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Old 03-15-2014, 04:24 PM   #15
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Quote:
Originally Posted by scamp View Post
Don't forget about hypervoc
Just read up on it - thanks!!!
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Old 03-16-2014, 12:26 AM   #16
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drboyd- As I recall I had to make sure my Voc was well under the charge controller max rating (I can't remember the %). The panels can exceed their Voc when more than normal sun brightness hits them, say reflecting off of white beach sand, snow, etc.
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Old 03-16-2014, 08:11 AM   #17
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I think it's somewhere around 15%increase , but I think wiring and charge controller ,breakers so on should be allowed for 25% increase,the panels produce more power when cold(hyper voc) this is why there should be a minimum clearance under the panels for cooling. My (home)panels setup is 6 -220watt panels 3 in series and 2 runs parallel they are called 24 volt panels, there open voltage is higher 36.6 volts per panel ,there short circuit current is 8.1 amps per panel ,total wattage 1320 watts, I have seen 1490 watts produced about 4 days ago under these conditions-10 Celsius ,snow on the ground,full sun but not optimum tilt angle to the sun off by aprox 5 degrees ,and these panels are aprox 6 years old ( the output drops with age) I can produce at this time of the year just over 10 kilo watt hours per day just to give you the idea this supplies all my energy use during the day at home , no big appliances running 220 volt),for a r.v you don't need all this power ! To me most people need aprox 200watts of power due to rainy days and your limited to most of the time two 12 volt batteries, to store power yes you can get away with less but you have only so much roof area to install panels and no you will not be able to run a.c with solar power on your airstream (you need way to many solar panels and batteries
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Old 03-17-2014, 06:42 PM   #18
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Drboyde I'm not sure on your gauge of wiring from panels if you have a 8 gauge and your running 2 100 watt panels ,your good to hook up in parallel and if your running a 12 volt inverter, your two 100watt panels should produce aprox 16.6 amps and with hyper voc maybe 19 amps and that's if you don't have a long wire run , it would be better if you had 6 gauge wire then you wouldn't have to play with a switch box etc.
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Old 03-17-2014, 09:46 PM   #19
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I actually checked with the controller manufacturer and they said it would work OK. If the controller has a melt-down, oh well.
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Old 10-16-2017, 09:39 PM   #20
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here is a list of potential bypass diodes from one of the major OEM.

http://www.st.com/content/st_com/en/...roductId=SC541

these are Schottky diodes. they are the main ones for this type of application
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