Hi Folks;
I am considering hiring an apprentice, and I wanted to know if any else
has tried this, and what advice and experience everyone had to offer.
Also what would be the best way to advertise: Craig's List? /
Wanted passionate techy soul to share warm fires and cold brews with,
watch bea
om:*RE-wrenches
[mailto:re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of
*Ray Walters
*Sent:* Thursday, April 16, 2015 4:50 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Apprentice
Hi Folks;
I am co
1988"
*P*Please consider the environment before printing this email.
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Friday, April 17, 2015 2:53 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Apprentice interview
Hi All;
Than
I agree with Windy and this article, the electric sounders can be
finicky. I've never tried the airline method, but some well folks from
Texas taught me to use an inverted plumbing fitting on a string. When
it hits the water you can feel it on the line, because the small pocket
of trapped a
Gravity only acts downward. The modules are rated to 113 PSF which is
with the module laying flat. If the module is at an angle, it can take
more downward force.
For instance if it is at 70 degree tilt, It could take a downward force
of 113 PSF / cos 70 or 330 PSF.
Its possibly reasonable to
equate
training enabling the apprentice to acheive the target qualification.
On Apr 17, 2015 4:53 PM, "Ray Walters" <mailto:r...@solarray.com>> wrote:
Hi All;
Thanks for the replies so far; I apologize for my misunderstood
attempt at humor in my initial post.
Solar Design Engineer
303 505-8760
On 4/28/2015 6:52 PM, Chris Mason wrote:
I think you should describe the job as a trainee. You can do anything
you want after that. Just don't call it an apprenticeship.
On Tue, Apr 28, 2015 at 8:45 PM, Ray Walters <mailto:r...@solarray.com>>
Hi Luke;
I would say that the ability to think is the primary attribute I'm
looking for, and the difference between an apprentice and a laborer. It
is indeed rare. Most folks really just don't soak up much of the
knowledge we're trying to pass on, either due to lack of interest or
lack of b
oldcastleprecast.com/enclosuresolutions
I was just looking at these enclosures for a potential battery enclosure
to set in the ground for more stable temperatures.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On
Hi Jarmo;
Early solar systems actually tried to use the principle of matching
array Vmpp to battery voltage in lieu of charge controllers. The
biggest issue is that when it is is hot the module voltage can drop
below the battery voltage needed, and when its cold the voltage will
still be to
Most pole mounts do not go to 90 deg. BTW. The pivot would need to
stick out South of the pole. We make specialty racks, and could build
something like this for you.
Contact me off list.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design
Hi Allan;
This is an interesting thread, as all of us ( I think) have gone heavier
on the solar arrays and lighter on the battery banks based on
economics. I too have noticed higher gassing and more water
consumption, and I too have adjusted set points down slightly to account
for this. I th
Hi Bill;
If the battery is in an insulated box indoors, it definitely can over
heat. Also if ambient temps get into the 90s, the additional heat from
charging can push the battery into the danger zone. In hot desert or
tropical climates, it may actually be difficult to keep the battery
belo
I thought I'd post some info on Battery Temp from a few manus:
HUP Solar One: do not exceed 105 F
Full River AGMs: max recommended operating temp 104F
and from Trojan: for every 10C increase in temperature the reaction
rate doubles. Thus, a month of operation at 35C is equivalent to 2
months a
Hi Folks;
In our area, below 0F cold is definitely an issue, but I agree it does
extend battery life if it doesn't freeze. From a design stand point you
can end up with a really large battery: double the size to account for
only discharging it 50% for freeze protection, then double it again
Having the LVD be temperature compensated so that the load is always
disconnected above the freeze point of the battery would be a Huge
Improvement on the whole concept of LVD. In combination with State of
Charge monitoring, like the Whiz bang Jr, would be the most effective,
and just program
I've seen a couple of homemade pole mounts that were really good, but
most are not properly designed. Fabrication experience is good, but the
problems I've seen were design issues, not bad welding. (this goes for
commercial racks too) Ground mounts are less prone to errors, but pole
mounts ar
Around here, wood dry rots around the screws, so after about 5 years,
timber built frames are blowing apart. While it might be possible to do
a decent timber base frame using pressure treated wood and carriage
bolts for the attachments, you could not use wood for the final cross
rails as you no
Yes, amorphous modules degrade faster then crystalline cells. 15 years
will really start catching up with you, that's why we always tried to
stick to monocrystalline when we could.
