Mac,
Li-ion batteries are connected the same as any other deep cycle, positive and
negative terminals. The Battery management is done actively on each cell. The
brand that we sell has a CPU that receives serial data from the string of
“sense” boards that are monitoring temperature and voltage
Hi William,
I have designed and installed a few lithium iron battery banks. We now stock
the GBS line and plan to add additional brands soon. My experience is very
positive toward the performance and future of LFP and LFMP as a replacement to
lead acid for off grid, stand-by and mobile use. As
Chris,
I would not touch that with a..….20 foot pole. It will never work right and he
will assign you the blame when he sees his electric bill go down by $1 per
month.
Larry
On Sep 5, 2014, at 9:42 AM, Chris Daum ch...@oasismontana.com wrote:
One killowatt, and three wire. He's been using
Crutcher
Starlight Solar Power Systems
On Aug 20, 2014, at 10:46 PM, Ray Walters r...@solarray.com wrote:
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
Hi Bill,
I’m probably stating the obvious but we always install mobile inverters closest
to the battery due to the high loss at 12 volts, then run AC to the point of
use.
Larry
On Aug 7, 2014, at 7:07 AM, Bill Loesch solar1onl...@charter.net wrote:
Gentlemen:
Does anyone have any
$360/kWh is a good price. Can you share the brand with us or email me off list?
We sell Li-ion (LFMP) at our store but I include a CPU, protection solenoids,
battery capacity meter and video display. My dealer cost is quite a bit higher
than you were quoted.
Larry
On Jul 12, 2014, at 11:42
is our best
selling battery.
Larry Crutcher
Starlight Solar Power Systems
On Jul 2, 2014, at 3:58 PM, RE Ellison reelli...@gmail.com wrote:
What has been everybody’s experience with Full River Batteries?
Bob
___
List sponsored by Redwood Alliance
Hi Drake,
If the Enphase are online, up to 60 amps (30A @ 240V) can be transferred
through the Magnum inverter to loads. The inverter is not providing power to
loads at that time. If the Enphase go offline, the Magnum takes over using
power from the battery. If the load is greater than your
Yes Drake, I stand corrected, I was picturing the micro inverters feeding the
input rather than coupling the output of the Magnum. To your original question,
I think you would have to be consuming more power than the PV array alone can
provide before the Magnum voltage would drop with the pump
surge
current. I would recommend using a stacked pair of 4448’s as a minimum if you
have other house loads.
Larry Crutcher
Starlight Solar Power Systems
On Jul 2, 2014, at 8:17 AM, Drake drake.chamber...@redwoodalliance.org wrote:
Hello Wrenches,
We are hoping to use a Magnum PAE 4448 to back
Hi Roy,
The FullRiver DC400-6 AGM battery can issue 2000 amps for 5 seconds so he
should be fine.
Larry
On Jul 2, 2014, at 12:35 PM, Roy Butler r...@four-winds-energy.com wrote:
I haven't seen anyone mention the battery bank. If I understand correctly,
there's a single string of sealed
L16
I am looking for someone that can repair the SW4024 LCD control. The display is
getting to dim to view.
Thank you,
Larry
___
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address
Hi Dan,
You mentioned that “his grounds didn't work”. Actually, they worked, just in an
undesirable way. One thing to look at is how or whether the house ground system
was bonded to the tower ground. If they were not properly bonded, and with poor
soil condition, the potential difference
started.
We keep the remanufactured units in stock at our store because we see so many
of these. Kyocera will also pay labor to replace them.
Thank you,
Larry Crutcher
Starlight Solar Power Systems
On Jun 11, 2014, at 4:47 PM, Dave d...@independentpowerllc.com wrote:
Wrenches,
I
marco,
We used to stock Panasonic. I first heard about this in February when I tried
to reorder inventory. I was told by a distributor that Panasonic increased the
minimum order. Every one I contacted had no intention of ordering them due to
this new minimum. In contacting Panasonic back in
Hey Kirk,
We have sold sanyo then Panasonic modules for over a decade. Not only were they
highly efficient, they were the last truly high performance modules in the US.
