Parallel a Honda EU2000 with an EU3000?

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SuperBusTerror
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Parallel a Honda EU2000 with an EU3000?

Post by SuperBusTerror » Mon Jul 22, 2013 3:21 pm

Various people around the Interwebs mumble that this is possible, and there is a video on youtube of a guy paralleling two EU2000s with one EU1000, but I can't find definitive instructions on how to parallel an EU3000 with an EU2000.

Yes, I know it will void the warranty, blah, blah, blah... I don't care.



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CornMan
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Re: Parallel a Honda EU2000 with an EU3000?

Post by CornMan » Mon Jul 22, 2013 3:28 pm

I didn't think it was possible to parallel two mismatched generators.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by Captain Goddammit » Mon Jul 22, 2013 5:40 pm

Yes you can do it, and I have done it myself many times and yes it works great.
You can simply make up a short extension cord with a male plug at each end; plug one end into each generator BEFORE STARTING THEM UP.
Then you can start/stop either or both sets as you wish.
I'll be paralleling two EU2000s with one EU3000 this year.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by trilobyte » Mon Jul 22, 2013 9:03 pm

Moving this over to the Power and Illumination board, since that's a better fit for generator questions. The 2013 event boards are more for announcing camps/projects/vehicles, the Preparation board is more for project prep and problem-solving.

That said, +1 to what the Captain said.

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Re: Parallel a Honda EU2000 with an EU3000?

Post by BBadger » Tue Jul 23, 2013 1:42 am

I'm not sure about the particulars of the Honda EU line of generators and how they sync up, but parallelized generators do need to be phase-matched or else their AC waveforms can interfere with each-other, wasting power or causing damage. Some generators can do it automatically if you hook them up right; if they don't, here's a guide on how to do it yourself if needed.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by Captain Goddammit » Tue Jul 23, 2013 5:25 am

Honda EU series generators do not need to be phase matched other than plugging them together prior to starting them up, they are designed to auto-sync for parallel operation. Cool, huh?!

Honda's parallel operation cables are unnecessary, the parallel operation ports are simply plugs on the front panel wired directly to the power outlets.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by BBadger » Tue Jul 23, 2013 6:43 am

You know, I was skeptical about those claims. So I did a little bit more reading on the subject, but I think you're right about the auto-parallelizing capability of the generators. They appear to do sampling of the waveform if they're connected to another power source, and sync up. It's probably cheaper and more robust for them to just add this capability to the entire power system anyway rather than some sort of specialized circuit found only at the parallel port interface. The higher rated generator will provide most of the current, but the lower-rated generator will help with the load as well.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by Captain Goddammit » Tue Jul 23, 2013 8:54 am

You are correct sir!
I've got three of them and have been doing it for over a decade.
I've found in actual practice that the different size EUs play well together and the smaller one contributes without overloading as you might worry it would.

Since we've buried the earlier post a little I'll say again, plug two (or more) EUs together FIRST, THEN start either or both at any time as you wish. Just don't connect them while they are already running.
And all you have to do is cut the female end of an extension cord off, install a male plug, then plug one set into the other.
And of course do not leave one end of such a cord unplugged and touch the exposed prongs - but if that's not obvious, you should just light your camp with a jar full of lightning bugs.
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SuperBusTerror
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Re: Parallel a Honda EU2000 with an EU3000?

Post by SuperBusTerror » Fri Jul 26, 2013 4:30 am

Awesome-sauce! Thanks for the info.

So, could one theoretically connect, say, two eu2000s with an eu3000 in this manner?

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Re: Parallel a Honda EU2000 with an EU3000?

Post by Captain Goddammit » Fri Jul 26, 2013 5:01 am

Yes, I'll be doing exactly that. As I have beforee!
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Re: Parallel a Honda EU2000 with an EU3000?

Post by ArmedRN » Wed Jul 31, 2019 8:40 pm

Need to revive this thread as the new EU2200i Companion is new since the last post here.

Honda states that the newer eu2200i can only be paralleled with certain eu2000i's with specific serial numbers. My eu2000i doesn't have the right serial number, I'm looking to buy the new 2200 companion with the 30 amp plug and parallel the two and wondering if anyone has this specific experience.

Thanks in advance!

Romie

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Token
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Re: Parallel a Honda EU2000 with an EU3000?

Post by Token » Wed Jul 31, 2019 10:12 pm

If Honda says not to do it ...

The EU2200i are only compatible with EU2000i or EU2000i Companion models within a specific serial number range:

EAAJ-2017305 through EAAJ-9999999
EACT-1000001 through EACT-9999999
Connecting an EU2200i with an EU2000i or EU2000i Companion that is not within the compatible serial range above may cause a low voltage output, which can damage tools and appliances powered by the generators. Units outside the compatible serial number range should only be paralleled with another EU2000i.
Why not find a EU2000i Companion model instead? It was in production through 2018 and plenty available via quick google search.

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Re: Parallel a Honda EU2000 with an EU3000?

Post by ArmedRN » Thu Aug 01, 2019 12:42 pm

Thanks Token.

Honda also says not to do all the ^^^^ stuff that people are doing.

Just reaching out to the community to see if anyone has and would like to hear their opinion.

Thanks!

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Re: Parallel a Honda EU2000 with an EU3000?

Post by Popeye » Thu Aug 01, 2019 3:13 pm

ArmedRN wrote:
Thu Aug 01, 2019 12:42 pm
Thanks Token.

Honda also says not to do all the ^^^^ stuff that people are doing.

Just reaching out to the community to see if anyone has and would like to hear their opinion.

Thanks!
A lot of the stuff Honda and other large companies tell you not to do is because of possible law suits and doing it their way puts more profits in their pocket.
Honda sells the cables to connect 2 generators, but you could use the Captains method and save money and not buy the cable from Honda. Of course if you don't have a clue the Captains method is a little more dangerous- Two male connectors on one cable and not plugging both ends in before starting the gen could give you a shock. If Honda told you to do that, how many law suits would result?

You need to think about WHY you are told to do something and not just blindly follow instructions. You know, Radical Self Reliance.
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Re: Parallel a Honda EU2000 with an EU3000?

Post by Token » Thu Aug 01, 2019 7:09 pm

Though there is allot of truth there ... this one is different.

Honda didn’t explicitly plaster on their website the big warning on what appears to be an unexpected incompatibility.

Think about it. Specific serial numbers work etc.

It looks like the new inverter is not 100% compatible with the old one.

I would be extra cautious connecting any 1000/2000/3000 original issue inverters with the new 2200, regardless of where you get the cables.

I know it’s not what you want to hear, but if you’re going to dish out a grand on a new toy and can get the EU2000 companion ... why risk it?

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Re: Parallel a Honda EU2000 with an EU3000?

Post by ArmedRN » Thu Aug 01, 2019 10:15 pm

Thanks Popeye and Token for the beta, its good to hear it all...I am looking for a used EU2000i Companion, cant find one in my near craigslist, it's the one with the 30 amp plug.

Thanks all! Have an awesome burn

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