Hi All -
Refer to NEC 690.35 Ungrounded Photovoltaic Power Systems. 690.35(D)
specifies the types of PV source conductors required. For standard 600 V
ungrounded systems it is typical to use PV wire (which may or may not be
double insulated) under the arrays where installed exposed and then
tran
Wrenches,
An unknown quantity of Generac EcoGens went out of the factory with
incorrectly connected oil lines. We are working with Generac now,
concerning a new unit that destroyed itself on its first run.
After we hooked the machine up and left, the customer manually
started the machine the
Greetings Esteemed Wrenches,
We are building a 35.75kW project with (6) Power One 6000's. The service is a
240 delta. The utility is requiring (late in the game) that if one leg of the
service is lost, all inverters must shut down. Of course, we have two inverters
that do not shut down in that c
Phase loss relay that opens contactor(s) serving the inverters. That will
shut everything down if the utility drops a phase.
-James Jefferson Jarvis
APRS World, LLC
http://www.aprsworld.com
+1-507-454-2727
(this message was sent from my cell phone ... my apologies for any spelling
errors)
On Sep
Eaton just announced some safety switches with shunt trip that may work
for you- Google: Eaton TD008003EN to get the datasheet.
TD008003EN
On 2013/9/24 11:12, Karl Jaeger wrote:
Greetings Esteemed Wrenches,
We are building a 35.75kW project with (6) Power One 6000's. The
service is a 240 del
Hi Folks,
Checking to see if anyone has had experience with the new Magnum "hybrid"
inverters? I've got a client with too small a generator that this could be a
solution for.
http://www.magnumenergy.com/Products/MSH-Mseries.htm
Kevin Pegg
EA Energy Alternatives Ltd.
37471 Hwy 16 E
Telkwa, B
We were not notified about that issue.
At 12:23 PM 9/24/2013, you wrote:
Drake:
Generac released a Service Bulletin # SIB13-09-EcoGen in July about
this issue.
Regards,
Gary Willett
Icarus Solar
On 9/24/13 9:34 AM, Drake wrote:
Wrenches,
An unknown quantity of Generac EcoGens went out
Real simple. A contactor with a phase loss detector gadget.
Chris Mason
Comet Systems
Anguilla (264) 235-5670
St. Kitts (869) 662-5670
skype netconcepts
NABCEP Certified Solar PV Installer™
Renewable Energy Systems professional
Generac Generators Factory technician
On Sep 24, 2013 11:12 AM, "Kar
I have felt for some time that inverters should have a logic control to
turn them off. "Short contact A to ground to disable inverter" type of
interface. If we had that, we could implement generator protection very
simply.
For your application, I see these being used in 3 phase pump control
system
Re: XW 600 VDC Controller:
Friends,
Sure appreciate the feedback over the last 2 days! I've been away from
the computer but able to read on my phone.
I wound up ordering a Classic 250 which will allow for running strings
of 5 LG250'S and still keep the VOC within spec of the controller when
Hello Wrenches:
Ok, here's one for you. We have a customer whose utility provider is L.A.
Dept. of Water & Power; he's getting ready to install his battery-based
grid-tie system with a Radian inverter, load center, HUB4, eight - 250W
modulesetc. But the inspector is calling foul, saying h
Chris,
Is that the "inspector" saying that, or the LADWP rep?
Brian Teitelbaum
AEE Solar
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Chris Daum
Sent: Tuesday, September 24, 2013 12:41 PM
To: 'RE-wrenches'
Subject: [RE-wrenches]
Brian:
The LADWP engineer (Tony Ramirez) advised the inspector (Brenden Owens) who
told my customer (who, ironically, is retired from working at LADWP) that he
couldn't have a straight battery-based system. And has to interface his
system with a batteryless grid-tie inverter.
You know any of t
Hi,
Every summer I get a few calls from annoyed hot water customers who can't
stand hearing their boiler fire merely to keep the indirect tank up to
setpoint temperature, when of course the solar preheat tank is at 160
degrees or better at mid-day. So what's the best way to transfer heat, in
es
Chris,
This issue is being covered in the RE media quite actively, as
threats to industry success such as these can set precedents in
other states.
Check out
http://www.greentechmedia.com/articles/read/fight-over-battery-backed-solar-in-southern-california?u
We just advise to shut off the boiler when there is no heating loads.
Simple!
Jeremy
All Solar
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
> On Sep 24, 2013, at 4:19 PM, "Kirk Herander" wrote:
>
> Hi,
>
> Every summer I get a few calls from annoyed hot water customers who can’t
Allan: I know, THAT is a major concern of mine. Is anyone else having
this problem?
I'd hoped there would, by now be a national/federal "agreement" on what
constitutes a save battery based grid-tie system, but I guess we're not
there yet
--Chris @ the Oasis MT
_
From: re-wre
For years we installed, "Double Whammy" bypass valves enabling folk to go
'solar only', 'solar preheat', or 'primary only', hoping folk would bypass and
turn off their primaries during the summer season. We did this ourselves for
years. However, going back on those 'DW' systems years later a
"As SCE wrote in a July memo for solar and storage contractors
([https://www.sce.com/wps/wcm/connect/7bfb9fcc-b277-4646-9ac2-7700e03914bf/Battery_Backed_Storage_NEM_Eligibility.pdf?MOD=AJPERES]
PDF), “if a renewable generator is modified so that the battery storage system
is integrated into the
Hi Ross,
Just back from the site and I do have a couple of questions if you don't mind.
- Shock absorber appears in good shape other than the blown out
polyurethane bushing. I can easily find complete replacements for the whole
shock absorber, but haven't found anyone selling just the
Kirk,
After some experience with exactly the complaints you have been getting
(the sound of the boiler running drives people nuts), I wouldn't install
SHW on an indirect/boiler system without a bypass. It's just an extra
pipe and two ball valves. A pipe with a valve going from the output of
t
Kirk,
We install this standard on basically all of our two tank systems. Small
circulator w/ check valve from domestic tank HOT to solar preheat tank COLD.
The 'makeup' water for that line is the one already installed, preheat HOT to
domestic COLD. It operates on a delta-T control on both tanks
Nathan,
I would love to see the schematic of how that works, we run into these
issues occasionally.
On Tue, Sep 24, 2013 at 7:55 PM, Nathan Stumpff wrote:
> Kirk,
>
> ** **
>
> We install this standard on basically all of our two tank systems. Small
> circulator w/ check valve from domestic
Just brought it up with AEESolar and they can supply red and black PV Wire.
In reference to marking the conductor polarity with tape, wouldn't that
fall foul of the NEC rule that only allows wire colouring on conductors
larger than #6?
On Tue, Sep 24, 2013 at 2:17 AM, Ray Walters wrote:
> All
200.6 allows 3 continuous white stripes to identify the grounded
conductor on wires smaller than #6, so All cable's marking would
qualify, we just can't field tape it. (which makes sense: if the white
tape falls off, and you're left with 2 black wires, you're in for
trouble...)
Second, we are
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