Originally Posted by
Bill Kriegh
This looks like rigid conduit (GRC) and if so it is approved to be run in areas subject to damage, as is the case here. Looks to me like a good install for the most part.
The issue I have with it is that the conduit needs to be set so it doesn't sit in water and I can't tell from the picture if the conduit actually rests on the asphalt or if there is a small space under it.
As to running conduit across a roof, that's the last place I'd put any wiring if I had any choice in the matter. Too many issues.
A second look under a bit of magnification shows what appears to be single hole straps mounted on the top, so while the conduit is sitting on the strap and not the asphalt the strap is probably is on the asphat.