Many builders use VHB tape to mount panels. As my modules are large and cover full width of the roof, the wind force could be quite larger than for typical 100W panels mounted along, so I decided to hard mount mines.
I made two long steel rails and welded them to the custom made mounting plates that fit the very inconvenient sticking pins of PM (much easier would be to have the threaded holes). The panels are attached to the rails with a simple steel angles and stainless steel bolts. This allows panels to be easily raised on one side to do connection, roof cleaning, and if supported with a bar to have a tilt if needed for highest efficiency.
The cables go into the van through two holes drilled in the left roof light clear plastic cover.
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