wiseacre
Solar Addict
Solar panels:
Rated Power: 195W
Open Circuit Voltage (Voc): 21.6V
Short Circuit Current (Isc): 10.83A
Working Current (Iop): 9.02A
Output Tolerance: ±3%
I have 6 (plan for more) and will wire 3 pairs in series - 1+1, 1+1, 1+1 - for a 24 v system
I would run them to a combiner box (over sized for upgrades/additional panels)
This is where I get confused.
I need to run wire from the panels about 100 feet to the house.
What would the output of the combiner box be with my 3 strings?
What would the wire size need to be from the combiner box.
Now I probably could make it simple and run wires from each string and put the combiner box at the house. Lots and lots of wire (WindyNation sells 10 AWG panel wire up to 150 feet) so this seems like a possible but expensive option.
What gets me is when I calculate wire size from the combiner box (100 feet away) I get a size too large to fit any of the components. Either I'm right or more likely I'm using the wrong figures. That's why I thought of using long wires from the panels to the house but even then, just because someone makes such long cables doesn't mean the voltage drop is acceptable. I just don't know.
Rated Power: 195W
Open Circuit Voltage (Voc): 21.6V
Short Circuit Current (Isc): 10.83A
Working Current (Iop): 9.02A
Output Tolerance: ±3%
I have 6 (plan for more) and will wire 3 pairs in series - 1+1, 1+1, 1+1 - for a 24 v system
I would run them to a combiner box (over sized for upgrades/additional panels)
This is where I get confused.
I need to run wire from the panels about 100 feet to the house.
What would the output of the combiner box be with my 3 strings?
What would the wire size need to be from the combiner box.
Now I probably could make it simple and run wires from each string and put the combiner box at the house. Lots and lots of wire (WindyNation sells 10 AWG panel wire up to 150 feet) so this seems like a possible but expensive option.
What gets me is when I calculate wire size from the combiner box (100 feet away) I get a size too large to fit any of the components. Either I'm right or more likely I'm using the wrong figures. That's why I thought of using long wires from the panels to the house but even then, just because someone makes such long cables doesn't mean the voltage drop is acceptable. I just don't know.