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Q
Two 2000W Inverters in parallel implies 4000W combined. The 73500i manual says maximum of 25 amps, which is 3,000W at 120 volts. Why does it not provide 30 amps as the 30 amp receptacle implies?
Asked by Sparky1 2 years ago

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Open Reply - Champion Tech
Each generator can sustain 14.16A by itself which is 1,700 watts. Combined, the generators can sustain 28.32A or 3,398 watts. There is no circuit breaker on the parallel kit to limit this output to 25A. Our earlier 2,000 watt inverters had a rating of 1,600 watts and I believe they simply rounded the number for simplification. Since you can also parallel a 1,600 and a 1,700 running watt inverter generator, I believe this further complicated this and it was left alone. The parallel kit will support the full combined wattage of two inverter generators. There is no wattage loss when running in parallel. Sorry for any confusion

Note they advertise the 2000w as 1600 running. You can't parallel the older one with a new one because the kit won't fit.

They claim the two in parallel will run a 15K RV air conditioner ok.

That business with the 30a receptacle seems weird to me. A Honda 3000 is rated at 2800VA at 23.3a. But it has a circuit breaker.

kfp673 wrote:
Has anyone run 2 of the 2000 was Champions in parallel and can confirm it will run a single 15k AC without issue? $399ea at home depot seems like a great deal. Buy 2 and get 3200 running watts and only 45lbs each?? Seems like a better option than a single 3400 watt 95lb beast. Thoughts?

My 2 Riobys would run 2 13.5K High efficiency. They would run a normal 15K and an Atwood 13.5K as long as they did not start at the same time. They would run a MH with a 15K with absolutelly no rpoblems. I don't a reason why the two champion would have an issue.

My parallel Champion 2000's run my 15k AC without any problem.

Has anyone run 2 of the 2000 was Champions in parallel and can confirm it will run a single 15k AC without issue? $399ea at home depot seems like a great deal. Buy 2 and get 3200 running watts and only 45lbs each?? Seems like a better option than a single 3400 watt 95lb beast. Thoughts?

pianotuna wrote:
30 to 50 adapter feeds both legs but only 3600 watts is available assuming zero voltage sag from 120 volts.

I'm pretty sure my autoformer would get a *real* workout running two roof air units from a 30 amp shore power supply.

If you must do this--then at least monitor the voltage. When it sags below 107 it is time to reduce the load--or add an autoformer, or both.

Agreed!!!
Don’t get me wrong, the fact that I tested it and maybe did it while monitoring it does not mean that is a good idea...

My Honda 3000 was 126.8v no load and with a load of 1910VA (by Kill-a-watt) that dropped to 122.7v

Don't know what one a/c draws but I could run one 15 size in the 5er on a 15a circuit with power management operation.

When the a/c cycles what happens? What if they both cycled at the same time? One end of the RV would have a different climate than the other, so would they operate randomly and only cycle at once as a fluke? What happens if they both do it?

That 1910VA was with a 100a charger. There is controversy whether it should have a 20a or a 15a plug, depending on how it is used. ISTR there is a rule about "continuous" vs "temporary" and the charger is portable but can be a converter (installed) too, but not always on. What do they call an RV air conditioner for that code application?

As to the whole 1800 and 3600 deal, you have that 80% margin requirement for circuit breakers, etc. Is that how the 100 amper can run on a 15a circuit pulling 1910VA?

Is two air conditioner operation on a 30a the same thing for getting above 80%?

What if the no load of a gen is 120v instead of 126v? Likely to get so low as to hurt the air conditioner (which can't take low voltage like a converter can and survive ok)

Perhaps there needs to be more definition of which exact gens at which no load voltages you can "get away with it" and which ones you can't. From the info seen so far, it doesn't look like a good idea to generalize that they can all do it. Also one same watt rated gen may drop more from the same no load under the same load, depending on the specs of the gen--engine size or whatever.

30 to 50 adapter feeds both legs but only 3600 watts is available assuming zero voltage sag from 120 volts.

I'm pretty sure my autoformer would get a *real* workout running two roof air units from a 30 amp shore power supply.

If you must do this--then at least monitor the voltage. When it sags below 107 it is time to reduce the load--or add an autoformer, or both.

2oldman wrote:

BFL13 wrote:
Somebody said if you use a 30-50 you only get one leg of the 50

That would make sense.

The 30 to 50 adapter I have feeds the 30 to both legs of the 50. On 30 amps you can still run 2 acs but nothing else. With this setup, we were pushing the connections slightly beyond capacity, but we were monitoring it closely. We always had 1 or 2 people looking around asking question.

BFL13 wrote:
Somebody said if you use a 30-50 you only get one leg of the 50

That would make sense.

Somebody said if you use a 30-50 you only get one leg of the 50 and that isn't enough to run two air conditioners. Or else I read that wrong or it is wrong info.

(The above states two air conditioners running from the 30-50 and a TT was also plugged in to another 30, but it does not say if that TT had its air conditioner on.)