Hi Glenn;
How do you and the roofers deal with Propanel steel roofs? That's
hundreds of penetrations for the screws, with no flashings, and
they depend on just a little rubber gasket. Or how about the lead
head nails on a corrugated metal roof? Roofers t
Funny the timing of the Wrenches list, just Saturday I added some
Enphase inverters to an existing GTB Outback system. The Enphase are
not AC coupled to the Outbacks, as I didn't want to get into the battery
charging issues, and the customer has plenty of PV relative to the
battery size. Howe
On 4/16/2014 9:52 AM, d...@energysolarnow.com wrote:
As Ray Walters wrote, L feet installed with the correct sealant have
lasted as long as the comp roofs they're
on.
As can be seen in the attached pictures of L-feet on a roof that I
will soon be repairing, the wrong sealant eventually s
HI All;
Anyone have any experience with Franklin Electric's new Subdrive
SolarPAK submersible pumps?
They're showing 1.5 and 3 Hp options. Its a 3 phase motor powered by
an above ground VSD type controller that allows for array direct
pumping. This particular project needs about 10,000 GPD
The bottom corner modules are the likeliest to be damaged by somebody or
something moving past the array. I'd check for any damage on the edge of
the frame. I had kids run a vehicle into a pole mounted array once. No
one would cop to it, but I found the matching damage on the roll cage of
the
Charge controller failure = system failure = customer sitting in the
dark off grid.
I would only use proven, UL listed equipment. Those are ridiculous
current ratings. You would need to wire that with 500 MCM cable.
If you look, you'll notice reputable brands like Midnite Solar, Outback,
and B
Interesting so does "require a tool" include taking a screw off the
cover plate of the combiner box, too?
What a game changer. I'm going to Mexico for my next project; I'll
actually enjoy even more being the sole AHJ on the project.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installe
This may apply to the other string on using photos, etc. but I hereby
grant full rights to all registered users of the wrenches list to use
any of my posted photos for educational purposes.
I was trying to figure out the DC wiring myself. Its possible there is
a homemade bussbar connected betw
secured
by removable fasteners and connected by a flexible
wiring system.
This is not a change. Please help me understand the concern.
Bill Brooks.
*From:*re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Ray
Walters
*Sent:* Monday,
Hi All;
In order to avoid any of my work showing up in someone's slideshow of
horrors, I'm trying to find the correct way to wire 3 Sunny Islands with
Cobra X flex cable.
While it doesn't actually mention it in the SMA manual, a call to SMA
tech support confirmed my suspicions: the DC lugs in
e with ferrules)
Jay
Peltz power
On Apr 29, 2014, at 10:48 PM, Ray Walters wrote:
Hi All;
In order to avoid any of my work showing up in someone's slideshow of horrors,
I'm trying to find the correct way to wire 3 Sunny Islands with Cobra X flex
cable.
While it doesn't actuall
er BOS box comes with arctic ultra flex wire with
ferrules)
Jay
Peltz power
On Apr 29, 2014, at 10:48 PM, Ray Walters wrote:
Hi All;
In order to avoid any of my work showing up in someone's slideshow of
horrors, I'm trying to find the correct way to wire 3 Sunny Islands with
Cobra
aster Electrician
Solar Design Engineer
303 505-8760
On 4/30/2014 12:25 PM, William Miller wrote:
Ray:
Thanks for sharing the research. If you could forward to me of-line an
email contact and part number I need to order for 4/0.
Miller Solar
On Apr 30, 2014, at 10:22 AM, Ray Walters <
r
On Apr 30, 2014, at 10:22 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
What I'm finding in my research is that most of the manufacturers
are just not keeping up with this requirement, meanwhile the use of
fine stranded cable is increasing dramatically.
ILSCO, BURNDY,
Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/30/2014 1:29 PM, Phil Forest wrote:
We use ferrules for fine stranded wire at terminals.
Www.ferrulesdirect has it all.
