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Old 01-23-2017, 08:32 PM   #11
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Allan, I actually was questioning the ability of a non hybrid inverter to be able to switch fast enough from inverted to shore power during the A/C in rush current/start up and keep the compressor running. I've seen friends that do this successfully with a Magnum MSH series inverter which combines the two sources but wasn't sure of a MS series inverter, which to my knowledge, just switches between them. Perhaps your system is the proof that with this particular A/C unit it will work. I would be cool to know what the inrush current is exactly.

-Eric
Excellent point, Eric. Our A/C unit has a hard-start capacitor so it's likely that the capacitor is providing the necessary start-up current and not the coach batteries. In any case, I have personal experience that I can run our roof-top A/C off of a 15 amp shore power circuit. More investigation is required to determine what the inrush current is and whether that current comes from the capacitor or the batteries.
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Old 01-23-2017, 10:44 PM   #12
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Excellent point, Eric. Our A/C unit has a hard-start capacitor so it's likely that the capacitor is providing the necessary start-up current and not the coach batteries. In any case, I have personal experience that I can run our roof-top A/C off of a 15 amp shore power circuit. More investigation is required to determine what the inrush current is and whether that current comes from the capacitor or the batteries.
Do you know the capacitor size?
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Old 01-25-2017, 08:43 AM   #13
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Do you know the capacitor size?
I have not pulled the cover to verify but I believe it is in the range of 140-150 uF. (If it helps, we have the 13.5 kBTU Dometic Penguin A/C.)
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Old 01-25-2017, 10:06 PM   #14
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Thanks to all of you for the valuable feedback!! I learn so much from this forum group.
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Old 01-26-2017, 06:26 AM   #15
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It will apply to many things, but especially electrics, that things can be approached in a simple manner. Once you start digging and dealing with finer details, topics that originally seemed somewhat straightforward can become quite detailed and complex.

Fortunately, within this group there are some very knowledgeable individuals, who are happy to share their knowledge. This place offers quite an education..
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Old 01-26-2017, 06:38 AM   #16
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As an aside, when I updated some parts of my Starcool (1998 vintage) I added a hard-start capacitor. I haven't tried it with a small generator as I don't have one, but now am curious. I'll have to try and check that out.
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