a common practice.... I simply took the construction methods up a notch.
However, I applaud your caution. I will be testing this out one step at a time before actually trying to USE it. Beginning with continuity, opens, shorts, and cross-connections, resistance, etc. of the harness itself.
I have to test the generators individually first to insure that my additions of the propane/natgas conversion AND the hour meters work as intended, et al.
THEN, I will hook them together on the common propane supply setup directly from the trailer frame tap. Then, and only then will I try the parallel harness with no load. Test for proper polarity, voltage, et al. live. THEN, just plug in our Surge Guard (TEP) and let its computer test for polarity, voltage, frequency, phase, etc...
IF ALL that goes well, THEN I will plug the RV into the Surge Guard, and start load testing like I am working up a hot pistol load.... very carefully.