[RE-wrenches] ground-mounted systems, performance

[Alex Cozine]

The only problem I've seen was due to a sloped hillside and a riding
lawnmower projectile.  These modules are what refer to as the "Cadillac" of
modules.  If you have a chance to use them, you should.


On Sun, Aug 10, 2014 at 10:54 AM, Rebecca Lundberg <
rebecca.lundberg at powerfullygreen.com> wrote:

> Hi Jesse,
>
> I'm curious about what you are seeing. We've seen better performance than
> that on arrays with those modules, but don't have module-level monitoring
> available on any of our systems. Does it look like there is a bipass diode
> failure with the shattered modules (probably covered under warranty), or
> was there something like lightning near your ground-mounted system? We have
> a customer whose home received a direct lightning strike recently (no fire
> or human injury!), and 100% of the PV system needs to be replaced (except
> flashing/racking), unfortunately.
>
> I thought the delamination issues were only (or mostly) generation 2
> modules and only in our state, but wonder if any installers in other places
> (WA?) are seeing this too?
>
> Keep Shining!
> Rebecca Lundberg
> Powerfully Green
>
> Message: 4
>> Date: Fri, 8 Aug 2014 17:30:02 -0500
>> From: Solar <dahlsolar at gmail.com>
>> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
>> Subject: Re: [RE-wrenches] ground mounted systems
>> Message-ID: <69F1D6AB-A424-4BC9-A1DF-9BEF5D3C48F4 at gmail.com>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> William Miller has some nice ideas on his website regarding protecting
>> circuits. I've used his ideas on one project and the inspector liked it.
>>
>> Silicon Energy makes a module with raceways for output circuits. Their
>> module is expensive comparatively speaking and I've never seen one of their
>> 190W modules produce over 155W (using Tigos to monitor) they've also had
>> some delimitation problems with modules made here in MN and one of my
>> Silicon Energy systems has two modules with the glass shattered on it that
>> I discovered today.
>>
>> Jesse Dahl
>>
>
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-- 
Alex Cozine
NABCEP Certified Solar PV Installer™
Journeyman Electrician

Brothers Electric Solar
brotherselectricsolar.com
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