, 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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but that 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 got from
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 Energy"
s
327=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 appreciated.
Kent Osterberg
Blue Mountain
I have also found that the Plews battery filler works well for most L16
batteries. One does need to be careful in recommending it because there
are some batteries that it fills higher than the recommended amount.
Also, be aware that this type of filler will continue to fill a bit
after the
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
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 and Happy
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 10:02 AM, Kent
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
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 the Sierra AHJ's
. 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 11:24 AM, Ray wrote
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 though they don't include the charge
attached
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
. 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, 2020, 12:10
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 just came across
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.bluemounta
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.
Cove, OR
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 secti
.
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 dryer runs just
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 been
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.
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 question
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 "funct
Remote Solar
303 505-8760
On 3/23/20 10:30 AM, Kent Osterberg wrote:
I like that approach, Jay. Great idea. It gets the job done and is
self contained - using only the features of the inverter. The remote
power off could still be used with another remote switch. If there
aren't enough aux output
.
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 Kent,
Yes
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 control
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 home
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
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 Iota
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 3:27 PM, Mark
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 Solar
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 sunny
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
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
.
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 fusible disconnect
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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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 Osterberg
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 Mountain Solar, Inc
, 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 Mountain Solar, Inc
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 was having
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 4/15
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.
www.bluemountainsolar.com
t
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.
www.bluemountainsolar.com
t
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.
Kent
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
on the
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, Inc
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: 541-568
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:
Hi
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 Herander wrote:
Hello
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
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.
*Jason
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
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 wrote
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 required Romex that it is
listed
-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
Blue Mountain Solar, Inc
Does anyone happen to have one or two AstroPower AP1206 120-watt modules
that they can part with? If you do, please contact me off list. Thanks.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
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the SQ D QO or HOM 6-12L100 or 8-16L100 panels that can
be fed with main lugs that are on opposite ends (left for L1 and right
for L2)? Seems like you shouldn't apply the 120% rule to these either.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 10/15/2012 9:32 AM, August
with the time sync signal, I'd guess that the
installation must be close to the substation where the signal originates.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 10/9/2012 9:20 AM, Jeff Wongstrom wrote:
Kent,
I just talked with Mike in the meter department
.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 10/8/2012 9:34 AM, Jeff Wongstrom wrote:
Hello wrenches,
We have a Fronius IG3000 that chronically and frequently
cycles into and out of a state 104(grid frequency
See 690.13. There must be a means to
disconnect all conductors of a PV system. If it is a normally
grounded array you are not allowed to put a switch in the grounded
conductor, except for circumstances added in the 2011 code.
Kent Osterberg
Blue Mountain
ray, which will probably become more common as
equipment is designed to operate that way, both conductors are
supposed to be switched in the disconnect. In that case there
shouldn't be any white wire going to the PV array.
Kent Osterberg
Blue Mountain
loop.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 9/7/2012 7:40 AM, Jeff Irish wrote:
A customer of ours has recently suffered lightning damage to 31 out of
160 top of pole mounted modules. This is the first time in 10 years
that I've seen modules
induced voltages.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 9/7/2012 11:14 AM, Jeff Irish wrote:
Kent,
Surge protection is at the inverters, 200 feet away, on both the AC
and DC sides. Nothing at the array; never thought we'd need
meter can be used to
record net energy - behave like most disk-type meters; ignore energy in
one direction - behave like a detented meter; or record both incoming
energy and outgoing energy separately - a two register meter.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
Jesse,
Sometimes the best thing you can do for a customer is document, in
writing, what's wrong. And walk away if they aren't willing to fix it.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 8/24/2012 6:36 PM, Jesse Dahl wrote:
Im with you on the wisdom
Fellow wrenches,
If anyone happens to have a Mitsubishi MF170 that is available, please
contact me off list. I need one to add to a customer's small system.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
, for about 8 or 10
seconds, while data are sent. I managed to capture the event with a
scope and the waveform distortion is probably well less than 2% and much
less than the distortion inverters are to allowed cause.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568
. Until Enphase comes up with a
fix, I won't install any more Enphase inverters.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
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for various technologies.
--
Kent Osterberg
Blue Mountain Solar, Inc.
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with micro-inverters. A few small loads
on this panel just lowers the current on the bus bars. The risk that the
120% rule is supposed to address is the possibility of overloading the
bus bars. In the case of the ac combiner that could happen if someone
were to add some very large loads to it.
Kent
remote is
connected). So, if the default settings aren't adequate, your
customer's will need a remote. They need it to equalize the batteries
anyway. And since every battery system should have a battery monitor,
there may as well be a remote for the purpose of using the Magnum BMK.