I have exhausted my search for them, only 3 left in stock. Panasonic will not
return my phone calls or emails.
There are
to what Ray
said. Stick with proven, mainstream CC manufacturers. The fact that it is not
an MPPT controller is a major drawback in any system over a few hundred Watts.
Please share with us the operating and customization functions that you are
looking for?
Thank you,
Larry Crutcher
Starlight
Good answer Wayne…how strong AND how far away. I'm sure the inverse-square law
apples here but if you don't know the initial power and distance, it does not
matter much anyway.
Now, for a hilarious interjection, there is a customer in our showroom at this
moment asking about PV solar in case
Hi David,
We have thousands of PV modules installed mostly on RV's. An RV roof can be a
very abusive environment with turbulence, flying debris, driving under limbs,
heavy vibrations and more. I have not had any glass breakage that could not be
accounted for, i.e, breaking for unknown reason.
Mac,
I have a customer with 17kW on 3 Fronius inverters. He connected a cheap 40kW
china diesel generator during a week long power outrage. I was amazed when he
told me they sync'd up with no problems.
Larry
On Apr 16, 2014, at 1:44 PM, Mac Lewis maclew...@gmail.com wrote:
Hello wrenches,
Sorry for reposting but perhaps my original post was missed. Has anyone used
the Zomeworks Cool Cells?
http://www.zomeworks.com/battery-electronic-enclosures/cool-cell/
Thank you,
Larry Crutcher
Starlight Solar Power Systems
On Mar 28, 2014, at 3:14 PM, Larry Crutcher, Starlight Solar
Has anyone successfully installed a Whizbang Jr. battery monitor for the
Midnite Classic yet? I'm having strange trouble with a Classic after firmware
updates and WB install and wonder if others have had trouble.
Thank you,
Larry Crutcher
Starlight Solar Power Systems
Ray,
I have never considered the effect of battery voltage at low temperature under
load, only capacity loss, so you got me thinking. Here's a simple idea: why not
put a battery in a freezer with your expected load and monitor voltage, or
better yet, chart to see where it lands. I would be
….after 7 years.
Wrenches,
Have any of you used the Zomeworks Cool Cell battery enclosures? I would like
to hear about their effectiveness, especially if you have used them in a very
hot, dry climate. What maintenance is required? Zomeworks says on their
website that one location kept the
Hi Benn,
Over the years I have seen several of the DR inverters burn up near the
transfer switch, or perhaps the switch. I've never dug into the chars to
determine what actually failed. I would replace that relic before the
inevitable happens.
Larry Crutcher
Starlight Solar Power Systems
Wrenches,
What high performance PV modules are being sold in the US? I can't find
Panasonic modules anymore. I have written to them twice but they can't direct
me to any distribution in the US. They insist that Sunwize will have them but
Sunwize says they have no plans yet to purchase again.
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry
Crutcher, Starlight Solar Power Systems
Sent: Friday, March 14, 2014 8:34 AM
To: RE-wrenches
Subject: [RE-wrenches] Uni-Solar, Kaneka.now Panasonic?
Wrenches,
What high performance PV modules are being sold in the US? I can't find
Thanks for your reply August. I'm quite surprised that you have two Uni-Solar systems not performing well. Third party testing consistently proved them the top performer. (eg. Santa Cruz and Tucson sites) With my experience both on and off grid, I am convinced. Panasonic was great because, in
It looks like SunPower will only sell direct to authorized dealers. Are there
any SunPower distributors that can sell to non-authorized dealers?
Thank you,
Larry
___
List sponsored by Home Power magazine
List Address:
.
