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Anyone have a solar Walmart fire?

Inquiring minds await the findings as to origin of these. Could it be radiant heating from the panels melting the roofing?
How much heat can current flow in the wires generate?
 
Obviously the fires were caused by escaped electricity. It's a wonder that PV isn't bursting into flames daily. No electricians are present during construction. The only saving grace is the relative simplicity of solar arrays. Any shoe salesman with the stomach for walking roofs is an industry standard PV mechanic.

On large projects there isn't enough attention paid to expansion and contraction due to sunlight. Conduits come apart....wires are chaffed....electrons dance to freedom taking molten metal along for the ride. Another common pitfall is bare copper against aluminum module frames. It doesn't take years to create new circuits.
 
Viewed as a "put folks to work" program. Jobs for those lacking skills?
City inspectors allowed to do roof climbs? Who provides their safety harnesses and tie-offs?
 
Green flames maybe...

images


After-all, the presence of copper will produce green flames. https://www.quora.com/What-causes-a-green-flame
 
Maybe Walmart should have install S:(lyndra solar panels instead?

Didn't some politician just by a mansion in the Hampton's?
 
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