How about Lightning Damage? [RE-wrenches]

[Jerry Caldwell]

Has anyone ever seen a module pigtail of USE-2 with
the insulation totally cooked off the wire for several
inches?  Is this likely to be lightning damage?

Also, what brands & models of lightning arrestors
would wrenches recommend, or not recommend for use
with Sunny Boy or other high voltage systems?

Jerry Caldwell

--- Doug Pratt <dpratt at pacific.net> wrote:
> -----Original Message-----
> From: Joel Davidson
> [mailto:joeldavidson at earthlink.net]
> <snip>
> How about lightning damage to solar modules (not
> controllers, inverters
> or batteries)? I have never had a solar module
> damaged by lightning.
> <snip>
> 
> I haven't seen damage to the module, but I've seen
> the blocking diodes
> in the J-boxes blown to cosmic dust a number of
> times. Several of the
> used Siemens 75w modules we brought back from Belize
> last year had
> vaporized diodes, which means...no output power. If
> you open the j-box
> on a "dead" module and find only the diode wires
> hanging in space with
> nothing connecting them anymore, that's lightning!
> 
> -Doug Pratt
> 
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