Solar array inline fuses sizing?

Can someone please check to see if I got this right?

I have 6 - 100watt solar panels
Short circuit current of panel is 5.86A
Max series fuse rating is 15A

I am wiring these 6 panels in a 2S3P configuration.

My calculations are showing 17.58A is the short circuit current for this array setup. Correct?

So, I would need to fuse each of the 3 sets of panels with a 15A inline fuse?

Thanks. I'm trying to learn.

I would skip it. If one of the parallel strings fails the remaining strings only have 11.72 amps to push into the failed string. The 15a fuse will never open. Also the voltage is very low to cause any real trouble.

time2roll said:

I would skip it. If one of the parallel strings fails the remaining strings only have 11.72 amps to push into the failed string. The 15a fuse will never open. Also the voltage is very low to cause any real trouble.

Click to expand...

Thanks. Did not think of the total left in the working sets. Also the Voc of each panel is 22.3v so we are only talking 44.6v coming out of the array.

So if I added one more series set, then the fusing would be needed. I think.