[RE-wrenches] J-Box Damage

[Corey Shalanski]

Wrenches,

I have a bit of a CSI-challenge for the group. Please see attached photo.

These are the details as provided to me:
The junction box shown in the photo is from a set of 18 modules that were
installed (for about 3-4 years) and then removed for re-roofing purposes.
Our company did not install the original array; we were called in for the
reinstallation. As soon as our technicians removed the modules from their
storage container and exposed them to sunlight, they started smelling
burning electronics. They opened at least one other junction box and found
similarly charred components. They measured zero voltage on these and at
least "a half dozen more". Some of the modules from this set had no intact
MC4 connectors; apparently they had been cut off to make removing the
modules easier (?!)

The project integrator is seeking a *plausible* explanation so that he can
decide how to move forward - essentially, what could have caused this?

Thank you for any ideas the group can offer :)

--
Corey Shalanski
Joule Energy
New Orleans, LA
ᐧ
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