A Honda EU2000i generator powering a Coleman Mach 8 Cub air conditioner. The key here is the EU2000i is set to Eco Throttle mode. In this mode the engine only works as hard as the load power requires, thanks to the excellent inverter design. Few other RV air conditioners can work with this generator set to Eco mode. The generator is hardly straining when the compressor is on steady state. The engine does take a second or two to spool up in respond to the huge surge current when the compressor (as well as the condenser fan) switches on.
0:00 fan runs at Lo speed
0:04 compressor switches on
0:42 compressor switches off
1:35 compressor switches on
2:14 compressor switches off
Here is the video with the Kerstner also set to Eco mode. You can see the generator struggles a lot more when the compressor switches on.
Some may be quick to point out that I am abusing the Honda generator as you can see the overload indicator flickers on for a second or so. I actually feel quite comfortable with the overload protection design. If the excess current prolongs just a bit longer it will trip the overload protection and lock out the load. The key here is the tipping scale between the engine's ability to spool up fast enough to shore up the collapsing voltage, and to ramp up the compressor's RPM, before the overload protection magnitude x time limit is exceeded.
This test is no guarantee that they will work well together in adverse atmospheric conditions. I have a couple of tricks that I can resort to should that be necessary.
the Kerstner went to a Westfalia James Cook Freunde
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