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Author Topic: ARCO  (Read 1663 times)

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howard

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ARCO
« on: December 15, 2014, 06:25:18 PM »
Hi. I have some old ARCO panels, some with two terminals, some with four. Can anyone tell me what the wiring scheme is? These are the old, now brown, round cell panels. Probably Corizzo(?). Thanks, H.
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Mary B

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Re: ARCO
« Reply #1 on: December 15, 2014, 06:37:20 PM »
Set them in full sun and use a multimeter to measure the voltage on each set of terminals, then use the meter to measure shorted amps from each panel. Then wire them to match the voltage/current available. Need more information from you to help.
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OperaHouse

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Re: ARCO
« Reply #2 on: December 18, 2014, 10:06:16 AM »
Open circuit voltage ans short circuit current are a good start, but don't celebrate if those numbers are good.  I have a couple Photowatt panels that seemed pretty good from those tests but on a load they were junk with many low output cells.  Figure a resistor that will give you those amps at  3/4 of the open circuit voltage.
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