eric
Solar Newcomer
Posts: 12
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Post by eric on May 10, 2019 1:29:19 GMT
Can my Rover 20 handle 3 100 watt panels in parallel. My possibly flawed understanding says yes as each panel (renogy compact 100w) can only output 5.72a (Imp) and that adds up to 17.16a. On my sunniest days, my 2 100 watt panels will get the controller up to around 11.5a.
Please correct me if I'm wrong.
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Post by bupkis on May 10, 2019 15:28:24 GMT
i would not worry about 300w on a 20A controller. IF, that a big IF you exceed 20A charging the Rover will clip any excess.
using Imp is not appropiate for an mppt controller, let's say on a great day your 300w makes 260w. The 260w (at some voltage like 17v x 15.3A), the 260w is transformed to battery charging voltage so @ 13v battery charging you would see 20A of charge. As battery voltage climbs you would see less current, 260w/14v = 18.6A
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eric
Solar Newcomer
Posts: 12
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Post by eric on May 11, 2019 13:47:02 GMT
Thanks. I had bought the 20A controller for space reasons in the RV but I've found room for another panel on the roof if the need arises and they go on sale again. I was hoping I didn't short change myself.
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Post by Admin on May 14, 2019 15:41:13 GMT
Can my Rover 20 handle 3 100 watt panels in parallel. My possibly flawed understanding says yes as each panel (renogy compact 100w) can only output 5.72a (Imp) and that adds up to 17.16a. On my sunniest days, my 2 100 watt panels will get the controller up to around 11.5a. Please correct me if I'm wrong. Yes, you are capable of connecting 300W on a 20A controller -Renogy Team |
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Post by tattoo on May 14, 2019 17:29:47 GMT
I would go with a 40a so you can expand....
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eric
Solar Newcomer
Posts: 12
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Post by eric on May 19, 2019 13:48:40 GMT
300W max's out the real estate I have on the roof of my van and the 20A controller is physically as large as I can go inside the RV.
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Post by tattoo on May 19, 2019 18:13:47 GMT
300W max's out the real estate I have on the roof of my van and the 20A controller is physically as large as I can go inside the RV. I understand now..... You only have but so much room for the CC.... |
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