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Old 04-28-2016, 06:56 AM   #29
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Interesting video

https://m.youtube.com/watch?feature=...&v=Y6SeSCTAY5o
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MICHAEL

Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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Old 04-28-2016, 07:00 AM   #30
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It's called load management!
An important part of the equation...
Bruce
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Old 04-28-2016, 07:41 AM   #31
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With our 600 amp-hour lithium battery and our Magnum MS-2812 inverter, we have started and run either air conditioner for an hour or so with no generator. There is both a 13.5K and a 15K BTU air conditioner in the Classic. Since we can carry the pair of 2,000 watt Honda generators and a 30 pound propane tank in the truck, we can get a fairly quick recovery of the battery use when we can run them after stopping for the day. The 800 watts of solar will help as with recharging as we drive down the road. Plan to upgrade the solar with one, or if we can squeeze it in, two more 100 watt solar panels.

With the 300 amp-hour lithium battery in our 23D and the Magnum hybrid MSH-3012, either one of our 2000 watt Honda generators could run even a 15K BTU air conditioner as the starting power surge is automatically drawn from the battery by the Magnum. We prefer to carry the unit with the 30 amp twist-lok power receptacle in the car as I built a short 30 amp rated power cord to plug into the new front generator power input socket of the 23D. The generator is connected to the front propane outlet of the trailer. The air conditioner use will require the undivided attention of a 2000 watt generator.

I can still man handle a 2000 watt Honda generator, but the 3000 would require the use of my Harbor Freight hydraulic table lift like mentioned above. I used that table lift to help me install the ProPride on the Classic.

If one has the 50 amp service in their Airstream, the Honda EU7000iS could handle most of the load if properly balanced in the internal wiring, but there would need to be a significant gasoline supply available at over a gallon per hour under full load. The empty weight of 261 pounds would be daunting as well.
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Old 04-28-2016, 11:11 AM   #32
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Yes, you can run on inverter. I hunted down that inverter/converter, because I found a Mercedes Sprinter that had a 8KW generator installed in the rear of the vehicle, but it was too loud to tailgate in and had the rumble of a city bus. I bought the Magnum which is a hybrid. That means it is similar to a grid tie inverter for a solar application, although it's not a solar controller. I bought the extra modules for it to be able to start the generator automatically if the temp inside either the Airstream or the Sprinter gets above a set point or the battery charge falls below a certain percent. Magnum has real engineers that you can talk to if you get their contact info on-line
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Old 04-28-2016, 12:10 PM   #33
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Yes, you can run on inverter. I hunted down that inverter/converter, because I found a Mercedes Sprinter that had a 8KW generator installed in the rear of the vehicle, but it was too loud to tailgate in and had the rumble of a city bus. I bought the Magnum which is a hybrid. That means it is similar to a grid tie inverter for a solar application, although it's not a solar controller. I bought the extra modules for it to be able to start the generator automatically if the temp inside either the Airstream or the Sprinter gets above a set point or the battery charge falls below a certain percent. Magnum has real engineers that you can talk to if you get their contact info on-line

Actually, Magnum's hybrid inverters bear almost no resemblance to grid-tie models.

What the MSH series of inverters provides is 'load support' that allows you to access the power reserve in your battery bank to supplement any insufficient grid or generator source to start and run say...... a roof A/C from a single 2000 watt generator or 15 amp shore cord.

The MSH will seamlessly provide the additional amperage to start the A/C unit and will back off it's assist after the compressor starting surge is complete, allowing the 2000 watt genny to 'operate' the running loads of the A/C alone. The cycle repeats as needed.

The biggest issue to remember is the type of batteries you are using and the size of that bank. Lead batteries are subject to Peukert effect which effectively diminishes the practical, usable size of any lead battery bank by an exponential factor that is dependent on both the size of the load and size and type of battery used.

Lithiums show no effect from Peukert losses.


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