well with it.
Kent Osterberg
Blue Mountain Solar
On 1/30/2025 5:59 PM, Kirk Herander via RE-wrenches wrote:
Fortress tells me they just released the latest firmware to deal with
half-wave loads. This version was put out for download a few days ago.
In my case, they say it "might&quo
voltage to ground.
Kent Osterberg
Blue Mountain Solar
On 1/19/2025 6:57 AM, Jay via RE-wrenches wrote:
Question about the fuses.
For testing could you put a short test wire across the ends of the
fuse holder and use a clamp on to test for current? Would it cause any
damage?
Instead of potenti
The SunPumps SCS pump <http://www.sunpumps.com/Category/SCS -
Submersible Pumps> should do what you need.
Kent Osterberg
Blue Mountain Solar
541-975-3930
On 11/14/2024 1:27 PM, Michael Morningstar via RE-wrenches wrote:
Wrenches,
Any recommendations for a "high voltage" Arra
two PV modules can probably ship via UPS.
Kent Osterberg
Blue Mountain Solar
541-975-3930
On 11/13/2024 2:54 PM, Sam Haraldson via RE-wrenches wrote:
Wrenches,
What are your preferred brands for small pole mount installs? I'm
talking really small (one or two modules, probably sub 1kw) tha
I have a customer that is looking for a solar installer in Post Fall,
Idaho. If any of you are working in that area please let me know. Off
list please. Thank you.
Kent Osterberg
Blue Mountain Solar
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oblem with the Xanbus connection to the battery monitor. Since the SOC
returns to the correct value for the next data packet, I'm pretty sure
that there is nothing wrong with the battery monitor.
Kent Osterberg
Blue Mountain Solar
On 5/3/2024 6:54 AM, Mac Lewis via RE-wrenches wrote:
Hell
-blocks. I installed a couple of these a few years ago: one
on a large engineered concrete pad and another on cast in place concrete
blocks (similar to but smaller than eco-blocks). It takes a lot of
anchor screws.
Kent Osterberg
Blue Mountain Solar
On 3/21/2024 10:44 AM, Kristopher Schmid
ion, there will be a N-G bond
located there and none will be allowed in the generator.
Kent Osterberg
Blue Mountain Solar
On 3/13/2024 2:19 PM, Mick Abraham via RE-wrenches wrote:
Hi, Mechanix~
My off grid project gig has redundant 120y208 generators that need a
200a "break before make&q
huge - especially compared to the 75 watt modules I started with.
Kent Osterberg
Blue Mountain Solar
On 3/10/2024 1:14 AM, Ray Walters via RE-wrenches wrote:
That's just distortion in the image, from when I zoomed and cropped
it. Its module frame direct to the 2" angle aluminum su
Ray,
It appears that there is something between the module frame and rail
that may have introduced the frame crack. Perhaps as it was tightened,
and not due to the wind. What is the light material that looks like it
is sandwiched between the module and rail?
Kent Osterberg
On 3/8/2024 4:23
clamps, and for the life of me I don't understand
the logic of of a top mount clamp on a TPM.
Kent Osterberg
Blue Mountain Solar
On 3/8/2024 2:30 PM, Jeremy Rodriguez via RE-wrenches wrote:
With news that PLP has dropped the TPM line, what are you all recommending for
a good mount for up t
multimeter in this manner: 1) that the current ranges are usually fused
and the fuse may not clear a high voltage arc, and 2) switching current
ranges may temporarily open the circuit.
Kent Osterberg
Blue Mountain Solar
On 3/8/2024 8:29 AM, Sam Haraldson via RE-wrenches wrote:
Dear Wrenches,
I&#
hat it is hard to find the spot to start
the generator.
Spring is about here!
Kent Osterberg
Blue Mountain Solar
On 2/10/2024 10:09 AM, William Miller via RE-wrenches wrote:
Kent:
You raise a good point. I am now trying to correlate voltage versus
SOC versus battery current.
I do know
the micro fractures connect to each other and the whole pane breaks up.
