electro7
Senior Member
- Location
- Northern CA, US
- Occupation
- Electrician, Solar and Electrical Contractor
Hi,
I am looking at installing a Square D 3 pole non-fused 600VAC/600VDC safety switch at a ground mount array. I will be installing 3 strings of 12 modules with a Impp of 8.15A and Isc of 8.66A. I was wondering if a single 30amp safety switch would suffice to disconnect the positive of each string? Do I use the Impp or Isc rating of the module to calculate this? And do I need to multiply it by 1.25? Would I need to step up to a 60amp? Quite a difference in price.
Thanks
I am looking at installing a Square D 3 pole non-fused 600VAC/600VDC safety switch at a ground mount array. I will be installing 3 strings of 12 modules with a Impp of 8.15A and Isc of 8.66A. I was wondering if a single 30amp safety switch would suffice to disconnect the positive of each string? Do I use the Impp or Isc rating of the module to calculate this? And do I need to multiply it by 1.25? Would I need to step up to a 60amp? Quite a difference in price.
Thanks