I think your best option for now is to rewire the array for much higher
voltage. Even your current voltage problem
I agree, scratch my previous suggestion of 8 in series on the Outback
controller. I got so used to Midnites that I forgot how unforgiving
the Outback controllers are with high Voc. Run the Unisolar modules
through the Midnite sizer. http://www.midnitesolar.com/sizingTool/index.php
R.Ray Wal
, jay peltz wrote:
HI Ray,
Can you tell me/us where you have your data on the a-Si having higher
voltage degradation over time?
thanks
jay
On Sun, May 31, 2015 at 11:31 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
Yes, amorphous modules degrade faster then crystalline
I think an important point, is not to connect to their system in more
than one place. You don't want to create any loops that would pick up
the induced current from a lightning strike. We've bonded to the
lightning rod systems at their attachment to ground. The idea being
that if their syste
The breaker post weakness came up on the list a couple of years back,
and Midnite responded by switching to the sturdier post. I haven't
tried the 300 v versions though. I also haven't kept up with what
Outback is using, but that post design should have never been used on
anything beyond stra
Actually its much more cost effective to use charge controllers than GT
inverters for the PV input. Just price out a 4 Kw GT inverter of your
choice compared to a Midnite Classic for instance. It's in the ball
park of 25 cents/ watt savings, and that's not chump change.
I only use AC coupling
HI All;
Anyone heard of or tried these controllers:
https://genasun.com/products-store/mppt-solar-charge-controllers/golf-cart-solar-charge-boost-controllers/
They seem like a great idea: use a single 60 cell module to charge a 36v
or 48v golfcart battery pack. The good old 60 cell (39" x 65")
Besides your note that cordless impact drivers can over torque the
clamps, also they spin the bolts too fast which can lead to spalling of
the SS hardware.
We now hand torque those connects. Finally, most torque specs are for
lubricated bolts. We use anti-seize on the threads before torquing.
phenomenon.
Sincerely,
Glenn Burt
Sent from my 'smart' phone so please excuse grammar and typos.
----
From: Ray Walters <mailto:r...@solarray.com>
Sent: 6/28/2015 17:27
To: RE-wrenches <mailto:re-wrenches@li
Climbing, Safety & Rescue
Wind/PV Design Engineer
Windsine LLC
631-514-4166
www.windsine.org <http://www.windsine.org>
On Jun 29, 2015 12:32 PM, "Ray Walters" <mailto:r...@solarray.com>> wrote:
Anti seize also comes in larger cans with a brush, but it still
c
This is fascinating because while I knew the DC cables had an AC
component, I never realized how much inductance played in the volt drop
to the inverter. Thanks for bringing this to our attention Jarmo.
Which brings up another question based on Benn's question: isn't the
battery itself part of
You would think that a computer device that retails for more than many
laptops would be able to afford more memory, a bigger screen, and an
interface that didn't feel like preWindows DOS.
I just don't even bother with Outback much anymore. Other companies'
solutions work better, are easier to s
Seems like something wrong with the generator, if the Vac is going that
low, or there's a loose connection eating voltage somewhere.
The Outback might still try to charge, but not be able to actually
produce any amps with that low an input voltage.
Check the Vac at the genny when this is happenin
Hi All;
My Fluke 36 clamp on DC meter just died again. It will not zero. This
happened before, and I had it repaired, but I think its time for a new
one, as its 15 years old.
What are folks using these days? I'm looking at the Fluke 376; it does
AC/DC current, but also is rated to 1000 v, wh
o:re-wrenches-boun...@lists.re-wrenches.org>] On Behalf Of
Ray Walters
Sent: Wednesday, July 15, 2015 5:20 PM
To: RE-wrenches
Subject: [RE-wrenches] Clamp on Meter
Hi All;
My Fluke 36 clamp on DC meter just died again. It will not zero.
This happened before, and I had
I thought the APT panels had Square D QOU breakers? Also Midnite makes
an adapter plate that lets you use a newer panel mount DC breaker in the
place of the old medium Heini breakers. Might not help there.