You can't do much about sun showers but you can certainly avoid spraying
the hose on hot glass.
Kent Osterberg
Blue Mountain Solar
On 10/20/2023 1:47 PM, Jason Szumlanski via RE-wrenches wrote:
I don't unde
fracture direction.
Kent Osterberg
Blue Mountain Solar
On 7/16/2023 2:58 PM, Kent via RE-wrenches wrote:
Found some damage to a customer's Grape CS-S-180-DJ PV modules this
morning. Unlike anything I've ever seen; so I'm hoping that someone on
this list can tell me the cause. I
I think these modules are about 12 years old. I didn't have a voltmeter
or ammeter with me this morning when this was discovered so I wasn't
able to check the output.
Kent Osterberg
Blue Mountain Solar
On 7/16/2023 3:06 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
Hi Ke
mWyy89tqaEEGvzkvEps?usp=sharing>
so you can inspect them. While it looks like there has been some
localized heating on the traces, there isn't any evidence of damage on
the rear of the PV modules. These are on an off grid system charging
some 12-volt batteries. Thanks.
or on the load side.
Kent Osterberg
Blue Mountain Solar
On 7/11/2023 5:19 PM, Mac Lewis via RE-wrenches wrote:
Hello Wrenches,
I'm trying to solve an issue with an older Outback FX system. It's a
quad stack of Outback 3648 FX inverters and he has a couple of
Fortress eVault an
on a cloud server. I have been using one on my personal
system for many years. Transmits about 200 feet from the PV array to the
portable monitor that I keep at the house.
Kent Osterberg
Blue Mountain Solar
On 5/11/2023 1:20 PM, Larry Brown via RE-wrenches wrote:
Does anyone have a recommend
Jeff,
I'm nearly as far away from NE as one can be in the continental US, but
I have a HIP-195BA19 orphan, never installed, sitting in my garage.
Kent Osterberg
Blue Mountain Solar
70177 Ponderosa Ln
Cove, OR 97824
cell: 541-975-3930
On 4/21/2023 8:45 AM, Jeff Clearwater via RE-wre
the Sol-Ark user area to Power the Tigo
Optimizer TX transmitter)
Why use Tigo as an example for the pins purpose in one location and then
say don't use them do it in another?
Kent Osterberg
Blue Mountain Solar
On 11/16/2022 9:38 AM, Nick A Lucchese via RE-wrenches wrote:
All, I believe
Jason,
Since the difference is not a consistent percentage, I'd look at the
consumption meter settings. Make sure that the solar energy is accounted
for correctly: either included or not included with the consumption
metering.
Kent Osterberg
Blue Mountain Solar
On 10/27/2022 8:
William,
I think Right Hand Engineering
<https://www.righthandeng.com/rhe_swma_memory_adapter_manual.pdf> still
makes the device that will keep the SW memory alive. Batteries need to
be changed every few years.
Kent Osterberg
Blue Mountain Solar
On 10/20/2022 9:43 AM, William Mill
I've seen a couple of those old Trace breakers with damaged set screw
connectors. Its been a while back but I replaced one of the old Trace
breakers with a Magnum breaker. Easy replacement, but you'll need to put
lugs on the cables. That's a good improvement anyway.
Kent
This lacks the protections you would find in a traditional battery
charger, but can work.
2.5 volt 60-amp power supply like the Meanwell RSP-320-2.5
https://www.meanwellusa.com/upload/pdf/RSP-320/RSP-320-spec.pdf
These are available at Digikey.
Kent Osterberg
Blue Mountain Solar
On 1/20/2022
Outback forum in 2014 about
this issue:
https://forum.outbackpower.com/viewtopic.php?f=28&t=7448&hilit=Kent+Osterberg+FNDC
<https://forum.outbackpower.com/viewtopic.php?f=28&t=7448&hilit=Kent+Osterberg+FNDC>
Folks are still complaining about this bug today. Just search for &
10% loss in the system. And while the transformer
hysteresis losses may be a less than 1% of the transformer capacity,
they are 24/7 independent of the load. The supply side costs to provide
for the lost energy in the transformers needs to be considered too.
