We had a new competitor take a video of one of our installs (with owner's
permission) and post it on the front of their web page. I believe it's still
there almost two years later.
It's a shady thing to do but I don't think there was anything we could legally
do to stop them.
From: re-wrenche
We had this happen a few years ago. The installer in question was NABCEP
certified. The use of other installers systems as promotional material, as
well as other "less than ethical" practices on the website were in breach of
the NABCEP code of ethics. So we notified NABCEP and they approached the
i
690.9(D) is not applicable to the original discussion because we were
talking about an Inverter output circuit, not a PV Source or Output circuit..
690.34 may apply if you call a SolaDeck with breakers a junction box, but I
can see that being a stretch in the mind of many.
My and Ray's question a
Setting aside code issues for a moment, I wouldn't hesitate to put an OCPD
under a module if strategically located such that only one module needs to
be removed and there is adequate working space (i.e. the last module in a
row). How often are OCPD service issues encountered, especially AC inverter
I think 240.24(A)(4) allows the installation of the inverter OCPDs in
the SolaDeck hidden under a module.
** *240.24 Location in or on Premises.*
** National Electrical Code 2008 Edition *(A) Accessibility.*
Overcurrent devices shall be readily accessible and shall be installed
so that the cen
Dave
I agree, in the case of microinverters, you already have a main PV System
disconnect at the Load Panel to shut down the system that is readily
accesible. I would consider the disconnect on the roof as a supplemental
disconnect for the purposes of maintenance by authorized personal that only
This may apply to the other string on using photos, etc. but I hereby
grant full rights to all registered users of the wrenches list to use
any of my posted photos for educational purposes.
I was trying to figure out the DC wiring myself. Its possible there is
a homemade bussbar connected betw
Not just microinverters. This could apply to multiple string inverters with
combined output in a suitable panel under a module. That scenario is
probably rare, but I have seen it on a commercial flat/low-pitched roof
installation.
Jason Szumlanski
On Tue, Apr 29, 2014 at 12:43 PM, Bill Hoffer
Any idea what the two silver cylinders in the upper left of the photo are
(sitting on top of the battery box)?
> Hi Bill;
>
> The 2014 NEC (coupled with rampant misinterpretation) is accelerating
> an ever widening gap between those that have "code" and those that can't
> afford it. On one side
I'm glad everyone is having so much fun with that pic, as scary as it
was. We could make a contest out of it: "How many code violations can
you find in this picture?"
and let Bill judge the answers. Believe me, there are more pictures,
where that came from.
Sorry, I do not know what those cyli
Hey Wrenchers,
I am looking for suggestions for building a shade structure on a flat roof for
inverters and load center.There is no bulk heads on this flat roof and it
is a zero lot building so there is no exterior wall available to hang the
inverters. No space inside the building either s
William,
Please feel free to add this link to your site. The Oregon Code is precedent
setting and should be copied and improved upon regarding rooftop access. When
I say improved, I mean that 60% or more of an entire roof be available to
firefighter access leaving 40% for solar. This should
Al,
Not sure what you mean by "zero lot building"?
Can you design/construct a ballasted "wall/structure" at the back of the
array that could accommodate the inverters and load center on its
'out-of-the-sun' side. It could be a covered/vented cabinet.
Are micro-inverters an option? That would ma
Dan,
Are they assembling or actually making cells as well?
jay
peltz power
On Apr 28, 2014, at 8:52 PM, Exeltech wrote:
> There's also 1Soltech Dallas, Texas.
>
> Made in the USA. (Confirmed. I visited their plant on a field trip with a
> solar energy club not long ago and saw their producti
Follow up to Bill's point.
For Micros I've installed a disconnect on the roof, but never a breaker or fuse
Why install a breaker?
jay
peltz power
On Apr 29, 2014, at 9:43 AM, Bill Hoffer wrote:
> Dave
>
> I agree, in the case of microinverters, you already have a main PV System
> disconnect a
Hello Jay,
They're assembling, using cells from domestic and international sources. Their
other components are domestic to the maximum extent possible. Problem is ..
like the domestic PV firms mentioned in another post, domestic component
manufacturers are also going out of business, forcing
I can show how we did the same thing on a flat roof using unistrut and
angle iron for 3 x SMA 20kw Tripowers and a 400A panel. All we had was a
$100 MIG welder. We put some roof steel sheet above the inverters.
I will have to look for photos.
Chris Mason
Comet Systems
Anguilla (264) 235-5670
St. K
Hello Wrenches,
I'm working on a design and could use some other points of view. I have a
potential client that would like some backup power. His house is bored
into a sandstone cliff and would be exceedingly costly to get any conduit
in and out of the structure, so I'm trying to avoid it. It's
Hi All;
In order to avoid any of my work showing up in someone's slideshow of
horrors, I'm trying to find the correct way to wire 3 Sunny Islands with
Cobra X flex cable.
While it doesn't actually mention it in the SMA manual, a call to SMA
tech support confirmed my suspicions: the DC lugs in
Ray:
Darn good question, especially since I will be doing the exact same thing,
*tomorrow*.
I have never been clear on the real problem. Fine stranded cables overheat in
the wrong lugs? Is this true for mechanical or compression?
Aside from code compliance, what is the best common sense appro
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