I'm working with an Outback FlexMax 60 and trying to figure out how to connect multiple solar panel strings without taking up too much space. I have 15 panels in total, but I need to run 5 strings down to the inverter. Since I'm low on space, I'm considering combining 2 strings in parallel, then sending those to their own fuses before connecting them to a bus bar alongside a single string. I'm looking for confirmation on whether this setup would be safe and effective, especially concerning fusing and current limits.
2 Answers
It really depends on the specs of your panels and the FlexMax. You mentioned your panels have an ISC of 9 amps, if you're running two parallel strings with 18 amps each plus a single string at 9 amps, the total current might work. But, just remember that the FlexMax 60 can handle up to 48 amps. It’s crucial to check those numbers to ensure you don’t exceed them based on your wiring. Also, make sure you fuse properly to prevent any issues!
Yes, you can combine your panels like that, but you definitely need to fuse each string before they merge into one. This is for safety to prevent potential fire hazards. Using a rooftop combiner box could also make things simpler for you when managing the connections.
Exactly! Make sure your fuses are rated correctly to handle the maximum current from the strings.