Kent Osterberg
Blue Mountain Solar
Bill,
I've had a couple customers have great success with generators from
Wrico International in Eugene, OR. Their 7.5 kW generator uses a Perkins
diesel engine. An ex-fisherman client claims that the Northern-lights
generators are the most reliable.
Kent Osterberg
Blue Mountain Solar
g batteries with the generator, and the inverter has the
ability to reduce its output if it is too hot.
Kent Osterberg
Blue Mountain Solar
On 9/14/2021 5:56 PM, William Miller wrote:
Friends:
A couple of years ago we installed an all sealed Outback FX system.
All of the FX inverters were equi
Fellow wrenches, has anyone else had failures of the SMA TS4-R-F rapid
shut down devices this summer? We did the factory recall replacement for
24 of these for a customer last summer, this summer several have failed.
Not sure what to think of this. Maybe they are getting too hot ...
Kent
so be
adjusted with a smart phone app.
I believe that your distributor for Lorentz Pumps is GenPro Energy
Solutions.
Kent Osterberg
Blue Mountain Solar
On 6/15/2021 2:15 PM, jay wrote:
Does anyone have or know where I can get the pump curves with voltages?
I’m trying to limit flow by
, certainly beyond its specs.
Most "dumb" voltage converters operate around 85% efficiency. If taking
that much loss, it would be better to use a lower power, higher voltage
PV module with a common MPPT controller. That is one less part to fail too.
Kent Osterberg
Blue Mountain Solar
On
Jason,
Would a 96 cell Panasonic module fit in the space you have available? It
would give you sufficient voltage to charge this battery.
Kent Osterberg
Blue Mountain Solar
On 4/12/2021 10:40 AM, Jason Szumlanski wrote:
I want to charge a 51.2V LiPO battery with a single 420W 72-cell
module
Wrenches,
Does anyone have a supply of Zhonghuan PVZH202 connectors? These are
being used on the Mission Solar MSE60A310 modules. I can't find any
except in multiples of 1000 from Zhonghuan.
Kent Osterberg
Blue Mountain Solar
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is only possible when the battery doesn't go through a
full discharge cycle. There are many sources on the internet that say 98
or 99%, but that is wrong, among us let's get it right.
Kent Osterberg
Blue Mountain Solar
On 3/20/2021 7:01 PM, Jerry Shafer wrote:
Wrenches
So what l go
case screws are partially tightened, the paper is removed.
Kent Osterberg
Blue Mountain Solar
On 2/14/2021 8:08 PM, toddc...@finestplanet.com wrote:
has anyone successfully done this without removing the inverter from
the wall?
todd
On Sunday, February 14, 2021 6:26pm, "Foxfire E
pdmdl=10327&refresh=6024628387f561612997251>?
I've got one installed per the manual and am having a devil of a time
getting it to stay latched onto the generator with the external
contactor. Can't even get it to stay latched on with no load. All advise
on getting this to work is a
electrolyte level reaches the end of the nozzle. One trick to
using properly it is to listen to the way it is bubbling. When the sound
changes, it is time to stop.
Kent Ostberberg
Blue Mountain Solar
On 2/10/2021 10:22 AM, Dave Angelini Offgrid Solar wrote:
The Plews Lubrimatic water fill jug
Not for 120/240 split phase.
Kent
On 1/6/2021 11:11 AM, Maverick Brown wrote:
Whaaat? Can’t you use Multi Unit Config using the SCP Advanced menu to set
additional inverters as Slave?
Thank you,
Maverick
On Jan 6, 2021, at 1:00 PM, Kent Osterberg wrote:
I just finished a call with
ems to
be to reset a slave unit with the SCP and then reprogram it.
No longer as enthusiastic about using Schneider for off grid power.
Kent Osterberg
Blue Mountain Solar
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The "Contact Us" page on their website gives a contact number in China.
