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Old 06-12-2019, 05:47 PM   #1
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Default Pure 3 energy system

Hello all I have a question about the Pure 3 system in Winnebago's. If your plugged in to shore power (15 amps) can you still run AC?

Thanks

KC
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Old 06-12-2019, 07:38 PM   #2
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Without knowing anything about Pure3, I'm willing to bet yes you can. It wouldn't make much sense to not allow it to run air while plugged in.

At the least, the air should run on off the Pure3 while being constantly recharged by the 120v current.
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Old 06-12-2019, 07:56 PM   #3
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Originally Posted by rowiebowie View Post
Without knowing anything about Pure3, I'm willing to bet yes you can. It wouldn't make much sense to not allow it to run air while plugged in.

At the least, the air should run on off the Pure3 while being constantly recharged by the 120v current.
That would be my guess as well but I was looking for someone with experience.

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Old 06-12-2019, 08:07 PM   #4
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The system appears to have an inverter/charger installed. Typically, inverter/chargers only perform one of those two functions at a time, either inverting or charging but not both simultaneously.

Hybrid inverters are the exception to that but there's nothing to indicate that the Pure 3 setup is using a hybrid inverter/charger.

Some RV air conditioner units will run on a 15A circuit if environmental conditions allow it.

I'd lean toward guessing that it wouldn't work 100% of the time. Hopefully, I'm wrong

-------------------------------------------------------

Note: There are workarounds to make a sort of DIY hybrid system such as installing a second charger with its own dedicated 15A AC shore power inlet. I left the old charger in my Class A when I installed a non hybrid 3,000W inverter/charger. The old charger currently disconnected but my plan is to someday install a 15A inlet for it. Then I'd be able to run the A/C off the inverter while the old charger is supplying a charge to the batteries. At a 50% A/C compressor duty cycle the in and outs might just balance out..... but if not I'd still have much increased A/C runtime on batteries when a 15A A/C connection (or small generator) is the only available option.
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Old 06-27-2019, 07:34 PM   #5
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The Pure3 really has nothing to do with it, if you can run your A/C on 15A then you can run your A/C on 15A. The Pure3 does not load share, when it senses an AC input it switches to that input whatever it may be. If your A/C won’t run on 15A just disconnect and use the Pure3, it will give you 30A.
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Old 06-27-2019, 11:09 PM   #6
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Quote:
Originally Posted by AAFD View Post
Hello all I have a question about the Pure 3 system in Winnebago's. If your plugged in to shore power (15 amps) can you still run AC?

Thanks

KC
When you are plugged in, the Pure3 system has nothing to do with supplying power in your Van/RV. The electrical system automatically senses that is getting outside power and uses that for everything, including trickle charging your batteries. Someone commented above that they do not power share. That is exactly right. So…

I only have 110/120V input built into my van. I have a 13,500 BTU air conditioner on the roof. It is the Coleman Mach PS model, and I have absolutely no trouble running it whatsoever plugged into 15A/110V household plugs. But, I can attest that the average air-conditioner will run, because on my former Winnebago, I had a regular 13,500 BTU air conditioner that I couldn’t run all day long while plugged into only the same voltage outlet. I could not (former Winnebago) however, run the air conditioner & the microwave at the same time. Nor could I use use the vacuum cleaner & the air-conditioner at the same time.
Actually, with my current set up, plugged into the same standard 110V… I can run the air conditioner on high, and still run a 3A battery charger and have all my devices plugged in and charging at the same time.

So the short and direct answer is “YES“ that air-conditioner on your roof will run if you’re plugged into 110 V outlet. Just try not to use much else.
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