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Old 08-25-2015, 05:31 PM   #1
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How much solar panels to operate a 27rss Flagstaff travel. Trailer off grid including ac

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Old 08-25-2015, 05:33 PM   #2
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Going to depend on your load

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Old 08-25-2015, 06:03 PM   #3
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"Including the ac", You are going to need a lot and a bunch of batteries to store any excess power you may generate.
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Old 08-25-2015, 06:38 PM   #4
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When you start talking about running an A/C, you are talking about MANY more components than just solar panels.
You will need an Inverter, a minimum of 5 deep cycle, high amp hr batteries, LARGE solar controller, heavy gauge wiring [8 gauge] for panels to controller, 04-06 cables from inverter to batteries, 8 x 100 watt solar panel at least. An automatic transfer switch is a big help, but can be worked around with some trouble. Several large amp fuses and at least 2 breakers to disconnect panels and batteries from controller.
If you want to run a small A/C [13,000 btu] for 3-4 hours, then you can scale down SOME, but not much. Maybe 6 x 100 watt panels.
Batteries are the heart of the system and without them, meaning usable amp hrs, you will be very limited as to what you can run and how long.
Make sure you use a MPPT solar controller as they are much more efficient than a PWM unit.
Depending on where you live or camp, your exposure to optimum sun conditions will be a big factor. Here in SE Georgia, we get over 12 hours a day of sun during the summer and about 8 during the winter months.
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Old 08-26-2015, 01:46 PM   #5
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I have 400 watts of solar panels and it works great for everything except the AC. I have looked at running the AC but you are looking at 1000-1500 watts to run the AC after it gets started. You would need like already stated a lot of panels I would think 8 but more like 10 100 watt panels with about 1000 amp hours of battery. The battery weight would be around 600 lbs.

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Old 08-26-2015, 02:02 PM   #6
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a fully charged 200Ahr battery bank would run AC about 45-60 mins before it needed to be recharged. Remember there are very high inefficiencies in solar equipment ( panels, controllers, cabling ).


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