And none of the documentation shows a UL listing. I would tell the
customer that I can't install it - too risky.
Kent Osterberg
Blue Mountain Solar
On 1/4/2021 3:33 PM, Chris Schaefer wrote:
G'Day
output wave forms on most generators, and when only one inverter is
charging, the harmonics will show up on the neutral.
Kent Osterberg
Blue Mountain Solar
On 12/19/2020 2:33 PM, jay wrote:
HI All,
I have a client with a older Kohler 8-10kw generator, VFX 3648 stacked
inverters, newer rolls
Mark,
That's to be avoided if possible. You wouldn't be allowed to put
batteries in a battery room.
Kent Osterberg
Blue Mountain Solar
On 10/22/2020 10:36 AM, Mark Frye wrote:
Perhaps we should be applying Article 500 to the installation of
batteries as well.
On 10/22/2020 10:0
Jay,
I suspect it is because FMC is not vapor tight and could be an
unintentional path for hydrogen gas, or could allow acid vapors to
condense on the enclosed wiring. LFMC (aka liquid tight) is allowed in
battery rooms.
Kent Osterberg
Blue Mountain Solar
On 10/22/2020 9:07 AM, jay wrote
wonder why the cabin in the woods flies under the radar
rather than attempting to comply with the excess of regulations that get
heaped on a small power system?
Kent Osterberg
Blue Mountain Solar
On 10/20/2020 8:50 AM, Dave Angelini Offgrid Solar wrote:
Thanks Kent,
A question, most of t
ode has created. Its not just renewable energy systems in
that situation. All new utility services have the same requirement.
Anyone having a beef with their neighbor can shut off their power. Best
if you wait until they are on vacation...
Kent Osterberg
Blue Mountain Solar
On 10/20/2020 11:2
hould make off-grid folks think about using
a power shed. The power shed is not a dwelling so 2020 NEC 480.7(B)
doesn't apply.
Kent Osterberg
Blue Mountain Solar
On 10/19/2020 8:34 PM, Ray wrote:
I've used Blue Planet, so I guess I have used an actual UL listed ESS,
even t
ttached
to decking or to purlins has made this topic a bit difficult to follow.
Kent Osterberg
Blue Mountain Solar
On 10/19/2020 7:15 AM, William Miller wrote:
Friends:
I have figured that the best way to improve a standing seam
installation is to add more S5 clips. Each seam has a finite numb
motor. Without a soft start you aren't going
to reliably start the 2HP pump while running other loads. Even the 1.5
HP is problematic.
Kent Osterberg
Blue Mountain Solar
On 9/22/2020 12:13 PM, Jerry Shafer wrote:
Go look at grudfus SQFlex they can go pv direct or AC in
Jerry
On Tue, Sep 22, 2
Don't just nag on Outback. It's the same issue with the Schneider
Electric XW distribution panel and with the Midnite E-panels.
Kent Osterberg
Blue Mountain Solar
On 9/13/2020 1:10 PM, Ray wrote:
I'm taking a Mike Holt course on NEC 2020 changes for my license
renewal, and I j
r
to these vinyl cushioned cable clamps
<https://www.fastenal.com/products/details/0762883> that could be held
with 3/4" tee bolts. I believe that the tee bolts are Sunmodo part
B20015-004, it's not a catalog item but you can order them.
Kent Osterberg
Blue Mountain Solar
www.
ed on the ground
mount, there is a cable clip designed to attach to the 3/8" bolt slot,
part A20162-001, unfortunately it was sized for the older Enphase cable
and isn't much use for anything else.
Stainless cable ties ...
Kent Osterberg
Blue Mountain Solar
70177 Ponderosa Ln.
el. Pretty sure vent pipes under the array are not a good idea for
many of us.
Kent Osterberg
Blue Mountain Solar
70177 Ponderosa Ln.
Cove, OR 97824
www.bluemountainsolar.com
On 8/31/2020 6:40 AM, Matt Partymiller wrote:
Scot,
What do you interpret the last part of that section to
ency noise.