Larry
On Feb 27, 2014, at 7:24 PM, toddc...@finestplanet.com wrote:
not trying to be dumb here, but what's the attraction to lithium ion batteries?
todd
On Thursday, February 27, 2014 3:44pm, Larry Crutcher, Starlight Solar Power
Systems la...@starlightsolar.com said:
Jay,
I'm
, Starlight Solar Power Systems wrote:
Jay,
I'm an authorized dealer of GBS systems and we stock and sell them here in
our retail store. I can build any voltage bank in 12 volt increments. All our
systems include EMS computer, cell level balancing, temperature and SoC
monitoring with over
Perhaps this?
http://www.waytekwire.com/products/1461/Marine-Wire-Cable/--of-Conductors=2
Larry
On Feb 28, 2014, at 5:54 PM, Allan Sindelar al...@positiveenergysolar.com
wrote:
Wrenches,
Simple request, please: who carries 10/2 jacketed submersible cable,
specifically to use with the Shurflo
Jay,
I'm an authorized dealer of GBS systems and we stock and sell them here in our
retail store. I can build any voltage bank in 12 volt increments. All our
systems include EMS computer, cell level balancing, temperature and SoC
monitoring with over/under voltage protection. Basically a
Desperate here….Does anyone know where I can still purchase Panasonic PV
modules? Any quantity.
Thank you,
Larry Crutcher
(928) 342-9103
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re-wrenches.org
Change email
Hi Ron,
I agree and share the frustration. I've been asking Rick at Blues Sky Energy
for a few years to build an IPN network controller that can handle 100 volts
input and 60 amps out. With the IPN Pro, the BSE controllers are the very best
in battery monitoring and terminating charge based on
Jerry,People do like to touch stuff. One of the benefits of the Midnite controllers is you can remove the MNPG after programming and the user can not alter any settings. Some customers need this type of interference. Here's a picture of a thermal runaway in an AGM battery after a customer, while
Ditto Tom, seen this too often in Mexico. I carry a manometer to make check the
pressure at the LP input to the generator with the engine running. Make sure it
is at/above 11 WC when it starts to act up. If the regulator is at the tank,
long vapor runs can cause too much pressure loss.
Larry
only have the 600 watts per day when you are either on shore power
or on a genny can you design the system to not be needed when they are off and
kill that load
Jerry
On Feb 13, 2014 11:51 AM, Larry Crutcher, Starlight Solar Power Systems
la...@starlightsolar.com wrote:
Hi Jerry,
The no-fault
AIC rating also
Jerry
On Feb 11, 2014 4:43 PM, Larry Crutcher, Starlight Solar Power Systems
la...@starlightsolar.com wrote:
Hello Wrenches,
We're preparing to offer Lithium batteries to some of our customers as a
replacement to lead acid in recreational vehicles. RV batteries can have
Hi Allan,
FYI, their data sheet shows cycle life at 50% DoD is 1850 or 5 years. The 20
year life is probably for standby use. I looked at these many years ago but I
have not tried these because of price.
Larry
On Feb 11, 2014, at 9:27 PM, Allan Sindelar al...@positiveenergysolar.com
wrote:
.. but excellent quality. If you're a registered reseller with
Allied, the $ is less.
Dan
On Tue, 2/11/14, Larry Crutcher, Starlight Solar Power Systems
la...@starlightsolar.com wrote:
Subject: [RE-wrenches] DC Solenoid Coil Current
To: RE-wrenches re
Hello William,
There is a hassle factor with the Morningstar MPPT controllers. If you need a
custom charge setting, and I do most of the time, then you must download and
install software, use a RS-232 data cable, and reprogram settings from a Windoz
PC. That's SO 1980's!.
We don't sell many
equipment. And when I get my choice, I go with the Morningstar stuff
because I know it works well.
