Originally Posted by House of Harview
RAurand, I too have (2) Yamaha EF2000IS and I have not used them as of yet for RV'ing. IIRC, these Yamaha EF2000IS have about 1800 watt max as opposed to the 2000 specified. You also lose maybe 200-300 watts when you pair the two together and therefore, your actual running watts with them paired will be somewhere around 3300-3400 watts which should still be plenty for the 13.5K A/C and microwave making this pairing a bit better overall than the Champion 3100 but at a much higher overall price. If A/C is not needed, I think that's where the single Yama will shine as opposed to running the Champ 3100 if ya know whadda mean? ;-)
You are correct in that you do not get max power out of both units (2000 watts max stand alone). You only get 1800 watts max output each when in parallel (3600 watts). I could not find any specific data on continuous power when run in parallel so I have to assume it is 1600 watts each when used in parallel or 3200 watts combined. But, like you said, much better than a stand alone 3100 which is only 2800 watts continuous.
I just got back from a 5 day\4 night camping trip and I could not be happier with their operation, gas consumption, and ease of use. They fit in my pass through easily, only used 10 gallons of fuel the entire trip, easy to carry, super quiet, and easy to start. I had several people comment on how appreciative they were that they were so quiet. In addition to the 15K A/C, I was also able to run the water heater, microwave, GF's curling iron, and the fireplace. Now, not all at one time but it was nice to have the extra headroom without sending the generators into overload.
P.S. To properly start the Yamahas in parallel mode, you first need to ground both units first. Start the first generator and make sure you have the green AC lights on, plug in the second generator power prongs and then start it. Make sure you have the vents open on the gas caps. They are clearly marked.
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King Bed with Java Interior, (2X) Yamaha EF2000isV2
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