Kent Osterberg
Blue Mountain Solar
On 8/15/2020 8:06 AM, Matt Sherald wrote:
Hello All,
My curiosity was piqued by a recent customer complaint. I'm hoping
someone has bumped up against this issue before.
The customer has a OB FXR2812 and a 3,000W Honda gen.
Her gas clothes
temperature, maybe around -10%, should be included too.
It looks like Cotek recommends a minimum cable size of 1/0, so out of
fear of starving the inverter of enough voltage, I wouldn't use any smaller.
Kent Osterberg
Blue Mountain Solar
On 8/11/2020 3:18 PM, peter...@pobox.com wrote:
I have
The sketch on the datasheet shows that the TM version doesn't have the
solder tab on the connector. So, no not interchangeable.
On 7/6/2020 7:02 PM, William Miller wrote:
Friends:
I have several FX inverters with smoked AC relays. The relay is a
Deltrol 375P. The P stands for PC mount. A
uctor
would be redundant.
Kent Osterberg
Blue Mountain Solar
On 6/15/2020 12:24 PM, William Miller wrote:
Wrenches:
Well now that the NFPA has acknowledged that GFDI protected circuits
do not solidly ground the “grounded“ conductor, and we know they can’t
be white in color, it begs the next que
James,
Here's the code reference: 2017 690.31(B)(1). Only solidly grounded PV
system conductors shall be marked in accordance with 200.6 (white or gray).
Kent Osterberg
Blue Mountain Solar
On 6/13/2020 5:56 PM, James Jarvis wrote:
Brian, thank you very much. With your hint of "
Ray,
I agree it is a kludgey way to accomplish a low battery cut off. But, it
doesn't change the no load draw issue. No load draw is still a problem
even if the normal low battery cut off adjustment has enough range. At
least with most lithium batteries there is a secondary shutoff.
river.
None-the-less, considering that Scneider Electric has made a lot of
firmware changes to make the inverter compatible with lithium batteries,
it is baffling that the low battery cutout hasn't been addressed.
Kent Osterberg
Blue Mountain Solar
On 3/22/2020 6:18 PM, Jay wrote:
Hi
Jay,
Do you mean: use the Aux relay to activate the Remote Power Off? What is
the low battery setting range for the Aux relay? I don't see it in the
manual.
Kent Osterberg
Blue Mountain Solar
On 3/22/2020 4:04 PM, Jay wrote:
Ray,
Have you heard bought about using the Aux relay to co
Hugh,
I've seen these symptoms before. The problem was a failed output relay
on the ac board.
Kent Osterberg
Blue Mountain Solar
On 3/9/2020 9:25 AM, Hugh Piggott wrote:
Hi Wrenches,
I wonder if anyone can tell me what is happening here?
I have an Outback VFX that I used for my own
Jay,
My point is that even if the diversion load can handle all of the watts
and the PLC is fast enough to react to changes in the ac voltage, the
system will probably still be unstable because the battery charger is in
the control loop.
Kent Osterberg
Blue Mountain Solar
On 3/4/2020 9
er 80 amps. That alone seems risky with a 100Ah battery. To add to
the difficulty of this approach the battery charger would add a delay
time in the control loop that would almost certainly result in an
unstable system.
Kent Osterberg
On 3/3/2020 7:53 PM, Jay wrote:
Or a charger such as Iot
ruin the XP inverter. It would work if you had a inverter with a
bidirectional architecture like a Magnum, Outback, or Schneider
inverter. But even then you'd have a hazardous situation because the
cooling water is going to evaporate.
Kent Osterberg
Blue Mountain Solar
On 2/29/2020 3:2
don't set these inverters up in battery priority mode; it'll do
nothing except ruin batteries.
Kent Osterberg
Blue Mountain Solar
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Need to edit this post: The micro inverters are UL listed for grid
connected operation.
What I've noticed is that most of the AIMS inverters are not UL, ETL, or
otherwise third-party tested. And none seam to be designed for utility
interactive operation.
