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Old 06-24-2014, 11:18 AM   #29
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Not taking a position one way or the other, but looking at the schematic diagram in the owners manual for my 2001i shows that the parallel jacks (nothing more than shielded banana plugs) are wired in parallel with the outlets. So while the second starting generator may synchronize its inverter to the first, I don't see any connections that would facilitate the more complicated explanations of operation expressed here. Creating a cable with two 15A plugs wired to a single 30A receptacle would seem to duplicate the connection provided by the parallel cables between two 2000is. That said, one MUST connect the Y cable to both generators before starting either, and stop both before removing the cable to avoid a shock hazard from what has been called the "suicide cable".

YMMV, etc.

Al
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Old 06-24-2014, 11:30 AM   #30
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Oh and also FYI, the 20 amp receptacle in my shop had a little more punch that the paralleled EU3000 and EU2000.
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Old 06-24-2014, 03:56 PM   #31
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I have never seen the schematics for the Honda EU2000i "standard" and "companion" generators, but I wonder if the inverter in the "companion" is beefed up to provide the higher Amperage output to the 30 Amp RV socket. That way, two "paralleled" generators are only doubling the 12VDC output; and the one inverter in the "companion" generator is providing all of the AC power. (Two 12VDC outputs don't have to be in synch, since they are DC.)

Does anyone know if the inverter printed circuit boards in the "standard" and "companion" generators are the same, or if the one in the "companion" is "bigger" (i.e., has higher output components)?
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Old 06-24-2014, 11:02 PM   #32
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On my schematics, the only visible difference between the 2000i and the 2000iC is the output receptacles. On the 2000i the output of the inverter is wired to the 15A receptacle through a circuit breaker. On the 2000iC, the output of the inverter is wired to a 20A receptacle through a circuit breaker. In addition to the 20A receptacle there is a 30A receptacle that is wired directly to the inverter, but to the same place on the inverter that the 20A receptacle is wired to. On both generators the parallel cable jacks are wired direct to the inverter. Neglecting the circuit breaker, with the paralleling cable installed, both inverter outputs are connected to the 2000i 15A receptacles and the 2000iC 20A and 30A receptacles. If there is any load sharing control, it must be in the inverters because the output of the inverters is the only place the two generators are connected. I have no idea why the 2000iC has a 20A receptacle and the 2000i has a dual 15A receptacle because the output specs for both generators are the same.

I have no idea what this means when a 2000 and a 1000 are connected together. Since there is a sensing mechanism that controls engine speed based on inverter load it could be that the 1000 and 2000 would ramp up equally until the 1000 ran out of headroom. As load increases from that point, the 1000 could remain at full output while the 2000 increased from half to full. But it would all depend on the design of the motor control and only Honda knows how that works.
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2002 Classic 30 Slideout
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2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

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