I added an MPPT controller to an APT center a couple years ago, and I
just added a small
7/18/2015 8:27 PM, Ray Walters wrote:
I thought the APT panels had Square D QOU breakers? Also Midnite
makes an adapter plate that lets you use a newer panel mount DC
breaker in the place of the old medium Heini breakers. Might not help
there.
I added an MPPT controller to an APT center a couple
Sindelar wrote:
Ray,
If you have, it wasn't correct. The CFs are 1" wide, the QOUs are
3/4", and the mounting holes are 1" apart. Are you sure?
The CFs have a 125 VDC rating.
Allan
**
On 7/18/2015 10:27 PM, Ray Walters wrote:
I've seen both on the DC side. The QOU
My opinion is that if the L foot has enough surface area it constitutes
a flashing, and that large flashings can actually cause more damage to
the roof than they prevent.
I also agree that an attachement doesn't constitute a penetration. I
just finished an install on a metal roof with hundreds o
Hi William;
First, a sealed L foot is not a sealant only attachment system. It has
quite a bit of surface area beyond the hole just like a flashing, and
has mechanical attachment through the roof to the structure (which a
flashing often does not). I consider an L foot to be a mini flashing fo
array, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/7/2015 12:08 PM, Jay wrote:
Hi Ray
Can you elaborate on how a large flashing can cause more damage than it
prevents?
Thanks
Jay
Peltz power
Sent from my iPhone
On Aug 7, 2015, at 10:
I've used Lexel before, it's the best clear caulk I've used. I used it
even to repair cracks on plastic lens on concentrating modules. It holds
its clarity for a long time, however I don't know if its approved for
asphalt shingles.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installe
Oh I'm going to risk the wrath of Trojan and others, but I can confirm
issues with the Trojan L16 having premature cell failures within a
couple of years just as you reported. We use the T105 RE and have not
had problems, but stay away from their L16 line. I otherwise do not
know or understan
er
303 505-8760
On 8/12/2015 8:26 PM, Jay wrote:
Hi Ray
Would that be random dead cells?
Jay
Peltz power
Sent from my iPhone
On Aug 12, 2015, at 6:44 PM, Ray Walters wrote:
Oh I'm going to risk the wrath of Trojan and others, but I can confirm issues
with the Trojan L16 having
Solar Way Drive
Hyde Park, VT 05655
802-371-8678 cell
802-888-4917 home
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ray Walters
Sent: Thursday, August 13, 2015 12:38 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Trojan Batterie
What would be nifty, is if the chase was at the angle of the roof, so
that its top edge was level. Then instead of being a trip hazard it
could be a step.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/14/201
HI Esteemed Wrenches:
I am consulting on a system I have never seen, that consists of a 6.7Kw
Enphase roof mounted system, and 2 backup generators. Each generator
has an automatic 200 amp transfer switch to back up its own 200 amp
panel. Both 200 amp panels are fed by a 400 amp service from
lectrician
Solar Design Engineer
303 505-8760
On 8/17/2015 8:36 PM, Jerry Shafer wrote:
I cant see this working well without some battery based inverter
Jerry
On Aug 17, 2015 10:10 AM, "Ray Walters" <mailto:r...@solarray.com>> wrote:
HI Esteemed Wrenches:
I am consul
ke an interesting project.
Good Luck.
On Mon, Aug 17, 2015 at 8:36 PM, Jerry Shafer
mailto:jerrysgarag...@gmail.com>> wrote:
I cant see this working well without some battery based inverter
Jerry
On Aug 17, 2015 10:10 AM, "Ray Walters" mailto:r...@solarray.c
e Radian is nice because it has two AC Input terminals.
Sounds like an interesting project.
Good Luck.
On Mon, Aug 17, 2015 at 8:36 PM, Jerry Shafer
mailto:jerrysgarag...@gmail.com>> wrote:
I cant see this working well without some battery based inverter
Jerry
On Aug 17, 2
and charge controller would stay online to finish the charge. No
wasted energy to dump loads and the customer has more usable power
from the system. This may cost more than going to a dump load though.