Phil Forest
South Mountain Company
On Apr 30, 2014, at 3:17 PM, Ray Walters <mailto:r...@solarra
I've used Solamotor Jack pumps for that application. Excellent product
with good support.
http://www.solamotor.com/
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 5/6/2014 6:07 PM, All Solar, Inc. wrote:
Hi all
I agree with Bob-O, no torque arrestor is needed. We've hung small
submersibles in hand dug wells 5 ft in diameter. You can actually hang
several pumps, as long as you keep them from knocking into each other on
installation. The pump does not move around like you might think,
something is w
Funny, I'm working on one of those right now. We're pulling it all out
and putting in Outback inverters.
Those were legal to grid tie in the day, but they're at least 10 years
behind on complying with UL 1741. No way you could use it in a new
system. They were also really inefficient in GT mo
I agree that Voc doesn't seem to degrade as much. I've had a chance to
measure several modules over 20 years old, and the Voc is only dropping
about 1/2 the rate suggested by others here. I think a more
appropriate number might be 0.25% V drop/ year.
R.Ray Walters
CTO, Solarray, Inc
Nabcep
The sooner you get started, the easier it is to get off. The paint is
still curing and hardening. Paint doesn't stick well to glass, so
probably mild soap and water ( manufacturer approved) and a nylon
scrubby pad will cure the problem.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV
Woofenden wrote:
Thanks all! We're working on getting in touch with someone from the
module manufacturer who can tell us something substantive before
proceeding.
Best,
Louis
On 6/4/14, 11:33 AM, Ray Walters wrote:
The sooner you get started, the easier it is to get off. The paint
is still c
rands. Is this a possible solution?
Thanks Ray for bringing up a question I forgot to consider.
William
Miller Solar
On Apr 29, 2014, at 10:48 PM, Ray Walters wrote:
Hi All;
In order to avoid any of my work showing up in someone's slideshow of horrors,
I'm trying to find the corr
The Franklin SolarPak uses a standard AC motor and pump down hole, and a
special inverter/ controller above ground for array direct operation.
The pump is 3 phase though. You didn't mention phase, but I'm guessing
yours is not 3 phase.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Insta
As noted in the previous case, the shattered module is on the bottom
corner. Those are the most vulnerable to damage from animals, kids,
vehicles, etc. The tempered glass always shatters as you described,
when enough force is applied. Look very closely for some slight bending
of the frame w
I just came back from a call back on a system we did last year. Problem?
Bad wire nut connection on the AC side. It it was a pump, so it took
several amps.
I still agree with August though, its not the wire nut; its not doing
the connection right.
This particular connection did not have enough
I've had butt splices fail, due to a ratchet release type crimper that
didn't pinch the wires tight enough.
I now use a good old Klein crimper that puts a big indent on one side.
The problem with this however, is that it damages the built in
insulation. My favorite butt splice is uninsulated,
I also quit doing split bolts, after I had one on an array that wasn't
tightened enough, and it got hot melted the tape. I found it looking
for a 3 v drop.
Not only are they hard and time consuming to tape, you can't check them
later either for voltage or tightness. I've use both the piercing
Butyl tape is what we used for decades on rain catch systems.Check
with the Earth ship folks at Greater World, they're all over the details
on rain catch systems.
http://earthship.com/community
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar
Based on many successful installs, I'd say a 3/4 HP pump is not a
problem at all, and that the Magnum could easily run a 1-1/2 HP
submersible pump.
2 HP probably, but that's where you start worrying.
The Franklin Subpak controller can be used on regular AC pumps and not
only offers constant pre
A 60 amp continuously rated AC breaker is what is actually being used in
the UL listed E Panel from Midnite.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 7/3/2014 9:01 PM, Brian Teitelbaum wrote:
Mac,
Be car
I took an 8 hr Arc Flash Hazard Analysis Training course from HP&P
Safety here in Colorado.
I'm sure there are quite a few places that offer this. Its a standard
course.
Basically after you watch enough video of folks getting blown up, you
start rethinking your approach to opening any live boxe
HUPs are 6 individual cells in a heavy steel case. The individual cells
can be removed without welding lead, and they have a warranty of10
years, 2100 cycles to 80% DOD.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-87
I All,
I'm sorry I was unclear on my question.
I am looking for individual steel cased 2v industrial batteries, not 12v or 24v
packs.
thanks
jay
ps thanks chris.
