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Old 02-27-2015, 08:09 PM   #11
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Well I know it will run the a/c, that I did check. Enjoy, hopefully the snow will be gone when you head north.
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Old 02-27-2015, 08:36 PM   #12
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No worries CPA like I said just testing it out :} If need be I can drag the 8500 Honda down to the site and use it lol . Though I may get a buddy to do some judicious tree trimming for more sun before I get there. I would prefer not to run the generator at all.


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Old 02-27-2015, 08:44 PM   #13
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I'm thinking of adding another solar panel and switching to dual sixers. Sam's Club have them for $85/each and the 130 watt panel is about $200- that maybe the way to go. I'm going on Monday for the batteries and once warm weather hits glue the solar right to the roof.
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Old 02-27-2015, 09:44 PM   #14
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I would love to swap out the smaller panel to the 130 watt but have not gotten around to contact ETI for model and manufacturer info to get dimension's to possibly fabricate a mount system. I have read here somewhere that it would not fit in the same location.


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Old 02-27-2015, 10:22 PM   #15
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Here is a spreadsheet I've put together with electrical data & dimensions of a bunch of panels - I'm waiting until the snow melts to make a couple of templates & see if I can add one to the 17.

I believe the choices from Escape (the GoPower panels) are either 95 Watt or 160 Watt. If you plan to parallel the panels, the Vmp should be as close as possible.

Solar Panels
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Old 02-28-2015, 08:23 AM   #16
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Jon,
What is "VMP" mentioned and isn't parallel the preferred method?
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Old 02-28-2015, 08:46 AM   #17
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Hey John,


Thanks , you wouldn't perchance know off hand does it matter to the go power how much wattage / how many panels are hooked to it ? Something to think about for further down the road. I am considering switching to dual 6 volts when the current battery goes. Currently though lol , I have several other mods in various stages of drawing, mock up, build and since I did not win the lottery well lol takes time and money:}


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Old 02-28-2015, 11:12 AM   #18
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Jim - Voc is the open circuit voltage produced by the panel, i.e. what you would read connecting a volt meter to the leads form the panel (under ideal solar conditions) Vmp is the voltage when the panel is producing maximum power, i.e. the voltage when the panel is operating under normal conditions connected to a controller.

If you are using a PWM controller such as the GoPower unit, the panels should be connected in parallel since PWM controllers do not gain output current with higher input voltages. If you had a MPPT controller, there are advantages to connecting panels in series - it reduces current, allowing smaller wiring, and the controller will convert the higher voltage to greater output current. Unfortunately, most MPPT controllers cost much more than the equivalent quality PWM controller so the choice of type depends on the size of the system.

While I'm sure some will disagree with me, for the typical small systems we can fit on fiberglass trailers, it generally is not worth the additional cost of a MPPT controller, but for large systems they make sense.

Cypher - The GoPower controller is a 30 amp unit - if you use the Imp (or more conservatively, the Isc) of the panels & add them, as long as they are under 30 amps you are OK. According to the GoPower site, their controller is designed for 80 watts - 480 watts of panels. One important note - the GoPower 30 amp controller is used in current trailers - an older version (the GP-PWM-25) may be in older trailers, which is a 25 amp controller.
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Old 02-28-2015, 11:23 AM   #19
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Thanks Jon...
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