Andrew,
If these are the only two examples of justification of MLSD
and not knowing the details of the examples you've cited, I suggest
there is a more effective, equal in labor to apply, less expensive,
durable solution. For the squirrel problem, an alternate solution is
one of the available edge of array screen products. Not only does it
stop the squirrels but it works for mice, leaves, pine needles, etc.
Can you enlighten us about the cause of the resi fires that
were caused from the lack of MLSD's? Poor wire management? And was the
hole in the metal roof caused by the squirrel having lunch on the wiring?
I feel it worth diving into this deeper for a variety of
reasons.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net
On 1/29/2021 11:56 AM, Solar Energy Solutions wrote:
Dear All,
I have been an outspoken critic of module level shutdown for all the
reasons folks do. However, I have come around. We have witnessed too
many systems where rooftop wiring has been chewed up by critters...
mostly squirrels. We have seen everything from residential fires to
holes in metal roofs caused by a DC arc. I never thought I would see
the day when I would not only be thinking MLSD is a good idea but
advocating for it.
Smiles,
**Andrew Koyaanisqatsi**
*President*
**Solar Energy Solutions, Inc.
/The BRIGHT CHOICE/
**
*Since 1987,**helping you and your Portland neighbors
move**towards an environmentally sustainable future.*
**503-238-4502
www.SolarEnergyOregon.com <http://www.solarenergyoregon.com/> **
On Friday, January 29, 2021, 11:25:28 AM PST,
[email protected] <[email protected]> wrote:
So far the module level shutdown requirements have been a real blow to
our industry. The reliability and cost from a maintenance and
installation standpoint has been very hit or miss so far. It feels
like this requirement was rolled out far too quickly without enough
forethought to its impact on the industry. We are constantly going out
and fixing problems with mlsd installed by other contractors.
Thankfully the problems have nothing to do with the quality of the
installations. The problems are almost all due to premature failure of
the products or some inherent defect in them. This is a serious issue
costing the industry time and resources and making our installers less
safe. It just doesn’t really accomplish the intended goal of the
requirement.
I’m curious how other wrenches are dealing with this issue. I recently
became aware of fixMLSD.com which appears to be focused on bringing a
more sensible approach to this requirement.
Your thoughts are appreciated,
Sky Sims
Https://EcologicalSystems.biz
“Just An Old Wrench”
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