Hi Mick, Take a look at NEC250.32 TerryQuoting Mick Abraham
m...@abrahamsolar.com:
Greetings, Wrenches~ I'm advising some clients on an existing off grid power
system. They have inverters and multiple AC sub-panels which feed several
different structures. The various structures have their own
There is an issue with Sharp modules using Weeb clips also. They are
not specified for grounding in their manuals and UL has not tested
Sharp modules with the clips. For now, they are not acceptable. I
don't know how many brands of modules are effected by this ruling.
Drake
At 04:48 PM
Bill (and Chris and Tim),
Be a little bit more careful in your choice of subjects...?
I am shocked, shocked that you would use that tone with me.
If you would re-read my post, I talked about three things:
(1) SunPower's no longer supporting the WEEB clip technology and regressing
to the
Ray,
Your picture is clearly one of an aluminum lug with a steel screw. I would
agree that this lug is unacceptable, but this is NOT the lug which is commonly
used and has been used for many years. While you apparently are infatuated by
the WEEB device, not all of us are. Could you please do us
Bill:
You will need to install MPPT trackers from TIGO and SOLAR MAGIC on all of
your modules, and not just the string in question... as far as I have been
told. I have asked both outfits the same question - and was interested in
SunMizer for this very reason.
But SunMizer seems to be
I didn't do the original install, and I couldn't ID the lug because of the
corrosion.
I believe everyone is correct that this isn't the DBT rated lug, though.
Another reason to use the WEEB: a crew can't accidentally install the wrong
(but almost identical, when new) lug.
I'm sure the non-DBT
Perhaps in the future, we can go with a composite frame and remove the
grounding
challenge altogether?
Carbon fiber would be spectacular, minus the cost.
From: R Ray Walters r...@solarray.com
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Sent: Mon,
Hi Bill;
690.43 seems to practically spell out acceptance of the WEEB.
and then it cross references article 250.136A.
250.136 EQUIPMENT CONSIDERED GROUNDED
(A)Electrical equipment secured to and in electrical contact with a metal rack
or structure provided for its support
(Is it
One point of clarification regarding SunPower Corp. and WEEBs having just
had communication with them today on this subject.
SunPower has yet to officially approve/sign off on the use of WEEBs with
their metal-framed modules.
They have been exploring the issue but have yet to give their seal of
mailto:re-wrenches@lists.re-wrenches.org
Hi Matt:
Thanks for your opinions. Just a couple comments.
1. Azimuths. We fixed this issue some time ago.
2. Too many steps.
Except for large rooftop installations, most sites can really be
analyzed with a good eye and a compass. The purpose of a
Bill,
You and John Wiles have shown leadership on the module grounding issue. It
would
be good to know who at UL is preventing a universal solution so that this issue
can be resolved at the highest level once and for all. What do you suggest for
the course of action?
Joel Davidson
Hopefully any crew installing PV, and familiar with this debate (which they
should be) can easily distinguish between the GBL-4 and the GBL-4DBT. The
weight difference is quite noticeable. If it feels light for its size, it's
aluminum, dont use it!!! If it has some distinct weight to it,
Owing to a strong lack of political correctness, I would point out the
obvious; Underwriters Labs decisions are strongly influenced by industries
that stand to financially benefit from UL rule making. Those component
manufacturers pay a lot to have their products listed. Who among us has not
2 points:
1) For the sake of clarity: there are WEEB
LUGShttp://www.we-llc.com/Datasheets/204-0404-03.pdfand WEEB
CLIPS http://www.we-llc.com/Datasheets/204-0404-07.pdf. WEEB Lugs are
comprised of very robust tin-plated copper lugs, stainless steel hardware,
and the actual WEEB, which is
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