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Combining 100w panels (different makes)

solarstuff

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Jul 18, 2020
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Ontario, Canada
Hey guys, I can't find clear data for the brands of 100w solar panels I have. I would appreciate your help?

How would you best mix up these safely without purchasing limiting diodes? I'm using 4x40A Renogy controllers.

Thanks in advance. I don't want my maintenance and spring cleaning to blow up my panels.

2 Renogy 100w 24.3v 4.93A
2 Renogy 100w (compact) 17.9v 6.24A
6 Eco-worthy 100w 20.w 5.2A
6 Noma 100w 18v 5.5A
 
Not sure but it looks like you have Voc specs for some panels and Vmp for others. Most 100w panels will fall in a range of 21vDC to 24vDC for Voc and 17vDC to 20vDC for Vmp. Ideally you would like them as close as possible to preserve maximum output but you can still connect them and take a small hit on output wattage.

Double check the specs. I would go with separate SCC if indeed you have a really big Voc mismatch. (like 24 to 18)
 
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