[RE-wrenches] J-Box Damage

[Jerry Shafer]

I have had j box failures that looked like this causex by poor connections
resulting in resistance which caused heat
Jerry
On Nov 4, 2014 11:39 AM, "Corey Shalanski" <cshalanski at joule-energy.com>
wrote:

> 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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