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Old 02-26-2015, 10:50 AM   #31
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Quote:
Originally Posted by Grant & Kathy View Post
I don't know what A/C ETI installs but the A/C on my previous 3 trailers all required 30 amps. To get 30 amps you will need either a really big generator or 2 Honda 2000 generators coupled together.



Grant

Correct Grant. The low profile Dometic ETI uses requires 30 amp input.
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Old 02-26-2015, 11:12 AM   #32
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Originally Posted by rbryan4 View Post
Correct Grant. The low profile Dometic ETI uses requires 30 amp input.
Hmmmm - i was just told by eti that the 11000 btu ac that they use can be started and run when using a honda eu2000i.

ken
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Old 02-26-2015, 12:09 PM   #33
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I've test run mine with the eu2000i, granted I'm not in TX and only ran it for 15 minutes or so.
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Old 02-26-2015, 12:15 PM   #34
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Hmmmm - i was just told by eti that the 11000 btu ac that they use can be started and run when using a honda eu2000i.

ken

Just looked it up Ken. You're right. It will run on 115v ac input.

-->Compressor Loaded Amps: 9.5
-->Fan Motor Loaded Amps: 3.1
-->Compressor-locked rotor amps: 53.0
-->Fan motor-locked rotor amps: 8.8

So, with a Honda Gen you could run just the AC, but nothing else.
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Old 02-26-2015, 01:02 PM   #35
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Old 02-26-2015, 01:03 PM   #36
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So, with a Honda Gen you could run just the AC, but nothing else.
If it's hot enough to run the AC, what else would you run inside the Escape, using the generator? Sure, not the microwave, but you should be able to get by with the LED lights, for example, right?

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Old 02-26-2015, 01:42 PM   #37
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Quote:
Originally Posted by rbryan4 View Post
Just looked it up Ken. You're right. It will run on 115v ac input.

-->Compressor Loaded Amps: 9.5
-->Fan Motor Loaded Amps: 3.1
-->Compressor-locked rotor amps: 53.0
-->Fan motor-locked rotor amps: 8.8

So, with a Honda Gen you could run just the AC, but nothing else.
I am confused. Does anyone know what:

Compressor-locked rotor amps: 53.0
Fan motor-locked rotor amps: 8.8
is?

Further down on the Dometic Penguin II — Low Profile Air Conditioner spec page it says: Minimum generator size - 1 unit 2.5 KW

The spec page for the Honda EU200i says:
AC Output 120V 2000W max. (16.7A) 1600W rated (13.3A)
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Old 02-26-2015, 01:44 PM   #38
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We've run our air-conditioner many times without issue using our Yamaha 2400. I don't remember if we were running anything else on a/c, but all you're other d/c items work just fine (lights, fridge, d/c outlets, etc).
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Old 02-26-2015, 02:08 PM   #39
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Need help understanding the power systems in the trailer please

Quote:
Originally Posted by Grant & Kathy View Post
I am confused. Does anyone know what:



Compressor-locked rotor amps: 53.0

Fan motor-locked rotor amps: 8.8

is?



Further down on the Dometic Penguin II — Low Profile Air Conditioner spec page it says: Minimum generator size - 1 unit 2.5 KW



The spec page for the Honda EU200i says:

AC Output120V 2000W max. (16.7A) 1600W rated (13.3A)

Locked rotor amps just means the max amps it will draw when the rotor is locked and can't turn. The reason they publish this is that a compressor motor or a fan motor will momentarily draw locked rotor amperage when it starts up. Think of it as a short period during start up where the compressor uses more power.

As to the other specs, 2.5 KW is the same as 2500 watts. The smaller Honda generator may run the ac, but it's clearly not intended to, and I doubt it could power anything else while doing so. To reliably power the AC, the specs are telling me to use a generator that produces at least 2500 watts.
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Old 02-26-2015, 02:53 PM   #40
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I believe the term Compressor-Locked Rotor Amps is a confusing way of stating the amount of current that’s required to start the compressor. The fan on an air-conditioner starts only once when first turned on, then runs all the time, but the compressor starts and stops as needed to keep things cool. You can hear when the compressor starts, both from the air-conditioner and from the generator if you’re using one.

When we purchased our Casita in 07 I read all kinds of posts where people were having issues powering their air-conditioners with the Honda 2000. They would go through specific light-off procedures (sometimes successfully) in order to start and run their A/C units, they would link two Honda 2000s together, purchase the Honda 3000, or they would install “Soft Start” circuits in their air-conditioners.

Soft Start circuits consist of capacitors that are charged during operation and used for power assist during compressor start-up. Adding the Soft Start circuits would allow the use of a smaller generator. I've been told, I don’t know where, that the newer A/C units all have the soft start circuits installed. I can’t verify that because we own the Yamaha 2400 and have never had a problem.
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