[RE-wrenches] MLSD module level shutdown

[frenergy]

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, 
> sky at ecologicalsystems.biz <sky at ecologicalsystems.biz> 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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