Darryl has a good point. I've intentionally shaded my array (9 modules in
series) and have seen the VDC drop from 225vdc or so to around 170ish. Basic
string sizing with these modules and this inverter say 8 is the minimum number
of modules, but 8 would drop me out of MPPT during shade issues,
Thanks BIll, Jesse, David, Drake, and Allan,
It seems the Exeltech is a good choice for this application. Gris tied
with 120V supply to the PV array location.
With REgards,
Carl Adams
SunRock Solar
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Hey Wrencher's,
I am sure many of you saw the Ten K Solar booth at SPI.Does anyone have any
experience with the product line?Any thoughts on the design concept? I
have a customer who came across it on line and is asking for feedback.
Here is a link to their website:
I don't know if you want a 3D modeling program, but Sketchup is free and
incredibly powerful. There is a Pro version also available with more
advanced tools. It's about as simple as 3D could be. You could do 2D with
it also.
I just got back from Sketchup 3D Basecamp, and saw some amazing things
Reading their statements make me wonder -
A traditional solar system produces a substantial live current any time
that it receives sunlight—with DC voltages in the 300VDC-600VDC range—and
cannot be fused. Experts have said for years the only way to have a safe
system is for it to operate at low
DraftSight is a free AutoCAD clone (not just for Mac) that may be what
you're looking for.
On 2012/10/22 13:37, Jason Szumlanski wrote:
I don't know if you want a 3D modeling program, but Sketchup is free and
incredibly powerful. There is a Pro version also available with more
advanced tools.
Colleagues:
The statement below is substantially true and is the skeleton in the closet
for the PV industry. Smart combiners and automatic roof-top fault
disconnecting means will correct this problem.
William
At 08:22 AM 10/22/2012, you wrote:
Reading their statements make me wonder -
A
In the past, I've used 1/4 SS pop rivets. Two per foot which means you have to
drill new holes to either side of the existing hole in the foot. They have a
shear strength of about 2500 lbs per rivet. If this is a parallel to the roof
mount, they should work fine. I use Direct Power racks, so
Hello Wrenches,
We have commissioned a new SI system (240V single phase residential) and
want to ensure testing is adequate to ensure the system will perform as
desired.
The system consists of two SI5048s, 5kW PV array, SB5000US, battery bank,
transfer switch, backup generator, and supplemental
Hi al
I'd be fun to go into a very long discussion about the pros ( very few) vs cons
( many).
But to cut it short, pure BS
Jay
Peltz power
Sent from my iPad
On Oct 22, 2012, at 9:11 AM, Allen Frishman amfr...@aeonsolar.com wrote:
Hey Wrencher's,
I am sure many of you saw the Ten K
Inkscape is an open source software for print drawing.
Jesse
Sent from my iPhone
On Oct 22, 2012, at 1:23 PM, Dave Click davecl...@fsec.ucf.edu wrote:
DraftSight is a free AutoCAD clone (not just for Mac) that may be what you're
looking for.
On 2012/10/22 13:37, Jason Szumlanski wrote:
Carl,
If you envision a time when the gen could be on simultaneously with the SB,
ie grid down low SOC high load, test those conditions. Depending on the
generator brand and firmware, and also on the SI firmware, this test often
gave the generator fits.
-Phil Boutelle
On Monday, October 22,
Maybe we should reduce our household voltage to 70V also, it would be save
and you could fuse it...
On Mon, Oct 22, 2012 at 4:40 PM, jay peltz j...@asis.com wrote:
Hi al
I'd be fun to go into a very long discussion about the pros ( very few) vs
cons ( many).
But to cut it short, pure BS
They have interesting videos regarding their claims.
I have a colleague who is very enthusiastic about their product - has been
to their plant for a discussion about representing them.
Hope they do well for a US company.
-Glenn Burt
From: re-wrenches-boun...@lists.re-wrenches.org
Inkscape doesn't appear to work on Mac OS X. Any others?
Jon Hill
Sierra Solar Systems
On Oct 22, 2012, at 1:41 PM, Jesse Dahl dahlso...@gmail.com wrote:
Inkscape is an open source software for print drawing.
Jesse
Sent from my iPhone
On Oct 22, 2012, at 1:23 PM, Dave Click
Do we really buy that a reflector panel will produce more power than just
laying the solar pv at the right tilt?
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ac dc are very different animals.
todd
On Monday, October 22, 2012 2:03pm, Chris Mason
cometenergysyst...@gmail.com said:
Maybe we should reduce our household voltage to 70V also, it would be save and
you could fuse it...
On Mon, Oct 22, 2012 at 4:40 PM, jay peltz
Dear Friends: One of my customers has sustained damage to his PV array. I
am in need of two (2) replacement Mitsubishi Model #PV-MF-170EB3 modules.
If you can help me in this matter, please contact me off-list.
Sincerely,
Bill Haase
Haase Energy Systems, Inc.
Voice: (530) 527-8989
Fax:
I like OmniGraffle
http://www.omnigroup.com/products/omnigraffle/features/ Pro
for 2D schematics and layout drawings on a Mac. and SketchUp is great for
3D drawings and renderings
Eric Youngren
On Mon, Oct 22, 2012 at 3:15 PM, Jonathan Hill solar...@gmail.com wrote:
Inkscape doesn't appear to
tenKsolar has contacted me several times recently about their product. They
have a slightly interesting concept with the cross woven cell wiring but
otherwise I'm not sold. Not only am I not sold but I'd stay away with a 10'
pole. At least for me, the last thing I need is to be experimenting with
Chris:
The issue is not so much the voltage as the amperage. Utility power has
amperage capabilities that far exceed the rating of the usual over current
protection devices. In a fault, the current is temporarily very high,
opens the OCPD and the problem is resolved.
With PV, the power is
Hi There,
Since no-one has mentioned an 'off the shelf' product to achieve AC
diversion for a grid-tied system, I would like to look at developing one.
I am prepared to put my ideas into the ring.
This could be a collaborative effort, are there others who would like to
participate in
I haven't had a chance to work with TenK, but I'd love to see some monitoring
info from a system or two to verify their numbers.
Jesse
Sent from my iPhone
On Oct 22, 2012, at 5:49 PM, toddc...@finestplanet.com wrote:
ac dc are very different animals.
todd
On Monday,
I would talk to Thompson and Howe. (sp)
They make diversion controls for AC
direct hydros.
Usually this is based on voltage but I would
talk to them to see if current could be used
Instead.
Jay
Peltz power
On Oct 22, 2012, at 4:12 PM, Carl Emerson c...@solarking.net.nz wrote:
Hi There,
This is possible because they have cell-level MPPT. I'd guess that even
when the sun is perpendicular to the module you'd have a [tiny] bit of
extra current from diffuse light reflected onto the module, and you'd
see more substantial gains from reflection if the sun can see the
reflector and
This is something I have pondered a lot as the export tariff here is zero.
But there is a fundamental flaw in your logic. You are asking what device
would do this, that's an easy answer. Your real problem is what would you
use it for. What can this electricity be used for that is worth not getting
Hi Chris,
The most obvious use would be to heat a thermal store.
This is a resistive load and very easy to control.
I also have a client who would like to use it for irrigation loads.
So what is the device you have in mind?
Carl Emerson
Free Power Co.
Land line +64 9 473 4286
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