I know similar questions have been asked over and over again. Mostly about running an AC off one 2000 watt unit. I have a 28' work and play with a rooftop unit. Not exactly sure of the AC specs. I have two Yamaha EF2000is inverter generators that I plan to use to power the camper. Will these two, bridged together, run the AC, lights, etc. with causing harm to the generators or any any electrical components?Thanks.

Well assuming your RV is not more than 30 amp, and the yamaha's can be paralleled, and the generators are rated for 1800 watts each continuous, then yes.

merc1100sc wrote:I have two Yamaha EF2000is inverter generators that I plan to use to power the camper. Will these two, bridged together, run the AC, lights, etc. with causing harm to the generators or any any electrical components?Be aware that the Yamaha EF2000iS doesn't play well with any Progressive Industries EMS as detailed in this disclaimer so if you're protecting your rig with one of these units you'd want to remove it from the circuit before powering your rig with these gensets. Can't say whether Yamaha has solved this issue with their newest version of this genset, the EF2000iSv2. If you don't use an EMS while running on shore power (a mistake IMO) then this wouldn't be an issue for you.

I have two of the same gens and the Yamaha Sidewinder parallel adapter and it powers the AC on my 2015 SandSport just fine. I've read the new V2 have a much cleaner sine wave for sensitive electronics. Being a mechanic I must say these gens are very easy to work on as far as carburator cleaning. Pop the back cover off, remove the air filter housings it, remove the studs that hold the carb to motor, clean and put back together. Probably a 10 min job once you've done it.

I have two Yammy ef2000's and the genuine Yam Twin Tech cable. The parallel configuration would not reliably start my 13.5 rooftop until I installed an aftermarket start capacitor on the rooftop. After installation of the cap, the parallel configuration will start and restart the rooftop no problem. A single Yam will not start the rooftop, nor will the parallel configuration running in Eco mode.

GordonThree wrote:A single Yam will not start the rooftop, nor will the parallel configuration running in Eco mode.Probably would if you were to equip your A/C with a Micro-Air 364 Soft Starter, as reports from Honda EU2000i owners say it absolutely does work.

Pair of Yam EF2000is to run roof AC? | Good Sam Community

12 Replies

SoundGuy
Explorer
Dec 29, 2016
merc1100sc wrote:
I have two Yamaha EF2000is inverter generators that I plan to use to power the camper. Will these two, bridged together, run the AC, lights, etc. with causing harm to the generators or any any electrical components?

Be aware that the Yamaha EF2000iS doesn't play well with any Progressive Industries EMS as detailed in this disclaimer so if you're protecting your rig with one of these units you'd want to remove it from the circuit before powering your rig with these gensets. Can't say whether Yamaha has solved this issue with their newest version of this genset, the EF2000iSv2. If you don't use an EMS while running on shore power (a mistake IMO) then this wouldn't be an issue for you.
bid_time
Nomad II
Dec 29, 2016
Well assuming your RV is not more than 30 amp, and the yamaha's can be paralleled, and the generators are rated for 1800 watts each continuous, then yes.

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Pair of Yam EF2000is to run roof AC?

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