-James Jarvis
APRS World, LLC
www.aprsworld.com
On 02/12/2014 03:31 PM, Larry Crutcher, Starlight Solar Power Systems wrote:
Hello William,
There is a hassle factor with the Morningstar MPPT
Hello Wrenches,
We're preparing to offer Lithium batteries to some of our customers as a
replacement to lead acid in recreational vehicles. RV batteries can have
multiple charge sources simultaneously so I have worked out protective
circuitry to interface with a EMS computer. To insure
Hi Bruce,
Please explain feeding it properly. Charging any lead acid battery slowly
actually preserves battery life. As long as you are achieving the recommended
charge voltage (temperature compensated) for long enough time, and reaching
100% SoC regularly, you are caring for the battery.
At
Allan,
The primary concern should be the volume of gas discharge if over voltage
occurs. This study helped me understand the risks:
http://www.sonnenschein.org/Gassing.htm
Quote from the study: Gassing according to IEC 896/2-Oct 95 @ 2.3v / cell
within 30 days was measured @ 5mL/cell/ah while
Does anyone know where to still purchase Panasonic modules since Sunwize no
longer carries them?
Larry
On Feb 3, 2014, at 2:28 PM, Kirk Herander k...@vtsolar.com wrote:
Panasonics are longer available through Sunwize. That’s what my rep just told
me. They had trouble selling them due to the
Chris,
We still build MC3 cables here.
Larry
928-342-9103
On Fri, Jan 31, 2014 at 11:01 AM, Chris @ The Oasis i...@oasismontana.com
wrote:
Dear people:
I have a customer with some older Sharp modules, and he's in need of four 35'
PV cables with MC3 connectors. Does anyone have a line on
Hello Jay,
I'm in Yuma, Az where humidity is often under 5% and static discharge is a
severe pain in the….finger. Curious person that I am, I once measured the
distance of a static arc to estimate the voltage being generated from my lamb
skin slippers sliding on carpet. My best guess is it was
Jerry (and Chris),
I can't agree that there is nothing better than FLA batteries. It depends on
may factors. For example, many of our customers are only using their system
seasonally. When away for up to 6 months, an AGM or GEL battery will be far
superior unless you have a knowledgable person
August,
I should have clicked your link first. Those are Unigy batteries and can easily
last 20 years in standby. I would take the time to perform discharge tests on
those. Sorry for any confusion.
Larry
On Jan 6, 2014, at 1:59 PM, August Goers aug...@luminalt.com wrote:
All Battery
Bill,
This sounds like an ideal customer for AGM or GEL batteries. Far more efficient
and no maintenance required. One thing for sure, I would check the programming
of the Trimetric. You can undercharge a battery and never know it if the
configuration is not done properly. Make sure to
Ray,
To question 2: I find Rolls batteries to be outstanding. Our oldest banks are
over ten years now and trouble free. I can say the same about Crown CR-390
batteries if your doing comparisons. Can't say that about Trojan and defiantly
not Deka AGM's (run away!).
The 80% DoD thing is a poor
Does anyone have an extra Sunwize part # 950sw5/10mtassy (Item No. 008064) that
you can part with?
Please reply off list to la...@starlightsolar.com
Thank you,
Larry Crutcher
(928) 342-9103
___
List sponsored by Home Power magazine
List
William,
If your Vmp drop is under 2% (my design goal for maximum acceptable loss) I
can't see any reason why not.
Larry
On Dec 17, 2013, at 3:00 PM, William Miller will...@millersolar.com wrote:
Friends:
I am reworking an existing off-grid system to become a grid-tie with
Brian, We often have customers that don't want to loose programming for their
satellite receiver. To reduce tare loss and the parasitic drain on a large
inverter, we install a 100 Watt dedicated inverter, about $20, to keep the sat
receiver going 24/7. We do the same thing for small
Davis,
If you are using 24 volts, Blue Sky Energy has a remote monitor product as
well, the UCM module. It has ethernet and MODBUS RS-485 built in. With BSE IPN
controllers you can have up to 240 amps charge current, full remote programing
for controllers and monitor the PV solar arrays and
Carl,
Assuming about 400 volts, a 40k ohm resistor from PV negative to ground should
trip the ground fault. Solder up to some test leads, insulate the resistor and
make the short. You'll only be conducting about 2 Watts through the resistor.
