Carl,
Everything you said is true, but it does not answer the original question fully.
It is more about the variation in electrical output than long term degradation.
If I had to summarize it a different way it would be this.
Flash testing a CIGS module to STC will give you certain voltages and IS
It is confusing that they refer to this as a "light soaking" effect. When we
worked on this thin film article in SolarPro magazine a couple years ago, a
researcher at NREL referred to this specific phenomenon as a "dark soaking"
effect (see discussion under "Performance Transients"):
http://sol
Friends:
I have a legacy client with a SB2500 remote from a residence. We are using
a Control Light but it is becoming more and more unreliable. What
experience do any of you have with PLC communications with the Sunny Boy
using more modern equipment?
Thanks in advance.
William Miller
M
Has anyone in the snow belt areas have any luck with convincing their local
building inspectors that the snow melts or slides from panels, much like a
metal roof only better. Thus your snow load would be reduced to zero where the
panels have been installed.
Gary
__
Most structural engineers I've seen take a reduction for slippery surface but I
think you'd be stretching things to say adding PV panels reduces the load to
zero. I have a 45 degree pitch roof and I get snow build up some times
especially if we get freezing rain before the snow.
Also if you ha
Hello Wrenches
I'm having an issue with a pair of Outback inverters producing
electromagnetic interference with the low band radios at a site we
installed recently. Other than a Faraday cage does anyone have any
methods of reducing the EMI from Outback inverters? I've been looking in
to ferrit
Hi Marco. Try this link:
http://1.usa.gov/W8m1bK
Marco Mangelsdorf wrote at 07:15 PM 2/18/2013:
I couldnt get that link to
work, Doug.
Thanks.
From: re-wrenches-boun...@lists.re-wrenches.org
[
mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of
Doug Wells
Sent: Monday, February
Look into Amodon ferrite cores.
On 2/19/2013 1:30 PM, Vince McClellan wrote:
Hello Wrenches
I'm having an issue with a pair of Outback inverters producing
electromagnetic interference with the low band radios at a site we
installed recently. Other than a Faraday cage does anyone have any
met
I would certainly agree with Will here. You can't make that argument as stated,
it's wrong. Please don't try to make it to your AHJ, you take the chance of
f-ing it up for everyone around there. I think the best argument you can try
is: aside from the usual 3-4lbs/sq/ft that the array itself ad
about 10 years ago - after a particularly heavy duty (more than usual) mount
shasta snow storm, the county raised the snow load specifications here from
40#/sq ft to 60#/sq ft... which made all existing roofs substandard, so while
they are grandfathered in, adding 2 to 3 #/sq ft for solar is
Friends:
SMA is no longer offering refurbished SB2500 inverters. If you find a dead
one, the only option is to acquire a refurbished SB5000US for
$700.00. This is touted as an "upgrade" but I don't see it that
way. Rarely will you want to add more solar. Usually the system was
originally d
Wrenches,
I am designing a system with a sizable diversion load and am looking for the
smallest water tank I can get with four ports for elements. I will be supplying
my own elements and need four 1" bungs. I am definitely trying to avoid a
large, expensive solar thermal tank, but that is all
Hello Wrenches,
Has anyone had recent experience with the Lorentz PS (PV) line of pumps,
both centrifugal and helical? I searched the archives and there was some
feedback on Lorentz pumps two years ago. Just wondering if anyone had anything
more recent.
Thanks,
Tom
Tom DeBates
Habi-Tek
Ge
Get a heat manifold with {4} 1" ports, & if it's not deep enough for the
elements plumb it yourself or have your favorite plumber or welder build
one. Suggest reverse return flow path. Foam the hell out of it after
installing & pressure testing.
Contact me off list and I could draw a quick prin
Hi Nathan,
Greer Tank in Fairbanks could weld in additional bungs into whatever
tank you want. They have certified pressure vessel welders. You are
hardly in prime tank season, so I would imagine this would be relatively
cheap.
Or you could look at McMaster-Carr's tanks on page 956. Go to
m
Tom,
Rant:
I would caution you to be very careful working with Lorentz pumps.
About 16 months ago we got a service request from a longtime
customer for whom we had installed an ETA (Lorentz) PV-direct
submersible in late 2005. The pump had worked well for n
Ditto on my experience with Lorentz. I have pulled more than I can count and
recycled.
I have had a great experience with BISON SOLAR helical pumps we have several
in and no issues. Typ designed for stock tanks they can be field configured
for domestic pumping AC & DC.
Huge range of options a
17 matches
Mail list logo
