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Post by JoeN on Jul 22, 2018 4:28:21 GMT
I currently have 4 100W panels, which run through a 30A PWM charge controller. I want to add 400 more watts to my system with 4 more panels. My question is do I need to buy a 60 amp MPPT and run all 8 panels to 1 controller? Or can I use 2 30A PWM controllers and run each set of 4 panels into a PWM and then both PWM wire to the batteries?
Thanks for any information!
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Post by tattoo on Jul 22, 2018 15:11:44 GMT
To me a 30a CC is a little small for 4 panels and is all but maxed out...
I have 8 panels now and I started with 4 like you.... I used a 40a CC and it worked good... When I went to 8 panels and a 60a CC now it works GREAT... It was well worth the cost and the 60a CC works so much better than the 40a did is unbelievable... |
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Post by Admin on Jul 23, 2018 1:20:29 GMT
Hello, the first question you need to answer is whether this is going to be a 12v or 24v battery system. If it's 24V, then it would be okay to use you 30A PWM but with the panels in parallel to each other, this is 8 panels in parallel with each other depending on the charge Controller.
Otherwise, 2 x 30A setups would be okay, however they would not necessarily display the same info on the battery because one controller would take charging priority.
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Post by tattoo on Jul 23, 2018 1:24:03 GMT
Hello, the first question you need to answer is whether this is going to be a 12v or 24v battery system. If it's 24V, then it would be okay to use you 30A PWM but with the panels in parallel to each other, this is 8 panels in parallel with each other depending on the charge Controller. Otherwise, 2 x 30A setups would be okay, however they would not necessarily display the same info on the battery because one controller would take charging priority. I for one am really glad to see you make a post... |
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