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Old 10-02-2019, 03:08 PM   #1
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Solar Question: No more 50A's after 2000W AIMS Inverter

Question regarding solar on our RV.
We had Solar installed on our Montana, which we love having, however, we have had an issue from the beginning that at first we didn't think too much about,but as we have gone along weve grown more and more suspect that something may not be quite right with the way it was installed. The issue is that our Rig is setup for 50A service when plugged into shore power, but since the solar install we experience the inability to use heavy load appliances such as the coffe pot with say the microwave or even just the living room fireplace by itself without tripping the output circuit breaker located on the AIMS 2000W inverter/charger.
The inverter states that it has an internal automatic transfer switch (ATS) which I had thought should sense power present from the pole and pass that 50A current through to the main breaker panel to supply the circuits as normal and then when unplugged would then switch to the battery bank to supply power limitted to the 2000W rating of the inverter to the main panel.
I called AIMS tech support, but they are saying that the inverter will only allow us to have the 2000W, which seems rediculous to us, but I don't know. Does this sound accurate? And if so, is there a way to wire this thing so that we have the ability to use 50A when available and then switch over to the inverter when we are boondocking?

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Old 10-02-2019, 05:04 PM   #2
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Sounds like you may have the wrong type of inverter, but yes you can add an external transfer switch to bypass the inverter when on shore power. I did that with our old rig after I had an inverter go bad and keep me from using anything that was run thru it. I did it so if the inverter failed I could bypass it. In your case you could use it to bypass the inverter until you wanted to use it. The problem you are having we never had with our 4,000 watt inverter.
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Old 10-02-2019, 05:27 PM   #3
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Yeah, bypassing the inverter is the only way to solve it. You likely only have a 20A breaker for the whole trailer wired into the inverter/charger rather than the two legs of the 50A. The external 50A ATS will solve that problem.
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Old 10-02-2019, 07:16 PM   #4
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Our Inverter is installed in a similar configuration as yours and we do not have a problem running extra appliances. We do have a MAGNUM 3012 Hybrid which allows me to set the amount of power I want to draw from the shore connection and the rest of needed power comes from your batteries. So it sounds like to me your Inverter is to small to handle the load in your configuration. We have had no problems with our trailer power but we also only figure on 30 power coming in. I am not a expert on trailer power but I know a lot of MOC members are and will be posting shortly.
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2000w, aims, inverter, solar

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