On Jul 11, 2014, at 4:13 PM, Ray Walters wrote:
HUPs are 6 individual cells in a heavy steel case. The individual cells can b
I put the batteries into a 30 " deep ground vault when possible. Earth
temperature is much more stable.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 7/12/2014 7:13 AM, jay peltz wrote:
Hi all
Yes good points
Everyone is on point with this. This is probably the more dangerous
work I've ever done. You need a truck with a good winch too, along with
pulleys and attachment gear.
The gin pole is probably there; it usually isn't removed.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Li
Is it possible that the inverters are raising line voltage high enough
to make the UPS respond by clicking, but not high enough to have them
actually trip? I'm not familiar enough with UPS control structure, but
it might run a quick test (the click) when the voltage gets close to its
high volt
Midnite makes several good things for this situation, including their E
Panel for the Radian, which I'm sure is better than Outback's version.
They also have low cost AC bypass switch assemblies, and I've recently
used their PV Combiner boxes for AC distribution with AC rated DIN rail
mountable
I'd second that. Let somebody with a 12 v system play with the pair of
gray ones.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 8/15/2014 5:19 PM, m...@hurshtown.com wrote:
I would send them back. If used, I w
The same PWM control used on charge controllers is also used on electric
vehicles for DC motors. We've done many different ones and different
voltages and sizes.
Something like this might work:
http://www.electricscooterparts.com/speedcontrollers24volt.html
R.Ray Walters
CTO, Solarray, Inc
Nabc
Greetings fellow Wrenches;
I have a customer that just purchased some Sunpower E20 -435 modules
somehow from Ebay, and wants me to design a backup power system for him.
This system would be battery based and not be grid tied. SO the
question is: has Sunpower put to rest the positive grounding
sts.re-wrenches.org] On Behalf
Of Ray Walters
Sent: Thursday, August 21, 2014 12:47 AM
To: RE-wrenches
Subject: [RE-wrenches] Sunpower off grid?
Greetings fellow Wrenches;
I have a customer that just purchased some Sunpower E20 -435 modules somehow
from Ebay, and wants me to design a backup pow
grid customers in Mexico that want cheap but high performance PV
solar power.
That’s all...
Larry Crutcher
Starlight Solar Power Systems
On Aug 20, 2014, at 10:46 PM, Ray Walters wrote:
Greetings fellow Wrenches;
I have a customer that just purchased some Sunpower E20 -435 modules somehow
from
Most combiner boxes, DC rated breakers, and DC rated fuses and fuse
holders we use today, qualify as assemblies for the 100% exception
(Outback, Midnite, etc.) so you only have to size the OCP by 125% of
short circuit current rating for edge of cloud effects.
Since the conductor is sized bas
oint of this exception is
to allow cost savings by allow assemblies and OCP devices with lower
ratings. The exception does not apply to every element of the circuit
(the conductors) but only to the 100% rated assemblies and OCP
themselves.
What am I missing?
Thanks,
Mark
On 8/22/2014 6:14 P
Th one factor I don't think any of us have enough info on yet is the
reduced lifespan of the inverter. Heat kills electronics, and an
inverter that is running at max capacity more of the time will be
running hotter. The MTBF (mean time between failures) is only going to
get worse at higher hea
So this would make sense that this Rapid Shut down provision would cover
all generator backup systems too, not just solar.
Considering auto start backup generators have been around for many
decades, I have a few questions:
1) Does NEC 2014 require Rapid shutdown for all generator systems, or is
I've done patch jobs on little 12 v systems, and had them hold up for
many years, but I concur, I wouldn't try that at higher PV voltages.
Silicon sealant actually is slightly conductive, at least according to
other Wrenches when this subject came up several years back.
R.Ray Walters
CTO, Sol
Dang, I was just shifting my off grid projects over to predominantly
Magnum...
First Trace went to the darkside with Xantrex, then Outback started
hiring "no experience necessary" tech support personnel, and now Magnum
gets gobbled up.