Kent Osterberg
Blue Mountain
What I've noticed is that most of the AIMS inverters are not UL, ETL, or
otherwise third-party tested. And none seam to be designed for utility
interactive operation.
Kent Osterberg
Blue Mountain Solar
On 2/21/2020 1:37 PM, wes kennedy wrote:
Hi Jeff,
I think the biggest split phase
Would any of you that have installed the Sol-Ark inverters care to
compare the audible noise level to other inverters such as the XW+ or
the Radian?
Kent Osterberg
Blue Mountain Solar
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Allan,
I believe the original Mate is still available. At least my distributor
still has them in stock.
Kent Osterberg
Blue Mountain Solar
On 9/5/2019 8:01 PM, Sindelar Solar wrote:
Wrenches,
I have a customer with a 2005-era Outback VFX3648-based off grid
residential system. Her
the mismatched connector is the actual cause of the problem.
Anyone else ever notice find PV modules with mixed MC4 and H4 connectors?
Kent Osterberg
Blue Mountain Solar
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Jesse,
The controller is supposed to limit the output current to 80 amps. But
the 80-amp GFDI breakers will trip anyway.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/28/2013 9:01 PM, Jesse Dahl wrote:
When I was looking at the Outback Flexone setup today during
Thanks for your input, Carl. That data looks pretty grim. This is a
serious black eye for our industry.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/20/2013 12:36 PM, Carl Adams wrote:
Ken,
We installed our first Enphase units in Dec 2009, and our *last*
Enphase
fine.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/18/2013 3:26 PM, Jason Szumlanski wrote:
Is there any reason I can't do this? I have an existing string of 3
M190's and want to add 7 M215's. I plan to tie into the same j-box,
which has #10 going to a fusi
d to fail before the site met Enphase's criteria
for replacement? I'd like to get an idea of how long I'll be in this mess.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
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nergy
production with the 135° azimuth, the optimum tilt angle is about 60°
and that gives 12% more energy in December than the 35° tilt would
(without considering how much better the steep tilt does at shedding
snow). The SE roof with the steeper pitch is certainly the better choice.
Kent Oste
Thank you, David. I knew someone monitoring this list would know if it
would work.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/13/2013 4:06 PM, David Katz wrote:
Hi Kent,
It will blow up. The Prosine is not bi-directional. You can only use an
H-Bridge type
Has any put together an ac-coupled system using the Xantrex ProSine
inverter? I've got a customer that wants to try this and I don't even
know if it is possible to do with the ProSine. I'd rather not be the
first to give it a try.
--
Kent Osterberg
Blue Moun
onths
ago, I was asked to participate in a survey regarding Xantrex products
and service. My responses must have got someone's attention because I
got a follow-up call about the survey. There never has been a follow-up
to correct this customer's problem inverter.
Kent Osterberg
Blue
The problem they'll have with a completely flat module is that rain
won't wash the dust off.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/20/2013 10:09 PM, Benn Kilburn - DayStar Renewable Energy wrote:
Carl,
I realized mis-read/answered your question. I
Enphase lists the standard operating range for the 208-volt 3-phase
configuration as 183 to 229 volts. Seems like 220-volt 3-phase might
work with a little caution about wiring losses.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/15/2013 4:28 PM, Larry Crutcher
Dave,
The problem occurs when the kWh meter sends data. I would expect any
neighbors' meters on the same transformer to cause trouble. And probably
neighbors that are not on the same transformer too.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On
le strings of batteries. 2011 NEC 240.21(H) allows
overcurrent protection to be installed as close as practical to battery
terminals - even in classified locations.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/6/2013 7:29 AM, Phil Undercuffler wrote:
Ray,
690 d
y that
would be different for a utility scale system where clouds could reduce
the output of an entire plant in a few short amount of time. The
article may have been in /Solar Today/, /Solar Industry/ or /Sun & Wind
Energy/, unfortunately I can't find it now so maybe it was somepla
How about this unit from Tyco that is rated 100 amps at 900 volts:
http://www.te.com/catalog/pn/en/9-1618389-8?RQPN=LEV100A5ANG
and only $110 at Mouser
<http://www.mouser.com/ProductDetail/TE-Connectivity/LEV100A5ANG/?qs=%2fha2pyFadug1f8yBSHppXCbQVN7JiNYp4qGSI0ewLzHnRcQBcz6gcA%3d%3d>.
ommon wall wart power supply would
operate it.
