On 10/18/2010 9:53 PM, Matt Lafferty wrote:
Thanks for the info Dan and boB.
What production tests required to maintain listing? Do you happen to
know if there is a different regimen for micro vs string vs central
inverters?
You mean, a difference between the two when UL, ETL, CSA comes by
All,
With all due respect to the many people who have been involved in the review
and comment on this fire event over the past 1.5 years, there is more
misinformation and misinterpretations about this particular fire than any we
have had to date. It stems from a variety of information that w
Thanks for the info Dan and boB.
What production tests required to maintain listing? Do you happen to know if
there is a different regimen for micro vs string vs central inverters?
I'm working on developing a detailed commissioning procedure. Detailed yet
generic. There will be at least two ve
When I was an electrical apprentus back in the late 40's we called it 110/220
then in the fifties the voltage was reised to 115/230 and some time in the
1960 it was raised to 120 240
Darryl
--- On Mon, 10/18/10, Marco Mangelsdorf wrote:
From: Marco Mangelsdorf
Subject: [RE-wrenches] AC v
I just don't understand it.
Lots of people-from reporters to homeowners-consistently refer to the AC
voltage in their homes as "110/220."
Where does this come from?
If North American utilities were putting out power at that voltage range,
they would be in serious trouble.
Anyone abl
At SPI10 right now, getting bigger and worse every year. Same handful of
"Solar Celebs," same lack of insight, or a real market to apply it all to.
HEY SMA, FRONIUS, PVPOWERED, SOMEONE, MAKE A 3840W Inverter with CYCLING
MULTI STAGES, and MULTIPLE MPPT ALGO's! Minimum of 3 MPPTS, and have it be
At SPI10 right now, getting bigger and worse every year. Same handful of
"Solar Celebs," same lack of insight, or a real market to apply it all to.
HEY SMA, FRONIUS, PVPOWERED, SOMEONE, MAKE A 3840W Inverter with CYCLING
MULTI STAGES, and MULTIPLE MPPT ALGO's! Minimum of 3 MPPTS, and have it be
Hi Nick,
Technically, I sent my message a half an hour before the timestamp on yours.
I've had a few messages take quite some time to actually show up on the list
lately. Technically speaking, I think Michael has me on the "review before
publishing" list at the moment. Was it something I wrote? ;
Because the ground is not fuse protected. A short from the conduit to grounded
frames and then to the "grounded" conductor passes through the comon "gronded
conductor" bus to all of the modules in that string and all other strings that
share that "grounded conductor bus" which is probibly all
Hi Matt:
I saw you chimed in after I had sent my posting. It appears that the fire
was caused by just the one fault at the loose 2" EMT connector. If one of the
module strings was faulted, then the fuse protecting that one string should
open, and thus eliminating that string from the array
Thanks Matt! Just what I was looking for.
I have a friend who does PV commissioning for a major government agency and
he has caught numerous major installation errors that posed serious safety
concerns. It seems to me that a comprehesive 3rd party inspection of all
commercial/utility scale syste
Thanks Matt for the education on this.
So what type of Megger's are you or others using or recommending? We mainly
do smaller sized systems, not the size here that's for sure. Some small
commercial and residential.
Any preferences and why would be nice to know.
Thanks in advance!
Sincerely
Hi Daryl:
Unfortunately, the fault would not have been found with a megger because
the
fault occurred after thermal expansion had causes the conduit to separate. The
fault probably occurred shortly after the conduits separated. It appears that
what would have prevented the incident woul
Andrew,
The General/Prime Contractor on the job was SunPower vis a vis Powerlight.
As per standard operating procedures there, the actual installation was
subbed out. I don't recall which subs they used on this job, but there was
more than one. Per their normal routine, one sub installs the racki
Check the email CC list at the end of the official report, and I think
you'll find the party you are looking for.
DAN FINK
Buckville Energy Consulting
http://www.buckville.com/
William Miller wrote:
Andrew:
It may be in the report:
http://mpandc.com/practices/Safety/safety_data.html
Willi
I keep thinking had the installer routinely megohmed the ground and the "hot"
they would have known a ground fault existed, and would have repaired. The
event would have not happened. Then the short on the conduit would have triped
the ground fault detector, and lead to a repair. No fire.
Thanks William. That is the first place I looked but I didn't see it in
there. But I love all the resources on your website!
- Andrew
On Mon, Oct 18, 2010 at 12:47 PM, William Miller wrote:
> Andrew:
>
> It may be in the report:
> http://mpandc.com/practices/Safety/safety_data.html
>
> Wil
Andrew:
It may be in the report: http://mpandc.com/practices/Safety/safety_data.html
William
At 11:30 AM 10/18/2010, you wrote:
Does anyone know who installed the infamous Bakersfield Target job?
Andrew Truitt
NABCEP Certified PV Installer (ID# 032407-66)
Truitt Renewable Energy Consu
Does anyone know who installed the infamous Bakersfield Target job?
Andrew Truitt
NABCEP Certified PV Installer™ (ID# 032407-66)
Truitt Renewable Energy Consulting
(202) 486-7507
http://www.linkedin.com/pub/andrew-truitt/8/622/713
"Don't get me wrong: I love nuclear energy! It's just that I
Greetings All...looking for any feedback on the Zep Solar
racking.any one gotten their hands on one of these racking systems ye?
Care to share your experience?.what are your thoughts?..I am
thinking of possibly trying one of these systems...are the benefits
really as good as zep
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