Brian, I think you serve on a CMP. (if not, anyone with knowledge on
the process would be helpful.) What is the process for receiving and
acknowledging input from non CMP members? Every time I submitted
comment, I received no response (as far as I can remember). Thank you, Chris
On 8/28/2021 11:09 AM, Brian Mehalic wrote:
Movement? Maybe, but as far as I can tell it’s just a forum to
complain as I see no activity that could actually impact the NEC® via
the clearly defined and delineated process. Also there are a few
flat-out false claims on the site, along with a call to action to fix
module level shutdown by…having module level shutdown in the junction
box? Most of the complaints seem to come down to connector
standardization (which obviously was not the issue with the APS
meltdown that started this thread).
Brian
On Aug 28, 2021, at 7:07 AM, drake.chamber...@redwoodalliance.org wrote:
There is a movement to do away with module level shutdown.
https://www.fixmlsd.com/?utm_campaign=solarbuilder_comment&utm_medium=email&utm_source=fixmlsd
<https://www.fixmlsd.com/?utm_campaign=solarbuilder_comment&utm_medium=email&utm_source=fixmlsd>
FixMLSD has convincing arguments that MLSD is less safe than safe
than an arc fault protective device with a standard string
configuration. Given the many problems with MLSD devices, it seems
likely that this is true.
Drake
Drake Chamberlin
Athens Electric LLC
Ohio Electrical Contractor’s License 44810
CO Master Electrician’s License 4526
NABCEP Certified PV Installation Professional
---
On 2021-08-27 09:02, Tump wrote:
I would once again say that; we as an industry can influence not
only the writing of the code but with what we are /buying/ OR /not
buying./
If the devices we are required to install to make things "more safe
& reliable", at the cost of our livelihoods & reputations, we all
need to make the folks that are building the RSD crap and those who
require installation of questionably safe & reliable crap aware of
these problems.
WE can thru either going to the code development meetings AND NOT
buying or installing this stuff. Not too easy when a huge amount of
solar is rooftop installs. As many of the installers in the NE know
its not a single level ranch were installing this stuff on, short
season & man lift required.
Tell your supplier why you are not buying that brand, let your
supplier & folks on the list what manufacture has good reliable
products AND tech support that we can understand, who we can get in
a timely fashion, and get the satisfaction of a prompt replacement.
IF we don't sell it they won't have a job or a market.
On Aug 26, 2021, at 2:09 PM, Jeremy Coxon
<jco...@sunwindpowerinc.com <mailto:jco...@sunwindpowerinc.com>> wrote:
Carl,
Did you get any kind of joy out of APSmart on that failure?
I will say that their tech support guy did at least try to be
helpful, but the language barrier was really really steep and their
distribution channels are less than ideal. Their response to a
request for compensation was that they would not be profitable if
they had to pay for truck rolls for such a low cost item. I really
don't think they GET IT. We've been in business for over 16yrs and
this one failure could easily have ended that run.
I cannot imagine we're alone here. I was told by AP that their
failure rate was 0.2%. Now, I come from a reliability engineering
background in petro chemical/ big pharma where a 0.2% failure rate
would be catastrophic. Can you imagine that 2 out of every 1000
pills made could cause death? We engineered secondary systems and
multiple quality checks to contain catastrophic consequences for
components that had know failure rates higher than acceptable
values. A simple solution to this fire initiation issue would be a
metal enclosure instead of plastic casing. That still doesn't
really solve the problem of extra connections though.
Best Regards,
Jeremy Coxon NABCEP # 091308-21
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