Solar Panel Size To Battery Bank Size
When you pro's talk, having solar panels sized to battery amp size, are you referring to total battery capacity or the 50% useable battery capacity? I am working on my Solar system, I have a total hou...
Forum Discussion
CT_WANDERER
720 W at 12 V is 60 amps.
If you go to higher voltages in run from panels and battery suite, you can use smaller wiring and smaller controller
Case in point, we have 90 V from panels (we did get to 1400 W to controller today when we ran fridge and hot water just for the heck of it) and 48 nominal battery bank. This would be 108 amps at 12 V but only 16 amps at 90 V. This goes to battery suite at 48 V nominal which is 29 amps. Our TriStar MPPT-45 controller handles things nicely.
We would have to go to two MPPT-60s to do this at 12 V. The 48 V (508 W) Mean Well power supply cuts the voltage to 12 V for the 12 V DC circuits and the inverter handles the 120 V AC circuit. 12 V to 12 V is a lot simpler process.
Reed and Elaine
720 W at 12 V is 60 amps.
If you go to higher voltages in run from panels and battery suite, you can use smaller wiring and smaller controller
Case in point, we have 90 V from panels (we did get to 1400 W to controller today when we ran fridge and hot water just for the heck of it) and 48 nominal battery bank. This would be 108 amps at 12 V but only 16 amps at 90 V. This goes to battery suite at 48 V nominal which is 29 amps. Our TriStar MPPT-45 controller handles things nicely.
We would have to go to two MPPT-60s to do this at 12 V. The 48 V (508 W) Mean Well power supply cuts the voltage to 12 V for the 12 V DC circuits and the inverter handles the 120 V AC circuit. 12 V to 12 V is a lot simpler process.
Reed and Elaine