Arc fault, on the other hand, can be very complex.
the existing connectors already on the PV).
Separating PV connectors under load will damage the pins and render the
connectors unusable if the metal melts (and it could).
Be careful!
Dan
On Mon, 11/25/13, Larry Crutcher, Starlight Solar Power Systems
Sunwize has 144 in stock in NY. Since the demise of UniSolar, these are now the highest performance PV modules you can buy.
On Nov 21, 2013, at 3:24 PM, Tump t...@swnl.net wrote:Customer is interested in 12 Sanyo / Panasonic modules, who is selling them on the east coast? TiA. Tump
t...@swnl.net
We buy from Waytek Wire, about $0.33 each for stainless.
http://tinyurl.com/k32wwbx
Larry Crutcher
(928) 342-9103
www.starlightsolar.com
la...@starlightsolar.com
Retail Store Warehouse
2998 Shari Ave.
Yuma, Az 85365
USPS Postal Mail Only
11881 S Fortuna Road, #210
Yuma, AZ 85367
On
Wrenches,
I'm looking for commercially produced PV solar powered light systems, the type
that would be used to illuminate a parking lot. I would appreciate any
recommendations or warnings.
Email me directly: la...@starlightsolar.com
Thank you,
Larry Crutcher
Starlight Solar Power Systems
Hilton,
Magnum Energy also has a single 4400 VA model, the MS4448PAE, that operates
120/240 split phase. It can provide 8500 Watts for 5 seconds and 40 amps (line
to line) for 100ms. This might start the 3HP motor load assuming it is 240 volt
induction motor and not a capacitor start. Also
If you can wait, Magnum Energy has a stand alone, power factor corrected
charger coming out. I've been bugging them for a couple years about it.
Otherwise we have sold hundreds of Iota's. A 3 stage charger (with IQ) and
voltage range can be adjusted internally. Not bad for the price.
Larry
Jeremy,
This is often the scenario for many of my customers in Mexico: owners are
absent for 5-8 months. Batteries will last longer if charged slowly at lower
voltages. But, getting a full charge daily with a PV solar resource sometimes
takes longer time than there is sunlight available. For
Weld 'em in a steel frame. Even then, a battery operated cutoff tool will have
the frames open in minutes. Height will really slow them down but make sure
they can't back up a vehicle and pull the array down…...Yes, I have had that
happen.
Larry
On Oct 24, 2013, at 1:37 PM, William
That was one of my thoughts. It must be very advanced control to know when NOT
to use utility power. Of course one could switch off the grid power….but then
how well does it function without it?
Just add a few more sub $1 per watt PV modules, a high efficiency electric
water heater and let the
:11 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
William, Chris, Ray, Allan, et al.
Gen support would be ideal but this inverter setup will be a quad pack of
Magnum 4024PAE (120/240 split; 16kW). Their New MSH inverter is single phase
only and can not be stacked.
While disabling
Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 10/1/2013 11:09 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
You are right. Normally I would not even consider a generator of this size.
My constant thinking outside the box took me down this rabbit trail. I'm back
running the genny through one inverter and putting a transfer switch on the AC out which opens the ac out.Meaning 100% charging but no loads.JaySent from my iPhoneOn Oct 2, 2013, at 9:50 AM, "Larry Crutcher, Starlight Solar Power Systems" la...@starlightsolar.com wrote:Ray,I had tho
inject some different
ideas.
William
-Original Message-
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Larry
Crutcher, Starlight Solar Power Systems
Sent: Monday, September 30, 2013 1:02 PM
To: RE-wrenches
Subject: [RE
to even consider IMHO.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 10/1/2013 8:11 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
William, Chris, Ray, Allan, et al.