Larry
On Aug 20, 2015, at 10:56 PM, Ray Walters <mailto:r...@solarray.com>> wro
here in Hawaii ($4.99 a tube). I have also heard that black zips
or sealant holds up better in the UV light, and my field
experience seems to validate this.
On Tue, Aug 11, 2015 at 5:09 PM, Ray Walters mailto:r...@solarray.com>> wrote:
I've used Lexel before, i
That was exactly the failure I anticipated when using flashings. Tearing
up the shingle to shingle adhesive and pulling those nails out is more
disruptive than the actual attachment itself. I'm going to flash on an
upcoming job for legal/ insurance reasons, but not because its better.
I too ha
Hi Wrenches;
I have an upcoming project to be inspected, ,and having spent too much
time on off grid and out of country work, I'm now playing catch up with
the new 690.12 and 690.71(H) requirements.
The proposed GTB system is 3 Radians with a ground mounted 18kW array
and large HUP battery ban
mp;productCat_ID=39&sortOrder=4&act=p>
(Previous Model Num: MNBCB-1000/50-Battery Combiner)
MidNite 1000amp battery combiner box
Includes a 1000amp Positive and Negative bus bar with 3/8 inch studs.
On Aug 26, 2015, at 3:39 PM, Ray Walters wrote:
Hi Wrenches;
I have an upcoming proj
location of the bird house and locking it would be a quick
solution to the malicious shutting off of a system. FF do carry and do use bolt
cutters.
On Aug 26, 2015, at 7:26 PM, Ray Walters wrote:
I spoke with Phil Undercuffler from Outback, who is a long term respected
member of our list
g off the dc from the array and the ac out of the
inverters solves the problem--keep the battery as close as possible and
don't worry about trying to turn off the battery circuit to the inverter.
Bill.
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wre
Excellent point, sir. I have looked at quite a few from the attic,
later when doing upgrades, and I haven't seen leaks. But NO, I have not
carefully gone back on every install to confirm. No news is good news,
but that still doesn't mean 100% leak free. Also, I'm working in a
drier climate,
WilIiam;
checked out your guards on your website, that looks really clean, but
also like a lot of work and expense. I'm still so surprised
manufacturers are not offering an option like that to their frame systems.
My question: how come you didn't just fence the array? Shading issues
on the
gree with his interpretation.
W
Gradient Cap_mini
Lic 773985
millersolar.com <http://www.millersolar.com/>
805-438-5600
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>] *On Behalf Of *Ray
Walters
*Sent:* Friday,
I would add to your question:
What BOS battery disconnect and combiner are folks using? Outback can
stack but doesn't offer the other gear.
I can share some pics supplied by their Tech support of a 5 Radian setup
using telecom style overhead Buss bars; not sure how many inspectors are
going to
The other option is Midnite Solar's remote controlled breakers or
combiner boxes. They make up to a 250 amp breaker, but I found on large
battery systems that we need some thing larger. Colorado is now
requiring Rapid Disconnect for the batteries as well, which is NOT the
original intent of th
Flown many times with my tools. Batteries are carry on, and all the
rest of the tools need to go in the checked baggage.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 9/28/2015 7:18 PM, Dan Fink wrote:
Esteeme
Contact S Flex in Denver
http://www.sflex.com/htdocs/index.php/us/contact-information
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 10/5/2015 7:37 PM, James Rudolph wrote:
Aloha Wrenches,
Does anybody know where
I agree, many module failures only show up under load. I just use a
clamp on meter while the modules are still wired to the batteries.
The PV150 can capture operating current and power as well, so it should
be able to identify most module fails. I'm just not sure if it can do
this without a lo
have this same issue?
Thanks,
--
Bill Loesch
Solar 1 - Saint Louis Solar
314 631 1094
On 10/5/2015 10:13 PM, Ray Walters wrote:
Contact S Flex in Denver
http://www.sflex.com/htdocs/index.php/us/contact-information
R.Ray Walters
CTO, Solarray, Inc
Greetings All;
I have used DP&W's top of pole racks for 20 years, but I've had my share
of trouble, too.
First the lead times are horrible, sometimes pushing 2 months.
Second, the cost is approaching the cost of the modules, especially for
high wind ratings.