About $150 at Mouser.com
<http://www.mouser.com/Search/Refine.aspx?Keyword=G9EB>
You shouldn't have to switch at 600 volts. It should work just as well
to short the lowest voltage pair of modules.
Kent Osterberg
Blue Mountain Solar, Inc.
w
wall wart power supply would
operate it.
About $150 at Mouser.com
<http://www.mouser.com/Search/Refine.aspx?Keyword=G9EB>
You shouldn't have to switch at 600 volts. It should work just as well
to short the lowest voltage pair of modules.
Kent Osterberg
Blue Mountain Solar, Inc.
w
rging batteries in renewable energy systems. Considering the
market for these, the normal unit is probably set up to provide a float
charge voltage.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 3/5/2013 7:17 AM, jay peltz wrote:
HI All,
I know many of you like
I've got a customer that has outside lights that are only on when the
generator runs. Also has a siren/strobe light alarm that comes on when
the batteries are below the 2-minute threshold for the generator start.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 54
roof should be permitted. There should also be an accessible disconnect
elsewhere (at the panel feeding the combiner for instance.) That (may)
makes the breakers in the ac combiner supplementary and thus they
wouldn't have to be accessible.
Kent Osterberg
Blue Mountain Solar
grees before the zero crossing. Supposedly,
they increase the firing angle to get a stronger signal from sites
that are hard to reach.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 2/7/2013 2:13 PM, Nick Soleil wrote:
transmits data via 433 MHz radio instead of power line carrier. Noisy
inverters don't seem to bother it. Efergy meters are ETL listed, and are
considerably cheaper than TED.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 1/16/2013 2:07 PM, Kirk He
If you are using the 2011 NEC, 705.12(D)(2) has an exception to the 120%
rule for inverters with energy storage to allow for operation of loads.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 12/30/2012 4:27 PM, Jeremy Rodriguez- All Solar Inc. wrote
r MPPT tracking, over the Midnite Classic or Morningstar TriStar MPPT
charge controllers.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 12/16/2012 10:51 AM, Kirpal Khalsa wrote:
Allan...indeed this is a limitationand yes i agree with you that a
higher voltage charge c
rated to provide 63 amps continuously. Most 200-amp service panels don't
really have 200 amps available except for short durations.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 12/12/2012 4:43 AM, Jason Szumlanski wrote:
See 690.10, 690.1, and 690.3
My understanding has been that the Soladeck has only been listed for DC
wiring. Perhaps they have a manufacturer rep on RE-wrenches that can
clarify.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 11/25/2012 6:20 AM, Dave Palumbo wrote:
Rich,
We have been using
Article 100 has a definition for service. It doesn't seem like a PV
system or a battery based inverter for off-grid fit the definition.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 11/8/2012 8:22 PM, Nick Vida wrote:
Hi Wrenches,
Thanks for you comments. Fun fo
There is no need for an exception. Even in the 2008 NEC, 690.31(E) is
clearly about the dc wiring. The proposed informational note adds
nothing except to explain that ac isn't dc.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 11/3/2012 11:09 AM, Dan Fink
osure-types.pdf
<http://www.nema.org/Products/Documents/nema-enclosure-types.pdf>
From NEMA's definitions there is little difference between a type 4 box
and 3R box. But the seal on a type 4 box prevents the entry of blowing
snow while a 3R box doesn't.
--
Kent Osterberg
Blu
d. Don't expect everyone to accept this practice. You might need a
j-box in the attic to change wire type to NMC cable or THWN wire.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 11/1/2012 5:07 AM, Chris Mason wrote:
I remember from a project we were doing that requi
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