Gen support
Eric,
30% of C is high for all flooded batteries I know of. I'd worry about the high
temperatures and grid warping. Some AGM's can handle 5C charge without harm.
Larry
On Oct 1, 2013, at 11:10 AM, eric.bent...@schneider-electric.com wrote:
Hi Guys,
Calling for 30% C for max charge
Wrenches,
I want to use the Ecogen 6kW generator on a large off grid system. The location
has very few overcast or rainy days and the generator will rarely be needed. My
concerns is nuisance tripping the generator output breakers if the household
load exceeds 6kW. The power system control has
It's good to see this response instead of the all to often not our fault
excuse. Any chance they will pay for your time? Shipping?
Larry Crutcher
On Sep 28, 2013, at 7:22 AM, Drake drake.chamber...@redwoodalliance.org wrote:
Chris,
Generac has stated that the Eco Gen will be replaced.
Hi Wrenches,
I've been looking for a distributor for the Generac Ecogen. The ones I
contacted are about $300 higher than paying retail at Lowes. Is there a
supplier that sells wholesale or discounts to dealers?
Off list answer is fine.
Thank you,
Larry Crutcher
la...@starlightsolar.com
Back in the 1980's we used a company called Baird (www.bairdmounts.com) to
engineer NPR mounts for satellite communication antennas. I have used many of
their products for antennas up to 5 meters and never a failure or problem. I
have not used their mounts for PV solar but I expect their
William,
I have a couple customers in a similar situation. The homes are Mexico and they
need to operate mini split A/C for a few months. There is no space for
increasing the PV array. Once the generator run time is balanced to maintain
the batteries between 50% and 80% while also handling any
We install hundreds of RV power systems, as high as $18,000 cost, and tell all
of our customers about the tax credit. Many have reported back that they were
allowed the tax credit. No one has ever told me it was disallowed. Some
customers are full time, some only use the RV occasionally.
Jay,
I saw that comment also. The more hardened lead sulfate becomes, the more
resistant the battery is to the electrochemical process and therefore less
current is drawn from the charge source. This decrease of load allows the
charge voltage to rise more rapidly. This rapid rise is usually a
not end in disaster.
Larry Crutcher
Starlight Solar Power Systems
On Jul 18, 2013, at 1:11 PM, Drake drake.chamber...@redwoodalliance.org
wrote:
Tom,
The batteries usually reach absorb voltage shortly after the sun hits the
array. The reason the bank wasn't working correctly
not end in disaster.
Larry Crutcher
Starlight Solar Power Systems
On Jul 18, 2013, at 1:11 PM, Drake drake.chamber...@redwoodalliance.org wrote:
Tom,
The batteries usually reach absorb voltage shortly after the sun hits the
array. The reason the bank wasn't working correctly is that one cell
Check the dates on the KC-120 module label. If any were manufactured between
January 1999 and December 2002, they either have failed or are likely to do so.
We have been replacing these modules for over 8 years now. There was a
defective solder joint during manufacture.
Kyocera will still
You do not provide the length of time the plates were exposed so any response
is a guess. The result of plate exposure to oxygen is hardening of the
amorphous lead sulfate into sulphate crystals and grid corrosion.
You should just cover the plates with water then fully charge the bank. After
Eric,
You may not be aware but some (not sure, perhaps all) MPPT controllers will
switch to simple PWM mode if there is insufficient differential voltage to
operate the MPPT circuit.
To answer Mac's question, no, there is no good method to use a 60 cell module
to charge a 24 volt bank,
All MPPT controllers I know of all need battery voltage to operate.
