[scottz]

Anybody have photos of this unistrut mounting system?

I'll be mounting 8 215W panels using most of my roof area; that's a lot of strut. Probably 10' for every panel, total of 80'.

As a side note; when I mounted my existing panels I never looked for studs. I just lagged them into the roof. No problems in the last 5 years. However the unistrut idea is intriguing.

This will be my panel layout. Two strings, four panels each, running at 48V. I might change the orientation of panel 8 so panels 5-8 are in a straight line; just have to figure out if there will be enough room to step around them.