Nova Kool RFU 8320 Refrigerator Installation - Page 21 - Escape Trailer Owners Community

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Old 01-27-2015, 01:27 PM   #201
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How is the Nova Kool working out?
..so far just fine but I have only been out once. I may go to the desert in a few weeks and can't wait to try it this summer.
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Old 01-27-2015, 03:30 PM   #202
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Good to know the solar panels won't add much resistance. By the time we put the kayaks and bikes on the truck (Ford F-150 Eco Boost), loaded up the Casita and truck, we were getting 15/16mpg average, some of that in hilly and mountainous areas. With 2 panels on the Escape, and the portable 80W we already had, we hope to leave the 3000W propane generator behind (heavy little bugger). Everything's a trade-off~

Santacruiser's idea about taking off the boat racks is great. We may do this for the trip west to pick up the Escape. Don't know yet...
Gae
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Old 01-27-2015, 05:41 PM   #203
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By the time we put the kayaks and bikes on the truck (Ford F-150 Eco Boost).....
You've already got half the battle won Gae. You have the right truck.
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Old 01-27-2015, 06:14 PM   #204
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Thanks--it's big, but we love it.
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Old 02-01-2015, 01:59 AM   #205
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Steven,

how did you wire the 3 panels?
any issue mixing the 95s with the 160?
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Old 02-01-2015, 11:28 AM   #206
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Steven,

how did you wire the 3 panels?
any issue mixing the 95s with the 160?
These panels have waterproof MC4 connectors which can be plugged into each other making parallel connections. It is important to use panels with the same output voltage (about 17 volts). Then the panel watt values can be mixed. The 160 I have is the highest watt panel I could find that is low voltage. Panels used on houses are much higher voltage. Mine are all around 17 volt. Short, pre-assembled cables are available with MC4 connectors on each end when a pair of wires isn't long enough. I bought a couple of short 6' cables and plugged them in together for the front panel.

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
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Old 02-01-2015, 07:12 PM   #207
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Quote:
Originally Posted by hotfishtacos View Post
...It is important to use panels with the same output voltage (about 17 volts). Then the panel watt values can be mixed. The 160 I have is the highest watt panel I could find that is low voltage. Panels used on houses are much higher voltage. Mine are all around 17 volt. ...
Mixing the high voltage (34-36v) panels with the low voltage (17-18v) panels does no harm except to your pocketbook - IF - there is a blocking diode in each panel before the common connection. ( And there really should be.) The lower voltage panels will not contribute wattage until the drain on the solar system exceeds the wattage of the higher voltage panel.

The impact to the pocket book is that you paid for high voltage and then lost that power in the regulator when it drops it down to 13.7v for charging the battery. The difference in 34 to 13.7 is converted to waste heat. Plus, the higher voltage panels tend to be twice as expensive, so you have lost $ in two ways.

There is a partial exception to this rule-of-thumb. If you spend the big $$$ on a MPPT regulator then you will get all the power the big panel will produce. (A good MPPT regulator can run $400 and up.)

Now, if someone gives you a house-style panel for free, then go for it, but monitor the regulator for excessive heating.

Bottom line: Mixing low and high voltage panels could work but it gets expensive and complicated. Escape trailers are happier with 17-18v panels.

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Alan
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Old 08-07-2015, 01:11 PM   #208
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new to this forum. I can not get the pictures. need help!!!!!!
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Old 08-07-2015, 02:43 PM   #209
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Do you mean that you can't go back to posts that had pictures and see the photos?

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Old 08-07-2015, 03:58 PM   #210
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Could be because this is the first post....
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