Larry Crutcher
On Jun 5, 2013, at 9:30 PM, toddc...@finestplanet.com wrote:
ok wrenches... here is a hair brained idea i came up with.
i have this customer with the grundfos pump being powered, array direct by 10
Fellow Wrenches,
I realize that many of you are offering your time and comments in a genuine
effort to help Ron, however, the problem he described is the EXACT behavior of
all early 3024i controllers. This happened with overloaded controllers
operating in 24 to 12 downconversion, just like in
Solar Power Systems
la...@starlightsolar.com wrote:
From: Larry Crutcher, Starlight Solar Power Systems la...@starlightsolar.com
Subject: Re: [RE-wrenches] not sure what's going on here
To: RE-wrenches re-wrenches@lists.re-wrenches.org
Date: Sunday, May 12, 2013, 9:30 AM
Fellow Wrenches,
I
Hi Ron,
The problem you describe is due to the firmware in very early versions of the
3024i. What would happen is once you hit the 30 amp current limiter, the
controller will switch the input to act like it is connected to a nominal 12
volt module, lowering the input voltage. Contact Blue Sky
reporting
this. Hmmm?….motivated by public bitching?
Larry
On May 7, 2013, at 1:21 PM, Larry Crutcher, Starlight Solar Power Systems
la...@starlightsolar.com wrote:
Bob-O,
Fronius is not good for reimbursement anymore. While they used to be, Fronius
has refused to pay for warranty service
this inverter has had a problem. Fronius….no more
sold by me.
Larry Crutcher
Starlight Solar Power Systems
On May 7, 2013, at 12:14 PM, Bob-O Schultze bo...@electronconnection.com
wrote:
Jason,
I'm one of the many installers who still won't touch a micro yet. It's not so
much that there were
David,
Since a PV module is a constant current device, I don't believe this will take
place. For a given amount of light (plus all factors affecting power), the
current potential will be there. What force can act upon the current to reduce
it? Consequently, the lowest Vmp the inverter can
, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 4/29/2013 9:44 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
David,
Since a PV module is a constant current device, I don't believe this will
take place. For a given amount of light
unstable, leading to unpredictable inverter operation, and
possible
damage/failure in the power system. Disconnecting the capacitor with the load
alleviate this possibility.
Regards to all...
Dan Lepinski
--- On Wed, 4/17/13, Larry Crutcher, Starlight Solar Power Systems
la...@starlightsolar.com
.
Manufacturer data sheets are not real clear. Who makes micro-inverters suitable
for this? I know Enphase does not.
Thank you,
Larry Crutcher
Starlight Solar Power Systems
___
List sponsored by Home Power magazine
List Address: RE-wrenches@lists.re
stage
is called absorption stage. So I suppose we could call the two stages Bulk and
Absorb/Float.
Larry Crutcher
Starlight Solar Power Systems
On Apr 11, 2013, at 9:43 AM, m...@hurshtown.com wrote:
I see what you mean by no float/3rd stage. Indeed the MPPT500 just tapers off
the amps once
conductor size?
I found one rule of thumb that says doubling like conductors creates a AWG
decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?
Thank you,
Larry Crutcher
Starlight Solar Power Systems
___
List sponsored by Home
.
Larry Crutcher
Starlight Solar Power Systems
On Apr 4, 2013, at 10:20 AM, Nathan Stumpff wrote:
Larry,
I don’t think the relationship of AWG size to ampacity is a linear curve, so
while that “rule of thumb” may be pretty good, you can’t always count on it. I
would use the circular area column
for the small cost savings. Of
course, I say this about any other manufacturer of poor quality
batteries./opinion
Larry Crutcher
Starlight Solar Power Systems
On Mar 15, 2013, at 2:57 PM, Allan Sindelar wrote:
Lou,
There is nothing in your message that definitively tells me that you have
order, weeks of waiting with drop
ship fees.
1. Will anything else work?
2. Does anyone have a part #/specification for the sensor device?
Thank you,
Larry Crutcher
Starlight Solar Power Systems
___
List sponsored by Home Power magazine
List
1 - 100 of 261 matches
Mail list logo
