help on fusing solar panels.

[Joe_]

I have 28 used sharp 235 volt panels.
The label on the panels reads thus:

Maximum power 235 watt
open circuit voltage 37V
short circuit current 8.6A
Rated voltage 30V
Rated current 7.84 A
Maximum system voltage 600 v
Maximum series fuse 15 amps


I am making 4 strings of 7 panels each then paralleling 2 strings of 7 panels to get a nominal output of 296 volts @17.2 amps.
I'm connecting everything with 30 amp pv wire.
I'm placing 4 inline 15 amp fuses, one in each string of 7 panels inline before where I connect them in parallel.
Does this sound like I am meeting code? Is there any convention on where the fuses should be placed in the series string? Or just where they are easily accessible?

Thanks.

 

[FilterGuy]

Fusing & Wire Sizing guidelines for solar panels

To get the paper, click on the orange'' button at the top of the screen. This resource is intended to help the user understand when they need to add Over Current Protection Devices (OCPDs - Fuses or Breakers) to the solar panel array and what...

diysolarforum.com

 

[Joe_]

Fusing & Wire Sizing guidelines for solar panels

To get the paper, click on the orange'' button at the top of the screen. This resource is intended to help the user understand when they need to add Over Current Protection Devices (OCPDs - Fuses or Breakers) to the solar panel array and what...

diysolarforum.com

Thank you that is exactly what I was hoping for. You saved me buying 4 expensive fuse holders with fuses.

 

[zanydroid]

Glad to see that. I would recommend also asking for extra eyes on your Voc, since that’s can be an insta kill on the SCC/MPPT in the winter.

 

[FilterGuy]

Glad to see that. I would recommend also asking for extra eyes on your Voc, since that’s can be an insta kill on the SCC/MPPT in the winter.

Adjusting Solar Panel Voc for temperature

When designing you solar panel system, it is important to adjust you solar panel Voc for temperature in order to ensure you do not over-voltage the PV inputs of your solar charge controller. This paper shows how to calculate the Temperature...

diysolarforum.com