Where is an aging off grid installer to turn to? Start
While I'm proud that our country has strived to protect worker's rights
with Unions, OSHA, Worker's Comp, and minimum wage, the reality is that
small employers like my business are faced with an ever rising hurdle to
actually "create jobs". It IS much easier to buy a gadget, tool, etc.,
or su
We've also added a tractor type turnbuckle to the DPW racks that allows
the tilt adjust without taking loose the array.
As others noted, the Top of Pole mounts are usually center balanced, so
the tilt adjust is fairly easy, but wind can certainly grab the array
while its loose, and cause trouble
I think if we started over fresh with our lead acid battery system
designs, we would find we should have the same Battery management system
requirements that you have mentioned. Those are all problems that
plague lead acid as well.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installe
Sounds like you are driving it too far to the East. You may need to
rotate the tracker on the pole towards the east, and then reset the
limit switches.
Also, don't have the limits more than 180 degrees total, or you start
asking for trouble. It can try to do the morning reset back around to
t
I agree with Kurt: you need a licensed plumber in your area to advise
you, if you're trying to keep the AHJs happy .
2nd, I'm very sure you don't want an exhaust/ combustion type vent
under the array. I've had several over the years, and seen some arrays
installed over them. They can get fair
Definitely could use some clarification. The 690 definition of an array
says "mechanically integrated", which sort of implies each roof plane is
its own array.
However in terms of actual PV design terminology, each PV system has
only one array which may consist of many subarrays. Even a 25 MW p
The 2nd problem with the Envoy besides cost is that it isn't always
reliable.Communication through power lines is not a new or fresh
idea, and has Always been problematic. Once you install something you
are expected to make it work, and that can be a nightmare on say an 8
module system tha
Hi Dan;
I, like Larry, must be amazingly lucky then, because we've solved power
quality issues for many years with 50mf caps. Usually, its been front
loading washers not running on Trace SW inverters, but also Grundfos CP
pumps, too. Never had a problem, and some of these have been running
The Outback is not a perfect Sinewave. It still has tiny steps in the
wave, and when electronics have a problem, its usually with the wave
form as it crosses zero voltage . Instead of being instantaneous, it
has a few milliseconds of time the wave is at the zero crossing, which
can drive some
k with another model and/or brand.
Dan
------------
On Tue, 10/21/14, Ray Walters wrote:
Subject: Re: [RE-wrenches] Mitsubishi Mini Split fighting with Outback VFX
Off Grid
To: "RE-wrenches"
Date: Tuesday, October 21, 2014, 12:23 PM
The Outback is not a perfect Sinewave. It still has ti
I've not done a side by side comparison, but the Pathfinder seems to be
slightly conservative, especially depending on which latitude sheet you
are using. I sometimes switch sheets and try both, when the latitude is
close to falling between (ie 37 deg, and there is 37 to 43 sheet or a 31
to 37
That's an interesting idea, but all the failed designs they illustrate
don't show the way we usually do it. We don't even bother with an
inlet, as most battery boxes have enough gap around the door to provide
intake air, then the exhaust comes off the top with several feet of rise
to prevent b
That's why we usually have the batteries in a garage, basement, or out
building that is not open to the living space.
I've seen some cases of very well sealed and insulated enclosures
allowing batteries to over heat, and also build up a lot of acid damaged
connections.
Boxes I've seen with more
Have you tried it without the balancing transformer? You described that
the voltage waveform looked good, but the current waveform had
distortion. I would take the X 240 out of the system, and see what
happens. I hardly ever use the balancing transformers, and I never let
the inverters go in
I agree with Jerry; I quit trying to be an appliance salesman in the
90s. Just go Energy star and add more panels and batteries. The damn
inverters no load draw is actually one of the bigger problems; a pair of
Outbacks is about equal to a full size fridge.
R.Ray Walters
CTO, Solarray, Inc
I don't believe the aux is PWM. It should be a straight 12 v 200 mA
output as I recall. Its just enough to run a battery fan, or a 12 v
relay. You shouldn't need anything else. Being current limited, it
doesn't even need a fuse.
Also you need to run both leads (pos and neg) from the aux outp
What you want is already programmed into the inverter. It's called Low
Battery Transfer mode (LBX), its just a program setting on the
inverter. You select this mode in Menu 9, and then its actual battery
voltage settings are in Menu 16.
