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Post by crystalcarver on Sept 24, 2016 22:58:20 GMT -8
1) Is this 40 amp controller suitable for 2 * 320 W panels charging 2 * 100 AH AGM deep cycle batteries?
2) what pure sinewave inverter would you recommend for this setup?
Thanks
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Post by spiderbob on Sept 25, 2016 21:45:45 GMT -8
I'll go out on a limb and say sure. I have 600w on a 40MPPT and it works fine. Worse case, it will just shed off 40w. On my second system I have 600w on a 30PWM and it handles it just fine. How are you wiring the panels, series or parallel
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Post by rabird on Sept 26, 2016 15:48:59 GMT -8
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Post by spiderbob on Sept 27, 2016 11:14:48 GMT -8
1) Is this 40 amp controller suitable for 2 * 320 W panels charging 2 * 100 AH AGM deep cycle batteries? 2) what pure sinewave inverter would you recommend for this setup? Thanks Keep in mind that by using two 320w panels, higher voltage solar panels can be wired with thinner gauge wire, watts = current x voltage, so for the same number of watts in a panel, a higher voltage panel will produce a smaller amount of current, this is a good thing. Example I have four 120 w 12v panels wired in parallel that would produce 28a at 12v, I can use two 240w 24v panels wired in parallel that produce 14a at 24v, and the net effect on the batteries will be the same, but the bigger panels can be wired with smaller wire, which in turn, less heat loss.
As far as #2 goes, the most you can afford.
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