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Post by jsb2000 on Jul 31, 2018 14:42:36 GMT
in parallel there would be little to no power loss. Since the original poster said: I added a 40 Amp Commander and two 100 Watt 12 volt slimline Monocrystalline panels, can I add two 160 Watt Polycristalline panels for a total of 520 Watts at 12 volts it follows that he was talking about adding the panels in parallel. Therefore, no need to confuse the issue with series calculations. |
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Post by Guest on Jul 31, 2018 17:39:59 GMT
thanks for you opinion jsb, is it OK if I disagree?
The OP should pay attention to the manual (in my opinion), which includes page 10 and 11, this shows what they suggest as best and how much overpower is allowed.
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Post by tattoo on Jul 31, 2018 18:14:11 GMT
thanks for you opinion jsb, is it OK if I disagree? The OP should pay attention to the manual (in my opinion), which includes page 10 and 11, this shows what they suggest as best and how much overpower is allowed.
I agree with jsb why confuse the OP..... |
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grumpy
Solar Newcomer
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Post by grumpy on Aug 1, 2018 1:19:03 GMT
I really don't understand why you can't mix and match panel wattage.... The CC doesn't know how many panels you have all it knows that it has power coming in to it.... Personally, I'm betting because purchasing two 160 Watt panels costs less than purchasing three 100 Watt panels. Savvy?  Related: Many years ago, I worked at a place with a service department and a sales department (I worked in the service side). Talk to someone in my department, and repairing your broken item would probably cost you a fraction of what a new one would cost. Talk to someone in the sales department, and your broken item "probably isn't worth it to repair, but hey, we've got new and improved shiny ones right over here!" Actually 3 100 watt panels are 336.00 and two 160 watt panels are 348.00 on Amazon Prime. |
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Post by tattoo on Aug 1, 2018 1:49:18 GMT
Actually 3 100 watt panels are 336.00 and two 160 watt panels are 348.00 on Amazon Prime. That's the same money pretty much..... And they would take up less room I'm guessing? |
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Post by Guest on Aug 1, 2018 12:16:04 GMT
Hello Board, for a total of 520 Watts at 12 volts the max rating of the commander 12 volts refers to battery, the input voltage is not limited to 12 v or nominal 12v panels. I likely would never use nominal 12v panel(s) with a mppt and a '12v' system. large panels and/or series connected small panels allows for higher input voltage, lower amps which yields less voltage drop in the 'nat as many' wires! It also allow for the controller to use peak power in very high panel temps. The above post is not limited to the OP, he/she/it can ignore it, connect his/her panels anyway they like, go 'overnighting' Grumpy! |
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Post by jsb2000 on Aug 1, 2018 21:15:30 GMT
Actually 3 100 watt panels are 336.00 and two 160 watt panels are 348.00 on Amazon Prime. Actually, 3 100 watt panels from Renogy are $411 and two 160 watt panels from Renogy are $348. |
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Post by tattoo on Aug 2, 2018 0:56:07 GMT
Actually 3 100 watt panels are 336.00 and two 160 watt panels are 348.00 on Amazon Prime. Actually, 3 100 watt panels from Renogy are $411 and two 160 watt panels from Renogy are $348. LOL So I guess surveys can be skewed any way the poll takers word the questions.... jbs that was great research to get the correct information.... |
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Post by g on Aug 2, 2018 14:34:44 GMT
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Post by g on Aug 2, 2018 14:40:35 GMT
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Post by tattoo on Aug 2, 2018 16:49:16 GMT
And that is a deal to boot.... |
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grumpy
Solar Newcomer
Posts: 40
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Post by grumpy on Aug 6, 2018 0:57:21 GMT
Actually, 3 100 watt panels from Renogy are $411 and two 160 watt panels from Renogy are $348. LOL So I guess surveys can be skewed any way the poll takers word the questions.... jbs that was great research to get the correct information.... Sorry to disagree but through Amazon the 100 watt are $111.90 each with free shipping or $377.90 for set of three? go figure. |
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