It will not sell back in this mode, but fromHome Power Ma
I've never seen an inverter not disconnect on low voltage. My
understanding is that they just can't operate below a certain threshold.
However, I have seen behavior as described caused by DC loads that did
not have a LVD in place. Were there any other DC connections to the
battery bank besides
When I had batteries reverse polarity they quickly turned around but
never had their capacity after.
2nd, that is a clear indication of a DC drain that can kept draining all
the way to zero. The strongest batteries keep giving voltage, while
weaker batteries give all they have and become resist
I have only seen this in cases with DC loads and no LVD. Inverter
systems without DC loads would never exhibit this behavior, unless there
was a short in the battery cabling or bad cells.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design E
For small projects like that with sealed batteries, I just use a 12x12 x
6 NEMA 3R box. I build a little 1" foam board box around the battery.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 12/23/2014 3:11 AM, To
We just always use 4/0 X flex cable with a 250 amp breaker, and call it
good. (2/0 with a 175 A breaker)
If you want to make life really hard, you can look at the trip curve of
the breaker (Heinnemans have 3 different trip curves depending on the
model I believe) and then do all the normal NEC
Some other things: If you keep the conduit less than 24" long, which is
recommended anyway for main battery connections, the conduit fill
requirements don't apply. (see exception: 310.15(B)3a2)
Using table 310.15(B)16 yeilds 230 amps for 4/0 at 75 C. Then 240.6
lists 250 amp as the next standa
The Magnums do not have relays available like the old SWs, but you can
run a Zephyr directly from either a Outback FM controller or a Midnite
Classic. Both have a controlled 200 mA, 12 output. I've had occasional
trouble running the Zephyr because as weird as this sounds: the fan can
have a s
Interesting but the price puts higher than a Zephyr and a Solar
Converters Simple Switch, which is about the same thing with a backdraft
preventer.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 1/8/2015 5:39 PM
I prefer climbing gear as its much lighter weight and doesn't drag you
around. I actually think in some cases that traditional fall protection
gear can be more of a tripping hazard than the safety it provides.
However, I was previously under the impression that if OSHA (or in the
islands: HI
rovide that.
William
On Jan 17, 2015, at 11:00 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
I prefer climbing gear as its much lighter weight and doesn't drag
you around. I actually think in some cases that traditional fall
protection gear can be more of a tripping haz
Try Mouser electronics. Otherwise, I'd consider bypassing it, and have
a regular breaker (30 or 40 amp) on theout put.
The tripping was probably because the breaker was malfunctioning.
Usually the SWs will trip their on board computer to shutdown for over
current, and the breaker should never b
Hi Allan;
You didn't mention the DC load center used, but that would effect the
decision, as well as the relative wall space. I've found customers were
very happy with an E Panel setup, as they gained floor/ wall space with
the upgrade as well. I'm tired of still working in old Trace DC 250
Solar is just one tiny little issue that fire fighters have to face.
There's no placard for 5 gal propane bottles stored in the basement.
I'm glad we're looking to make firefighters safer, but this has really
gotten a bit out of control.
Whatever is planned for 2017, I hope there are some sensibl
I haven't used that type, because that type of die doesn't work well
with the thin battery lugs we use for off grid battery cables. Seems
better for the heavy cast lugs.
I currently have a type that makes a crimp similar to the hammer type
crimpers: an indentation on one side and V on the other
Hi William;
Yes I'm getting too old to let manufacturers off the hook anymore. They
just don't pay me enough (wink, maybe if I ever was compensated for
service calls?)
Unfortunately I have had the exact same experience with SMA's phone tech
support. I was having setup issues that were not co
We looked into this recently as well, and didn't find any good options
that didn't involve us making a custom gizmo of some type. The closest
off the shelf product I found was just an AC smoke alarm that chirps
when it loses AC. I think some of the little UPS boxes also have an
alarm when th
I know we beat this earlier on the thread, but I had similar problems
with SW inverters back in the day, that were fixed with a 50 mF cap.
Reread that whole throead as there were definitely potential problems
associated with that fix, but we found it worked fine, and never had any
other issues
Where do you get the Solarworld small modules from? I haven't seen
those in a very long time.