Kent Osterberg
of the plates.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 6/1/2012 1:28 PM, Allan Sindelar wrote:
Wrenches,
A long-time off grid client has a 48V Outback VFX system, with 1,680
watts of PV and two strings (16 batteries total) of Deka L16s,
installed last October
Steve,
It would be appropriate for the GFDI to have 80-amp rated contacts that
do not have an over-current trip mechanism. IMHO, the fact that they can
trip on over-current and unnecessarily interrupt the dc system bond is a
serious design flaw.
Kent Osterberg
Blue Mountain Solar, Inc
is designed to boost the current when the voltage (and
resistance) are less than optimum, so I think it would improve the power
transfer.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/19/2012 12:35 PM, Mick Abraham wrote:
Hi, Wrenchies~
Kindly educate me regarding PV
that are not
appropriate. Keep a copy of how you left the the system programmed in
case there are ever any questions or need to reprogram it again later.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/15/2012 1:44 PM, Glenn Burt wrote:
Hello wrenches,
I am quoting a job to do
there are
local codes specifying otherwise, MC cable should be allowed. Even that
is overkill for a small 12-volt module.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 5/3/2012 9:34 AM, Jason Szumlanski wrote:
I'd like some help with code references for an inspector
I've got off-grid customers where both the husband and wife use oxygen
at night. Because of energy supply limitations they use a liquid O2
system. But that may not be practical for a weekend use cabin.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/21/2012 12:12 PM
controller output anyway. Midnite's instructions show the GFP on the
charge controller input, but their 80-amp GFP is a single.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com http://www.bluemountainsolar.com
On 4/17/2012 11:08 AM, Nathan Stumpff wrote:
Wrenches,
In a job
: the GFP simply
needs to open both PV+ and PV-. The manufacturers need to step up and
correct this. The NEC needs to be changed to require it. This won't
reduce the risks at the PV array, but it is certainly worth it to design
components that don't but homeowners at unnecessary risk.
Kent Osterberg
of 110.3(B). I find the present situation very disturbing.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 4/18/2012 8:28 PM, Philip wrote:
Hi Kent,
I wanted to add a little more re positive grounding. OutBack's
communication structure, like many other
output anyway. Midnite's instructions show the GFP on the charge
controller input, but their 80-amp GFP is a single.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/17/2012 11:08 AM, Nathan Stumpff wrote:
Wrenches,
In a job coming up I have a customer with an existing
the latitude. This
solution produces much less energy the maximum possible. And, of course,
ignoring the value of the land or roof space isn't practical either.
Ultimately, you have to look at what limits apply to the problem and
work from there.
Kent Osterberg
Blue Mountain Solar, Inc
It is interesting that when you download the manual for the Sunforce
400, you get a 2002 vintage SWWP Air-X manual.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/3/2012 5:24 PM, Dan Fink wrote:
Esteemed Wrenches;
I've been watching this thread closely, and I'm
with a
low-voltage high-current Solarex module.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
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Nathan,
There are no jumpers, each j-box has a single terminal. It has 4 square
multi-crystalline cells, a 2 bronze colored frame, and measures 17.5 x
42; just a little smaller than a MSX-60.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 3/24/2012 10:26 AM, Nathan
Allan,
Your right about the modules from Carrizo being made by Arco. And
weren't they mono-crystalline? Three of these modules in series would be
30 cells and not enough voltage for charging a 12-volt battery. But I
think that's the biggest similarity to a Quad-Lam.
Kent Osterberg
Blue
.
--
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
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I agree, Brian; especially when the battery system is large. It's
important to design the room so it can be in compliance with NEC 480.9.
(A) Ventilation, (B) Guarding live parts. The locked door qualifies, and
(C) Working space.
Kent Osterberg
Blue Mountain Solar, Inc
to
fracture from any minor stress. The glass will usually have larger
fragments in that area and finer fragments farther away.
A shorted diode should be warranty issue.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 3/13/2012 12:21 PM, benn kilburn wrote:
Wrenches,
I recently
boB,
Most local codes, have granted a delay on implementing arc fault
protection. Also, the code only requires series faults to be cleared.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 3/11/2012 8:28 PM, b...@midnitesolar.com wrote:
On 3/11/2012 7
Mac,
It probably doesn't pass the low cost hurdle, but this sounds like the
perfect situation for a Dankoff Suncentric pump.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882
On 2/24/2012 7:49 AM, mac Lewis wrote:
Hi wrenches,
I am looking for a relatively
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