Third, they just can't seem to wai
I agree installing a fuse at the battery bank is a good idea. However
actually doing it right is tough. Putting the class T fuse and holder
in a battery enclosure with flooded cells is going to cause more trouble
than it solves. I've seen class T fuses oozing green goo out the ends,
and the
Wow, I just got back from over seas myself, went through multiple
checks, and have never had a problem with the probes on my meters. I
always carry those on. I mean they're not really worse than a pen,
pencil, paper clip, etc
Or maybe there are some Ninja solar installers that can do some s
Sorry Drake, I don't know what that one is.
These rack questions come up so often on the list, we should create a
data base to ID all the racking systems.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/10/201
Hi All;
It just occurred to me that the new secure power supply model Sunny Boy
TL inverters might be able to charge a battery based inverter through
its regular AC input, and avoid some of the control issues inherent to
regular AC coupled systems. This would allow the secure power output to
HI All;
I just ran across a solar retailer in Colorado claiming to be a "CEC
approved retailer".
Ever heard of that? I looked it up and the Clean Energy Council in
Australia has an CEC approved retailer list, which of course this
company is not on the list.
CEC is also the Consumer Electronic
Even if it works for short term testing, I would imagine long term
issues that would require more frequent equalization, and shorter cycle
life.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 11/18/2015 5:09 PM,
Dellta LA lightning arrestors would not prevent the diode damage you
mentioned. I think many others on the list will confirm that Delta LAs
are not effective at preventing equipment damage, and probably only
useful in preventing complete wire melt down. Midnite found the Delta
didn't start c
We used to just bundle the PV cables and secure them close to the pivot
point at both the rack and the pole with insulated wire loom clamps. We
always made a big enough loop to handle full articulation, but not too
long so they wouldn't catch on the Combiner box, etc. We also started
using b
- 970.626.5253 C - 208.721.7003
"Responsible Technologies for Responsible People since 1988"
*P*Please consider the environment before printing this email.
*From:*RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Ray Walters
*Sent:* Monday, November 30, 201
Basically I would try to save the batteries and sell this guy what he
really needs: a better system.
Obviously there is no LVD, and so this whole sad story of 8 v out of
48v, and frozen electrolyte (more like just water).
He needs a real inverter/ charger and put all his loads on AC or at
least
HI Larry;
I second your suggestion that dealers have a separate, expedited contact
line that reaches someone with a higher level of expertise.
1) We're repeat customers, and their front line sales team.
2) We're not going to call unless its something trickier to figure out.
This has been a long
Anyone heard of or used Discover Batteries?
http://discover-energy.com/products/advanced-tubular-batteries/
They have a sealed lead acid battery that they are claiming 1900 cycles
to 80% DOD.
Sounds amazing, but
They are head quartered in Canada, and I'm having a hard time getting
info on t
9 AM, jay wrote:
HI Ray,
Not really that unique.
Most industrial VRLA are pretty close.
Just a quick check of the Outback site, has their RE version at 1500 cycles at
80%DOD
and OPzV at 1800 cycles.
Unigy, and Absolite 2P are going to right there as well.
jay
peltz power
On Dec 12, 2
We've gotten Rolls clunkers right from the factory with zero volts, and
yes we had to get nasty to get it replaced. They wanted to charge us
shipping under the warranty terms, and I stood my ground: they sold a
hunk of lead, when I paid for a battery. That is not completing the
sales transacti
I think many manufacturers use Refurb parts for repair/ warranty. I had
a cell phone replaced under warranty and the "new" one was not new at all.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/15/2015 7:24 P
Hi Larry and Jay;
I totally agree, that taking into account charge and discharge rates,
DOD, and temperature, we should be able to more accurately model a
battery's lifespan. We already have temp sensors at the battery, so it
seems just a matter of software to do this. Also battery's nonlin
It's also possible to charge just the weak cells using an automotive
charger set to 6 v.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/17/2015 8:29 AM, Luke Christy wrote:
Thanks Guys, for the feedback.
