Originally Posted by mvnvltn
With the shore power cord right into the 30amp outlet on the front of the generator.
That should work. You need to see if the draw of the cooling
water (March) pump has an excessive "kick" past 20 amps.
Barring that, there are so-called "soft start modules" that promise to allow a smaller (Honda 2000) genset run a larger (Marine Air 12,000 BTU) A/C/heatpump, so you should have no problem with 30 amps (probably more like 22 amps, however) and a smaller draw.
Mitigating factors, however, could include resistance in the circuits due to corrosion
. You need to test for this before you just go throwing more electricity at the problem.
EDIT: I've now read to the end of the thread, and I don't think it's the genset. I think it may be that initial draw or something wonky in the circuit. Hondas can take "momentary" surges up to 50% or so above rated load, if they are working properly. Yesterday, we had power out at the house for five hours, so I took two 50 ft 14 ga. extension cords and ran my Honda 2000. One cord went to a medium-sized newish fridge with lower freezer
, while the other went to an apartment-sized top loading chest freezer
. I started with ECONO OFF to begin, and then switched to ECONO mode. I noticed that when either of them kicked off, the engine
increased revs significantly and then fell back to typical ECONO speed. Had they both kicked off simultaneously, I suspect that would have shut down the Honda.
I ran the Honda for two hours before the power snapped on. Handy little bugger in a pinch! I used about a quarter-gallon of gas, I figure.
It was quite educational. The only time I've killed the Honda with a surge-type situation is by running a 10 inch circular saw with a 10 amp draw and binding the blade. That snuffed out the Honda well enough, but it recovered and with a less-aggressive approach from me, I got the job done.
The above anecdote is supplied only for illustrative purposes. I find the Honda units, even the 1000s and the old 800s, useful and rated realistically.
Which is why I suggested there could be green stuff in your A/C circuits creating heat and resistance. Bears exploring.