Setting up my solar system
I'm in the planning stages of adding solar to my travel trailer. I currently have a battery bank of two 6V flooded lead acid GC batteries in series that is 215 Ah 12 volts. I am planning on adding ...
Forum Discussion
As posted fuses or CBs on 3 or more panels in parallel. The most common combiner box is on the roof with heaver wire to the controller. Otherwise a lot more wire to the combiner near the controller.
Morningstar like many controllers says: both off, battery on, panel on OR both on, panel off, battery off. I have a switch for my panels and a CB for the battery. 800W is fine, the manual says if you over panel the controller it will cut off at 60A.
I'll predict that you will not ever get 60A. On a crystal clear Phoenix summer day at 1:00 I added heavy loads which lowered the battery voltage to under 12.0V and got 53A with 750W of solar. Clearly with 14.0V+ there will be less amps.
I have 3x 250W in serial. Very efficient wiring. Array to batter 1.6% voltage drop. I have 62' of 10ga UV wire from the panels to the controller which includes the 3' panel pigtails. 0.4V drop which is virtually nothing for the 92 Vmp.
Morningstar like many controllers says: both off, battery on, panel on OR both on, panel off, battery off. I have a switch for my panels and a CB for the battery. 800W is fine, the manual says if you over panel the controller it will cut off at 60A.
I'll predict that you will not ever get 60A. On a crystal clear Phoenix summer day at 1:00 I added heavy loads which lowered the battery voltage to under 12.0V and got 53A with 750W of solar. Clearly with 14.0V+ there will be less amps.
I have 3x 250W in serial. Very efficient wiring. Array to batter 1.6% voltage drop. I have 62' of 10ga UV wire from the panels to the controller which includes the 3' panel pigtails. 0.4V drop which is virtually nothing for the 92 Vmp.