AEE is carrying Dasol 12 v modules, from 20 w up to 135 w.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 2/24/2015 1
I think the jet tub is the better way to go for off grid. You are only
heating the water and running the circ pumps a few hours/ week, and as
Bill mentioned: no chemicals.
I've tried all of the choices, and while hot water alone is nice, having
the massage bubblers is definitely better. Not ha
abcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/3/2015 4:33 PM, William Miller wrote:
Ray:
Nothing is more civilized than heated flush water!
William
On Mar 3, 2015, at 10:30 AM, Ray Walters <mailto:r...@solarray.com>> wrote:
I thi
I recall seeing simple cardboard box models being demonstrated by NMSEA
at Solar Fest. They would get to about 275 F, while their huge trailer
mounted mirror device got to about 325F, as I recall. The main flaw in
all solar cookers is no backup source of heat, so that if it gets
cloudy, etc.
Hi Larry,
I think you hit on the best load already: water heater elements rated
for 120 v. We have also used dump loads for wind turbines like the air
heating elements from Bergey, but they are only about 1 kW each.
Another possible source are the resistor banks for old golf carts
(before t
to do some
welding.
Thank you,
Larry Crutcher
Starlight Solar Power Systems
On 3/17/15 11:59 AM, Ray Walters wrote:
Hi Larry,
I think you hit on the best load already: water heater elements rated
for 120 v. We have also used dump loads for wind turbines like the
air heating elements from Bergey
Hi James;
So couldn't Larry weld in rigid conduit fittings? Aren't they NPSM, or
do I have that wrong? I suppose the Zinc plating would make a messier
weld and possibly be poisonous
Also to Chris Mason, I was not aware that load banks were available for
rent. That sounds like a good op
Hi Kevin;
I have both a comment and a question:
Comment) I thought that while charging, the AC loads were simply powered
directly by the generator, and the inverters were operating strictly as
chargers. My experience is that it is almost always an issue of poor
waveform regulation with the g
I'm sure somebody more knowledgable already mentioned this, but back in
the last century, when wiring up C40 charge controllers for micro hydro,
they were wired between the battery and the dump load, not between the
hydro unit and the batteries. Basically the turbine ran fully loaded
all the t
were immediately and permanently solved by replacing the
inverter with another brand.
It certainly jaded my opinion of Outback as we had to replace several systems
at our cost.
Kevin
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]On
Behalf Of Ray
etter capacity. Can't
think of a single issue where Magnums exhibited any of the same problems.
Replaced inverters, problem solved and then moved onto other tasks.
Kevin
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]On
Behalf Of Ray Walters
S
What's the reasoning behind two different battery banks at different
voltages? What is the other equipment involved: batteries type, age,
inverters, etc.?
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/24/2015
48v setup with dual outback inverters and dual SB3048 CCs. Lead
acid batteries as well. 3 years old
I've never had this come up in 16 years!
Jeremy Rodriguez
All Solar, Inc.
1463 M
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand!
On Mar 24, 2015,
Also, the Frigidaire washer is really delicate; I had one cooking
controls every year as described, and it was On Grid. The solution
there was to put it on an Outback backup power supply, as the grid was
often out of voltage specs.
Another thing I saw once with the SW inverters is they can par
This has been an issue on some of our systems, but strangely not most of
them. I have not figured out a correlation yet. We have dozens of pole
mount and roof systems that shed snow as soon as the sun comes out, and
then some that ice up and are a real mess all winter. The only
difference I
We have used the underlayment material to line battery boxes. Turns out
it gets eaten by the acid too, not recommended. Really the best product
I've ever used is just the heavy plastic sheeting to line the inside of
the box. I had batteries crack and leak acid almost 2 inches deep, and
the
Acid will eat spray on bed liner too
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 3/30/2015 10:36 AM, Benn Kilburn wrote:
Hi Bill,
Think "spray-on". Build your box then spray on the liner.
Have you seen "spray
I used an Ecogen recently, and I liked many aspects of it. However the
continuous draw of the on board electronics is just ridiculous for an
off grid generator.
A 15 w solar module charging the start battery was barely able to keep
up with the draw. Running AC off the inverter to the generator
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