Any opinions/suggestions on my emergency power setup?
Could someone check my system to see if I got this right before hooking it all up?
Two 160W panels in series and two 165W panels in series, then parallel these two into a 40A MPPT controller. I will use a 15A dc circuit breaker in each series line before I parallel them.
160W panel specs: Vmpp = 18.5V, Impp = 8.65A This line will be 37V @ 8.65A
165W panel specs: Vmpp = 18.1V, Impp =9.12A This line will be 36.2V @ 9.12A
So in parallel, the voltage will be pulled down to 36.2 but the amps will be 17.77, for 643.2W, right?
Are the different specs between the 160W and 165W panels are small enough to not affect the MPPT finding the max power point?
Battery bank is two 12v VMaxTank 155AHr SLA batteries in series for a 24V Go Power 1500W Inverter, fused for 110 amps.
I'm open to suggestions on different wiring strings. The controller can take up to 150V Voc.
From using a calculator on another website this should keep my Fridge (1080 Whr/day) running 24/7 but only 1.5 days without sun. But I live in Nevada where cloudy days are almost newsworthy because they are so rare. I built this with the idea of an emergency power source for my fridge, (and for a fun experiment too).