I r
3 505-8760
On 12/18/2015 8:44 AM, Starlight Solar Power Systems wrote:
On Dec 17, 2015, at 11:55 AM, Ray Walters wrote:
...but as far as I can tell, every other storage chemistry has similar
characteristics: lower capacity at low temps, a high temp limit, non-linear
cycle life depending on DOD,
I heard Congress just approved the extension of the 30% tax credit
beyond 2016. Supposedly the rule changed to "begin construction" from
"put into service", but I don't think that takes effect till 2017.
Definitely want a tax pro to look the whole thing over, especially in
light of the new ru
The HUP is a smaller footprint than L16s because it is a taller
battery. We've moded quite a few battery boxes just by raising them and
adding a strip of wood at the bottom.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 50
I think I would put in an eye wash station first, followed by a set of
cable cutters. The one battery fire I experienced was a quick burn of
the hydrogen off of a single cell, lasted a few seconds with very little
heat, and extinguished it self. It was the result of a shorted battery
cable, s
The EZ out is for unscrewing a threaded connection, I've spent a bunch
of time with those only to have the EZ out break off in there too. Then
you've got a real mess of hardened tool steel.
I would first drill several small 1/8" holes in the lead around the
circumference of the bolt. Then,
What I've seen lately in my Spam box, advertised at the usual ridiculous
price, is for low wattage Solarworld modules. We currently are
installing 285 and 290 watt models, and what was being offered were 260
and under. Either they're knock offs, or someone is moving some really
old stock.
Thi
I would use a SS washer with integrated Neoprene rubber gasket. We use
them on roof work, and Unirac uses them under the lag on their roof
flashings.
Image result for neoprene washers
https://www.copperstate.com/shop/429/neoprene-washers
Thanks,
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certifi
plastics is they
don’t compress so you do get a ridged structure.
jay
peltz power
On Jan 28, 2016, at 10:15 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
I would use a SS washer with integrated Neoprene rubber gasket. We
use them on roof work, and Unirac uses them under the lag
Hi All;
We're looking to improve our battery box construction, and are
considering using 1/8" think polypropylene sheeting. I've used small
premade boxes before, but this will be for a HUP install, and we would
want to build the box around the batteries after. Does anyone have
experience/ c
al...@sindelarsolar.com
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder (Retired), Positive Energy, Inc.
*505 780-2738 cell*
**
On 1/28/2016 3:25 PM, Ray Walters wrote:
Hi All;
We're looking to
respirators to Demo a box that was in a dilapidated and
soon to be be razed structure. The general contractor and client stood
by laughing and commented that it looked like a scene from Breaking Bad!
On Jan 28, 2016, at 9:18 PM, Ray Walters <mailto:r...@solarray.com>> wrote:
Thanks fo
That new chart is for a single block, but we would want the M100 or M110
which is 12 of those S30 blocks connected together (580 AH @ 20 hr
rate). I haven't tried them, but I penciled out the ROI and at 3000
cycles they stand up well against other lead acid batteries. 40 v is
low, but I believ
We were called in on a system similar to this, and we ended up just
installing an AC transfer switch. Normally the GT array sold back to
the grid side of the system, but in an extended outage, the customer had
the option to switch the connection to the back up load side (AC coupled)
He was made
What batteries are you using? I've had flooded lead acid batteries have
several mA of current flowing to ground through the acid mist along the
side of the battery. I had the battery bank supposedly isolated but got
a shock and traced the connection to ground to the middle of the battery
pack
Greetings Esteemed Wrenches;
I just received an interesting call from an owner of a late 1990s
vintage GTB system here in Colorado. (Trace SW4048 I'm guessing) The
tenants had disconnected the grid for almost 2 years and lived in the
house off grid. They had also done many scary wiring "upgr
the owners manual
Jeremy Rodriguez
Solar Installation And Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
On Feb 9, 2016, at 12:23 PM, Ray Walters wrote:
Greetings Esteemed Wrenches;
I just received an interesting call
Design Expert
All Solar, Inc.
1463 M St
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
> On Feb 9, 2016, at 12:23 PM, Ray Walters mailto:r...@solarray.com>> wrote:
>
> Greetings Esteemed Wrenches;
>
>
I believe you would still need a battery for the Classic to work properly.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/9/2016 7:07 PM, Dan Fink wrote:
I have an interesting question I haven't run into before,
301 - 400 of 996 matches
Mail list logo
