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Old 04-19-2014, 11:27 PM   #29
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Bill,

If your CPAP is Phillips, you can just get a 12 volt cord and run it on 12 volts. Did that for my wife. It works fine.


Andrew
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Old 04-19-2014, 11:30 PM   #30
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What I was told by the supplier when I started thinking about this is that a Magnum 2012 would do the whole job. I just don't see how it would charge and invert at the same time.
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Old 04-20-2014, 09:25 AM   #31
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thanks Awiegel. I do have a 12 volt cord and do it that way now. But I think the inverter would give me some flexibility in where I plug it in.
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Old 04-20-2014, 11:07 AM   #32
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I just bought my first airstream. It has a 15,000 btu ac. the Honda site says the 3000 is good to 13,500 btu. What size do I need to power the 15,000? I see a lot of people say the 3000 but honda says no? also new to forum, so excuse me asking here.
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Old 04-26-2014, 11:08 PM   #33
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Update on the search:

I have found an inverter which is advertised as being able to supplement a generator. It is the Xantrex Freedom SW-12 New Generation. The Ad says: "A key feature enhancement is ‘Generator Support Mode’ which enables the Freedom SW to supplement a generator when AC loads exceed the generator’s capacity."

This unit will charge the battery bank correctly with multi level charging, automaticly switch between shore power and battery and apparently will help the little Honda 2000 over the rough spots on cycling the A/C. SO, what do you suppose the average power consumption of the A/C is? Under 2 kW?

-Andrew
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Old 04-26-2014, 11:53 PM   #34
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I just saw that inverter on the Internet day before yesterday, I was going to post it here but I forgot...

I have seen estimates that a one ton A/C will draw from 12 to 18 amps depending on efficiency and ambient temperature.

But, I can say that my Armstrong unit will NOT trip a 15 amp breaker.

If we assume that it used all 15 amps, which it doesn't, this is 1,800 watts.
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Old 04-27-2014, 12:53 AM   #35
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Magnum Energy also makes inverters that can supplement generator output with inverter output. I have not used one.
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Old 04-27-2014, 12:56 PM   #36
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Quote:
Originally Posted by J. Morgan View Post
I just saw that inverter on the Internet day before yesterday, I was going to post it here but I forgot...

I have seen estimates that a one ton A/C will draw from 12 to 18 amps depending on efficiency and ambient temperature.

But, I can say that my Armstrong unit will NOT trip a 15 amp breaker.

If we assume that it used all 15 amps, which it doesn't, this is 1,800 watts.
Thank you J. Morgan

It is starting to sound like the generator booster inverters from Magnum and Zantrex will help the little Honda take care of starting the A/C and the surge fluctuations, but the overall power consumption is within the Honda 2000 capacity, so perhaps no net battery drain with A/C operation.

This is all indeed promising.

Andrew
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Old 04-27-2014, 01:04 PM   #37
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Quote:
Originally Posted by bgoldberg View Post
I just bought my first airstream. It has a 15,000 btu ac. the Honda site says the 3000 is good to 13,500 btu. What size do I need to power the 15,000? I see a lot of people say the 3000 but honda says no? also new to forum, so excuse me asking here.
Hi B. Goldberg

You will find there is a very big difference in size and weight when you go from Honda 2000 to 3000 or bigger. This is why a lot of folks suggest using two of the Honda 2000 units together. They work in tandem and can do the job you are trying to do.

Since I intend to run primarily off inverter power most of the time and want enough storage to do that, I have 220 aH of AGM batteries and will buy a good inverter charger to work with them. I already have the Honda 2000 and have no wish to deal with anything heavier. This is why I am looking for a way to get the Honda 2000 over the hump on running the A/C without having to carry any extra equipment to do it.

It is starting look like this can be done with a "generator helper" inverter.

Good luck,

Andrew
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Old 04-27-2014, 01:08 PM   #38
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By the way,

Has everyone already seen the lock down setup for the Honda 2000?

LowPro LockDown. Keep what’s yours.

-Andrew
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