Do you know the transformer impedance?
On Fri, Apr 26, 2024, 5:54 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi all.
>
> Anyone know what the tare loss and efficiency is of a 75 kw transformer?
> And it would be run mostly at 1-10kw max.
>
> This one specifically.
>
Hi Jay I have gotten this type of information directly from Hammond, I
would think from transformer to House line loss should be considered. From
my Experiance, people go to 400 amp services mostly for circuit count. I
have measured a few transformers in past but I don't know where data is
now.
I agree with John also. one of the better-performing off-grid houses I
worked on used a 48 to 12-V Samlex converter. The 12-volt thick-walled
refrigerator was about 4 amps at 12 volts. The lights, radio, and small TV
drew very few amps each/ I also used an Outback 3648 inverter, which the
If the batteries have a 10-year life, I don't think it would make much
difference. LA batteries show an increase in internal resistance after a
few recharges. Typically, the BMS in a Li battery will ensure at top
balance all cells balance, If the batteries are being properly recharged.
On Tue,
I have done it many times. YES terminate the secondary first. As an older
CT is a step up the voltage transformer and can generate thousands of
volts. Many of new type Cats are low voltage output and are safe to work
with.
On Fri, Mar 8, 2024, 10:46 AM Jerry Shafer via RE-wrenches <
I used to be Lead AGM for Off-grid; I used the Pure Lead Thin Plate for an
install 4 years ago from AltE, and it is still working fine. I believe the
LiFe is the battery for off-grid and the trick is to find the correct BMS,
On Sat, Feb 17, 2024 at 11:43 AM Drake Chamberlin via RE-wrenches <
Is it similar to my problem with my Simplify batteries? Over time, the BMS
did not allow all cells to charge the same. To correct this, I had to
charge each battery separately, and after this, they stayed equivalent for
more years.
On Thu, Feb 15, 2024 at 7:50 AM Jay via RE-wrenches <
Advice, please; I was about to purchase a SunPower inverter. Have other
people been having problems?
I cannot reach their support line with my questions. As many of you know, I
am a small contractor. I have noticed a reluctance of solar equipment
suppliers, both Outback and Sol-Ark, who have
About 4 years ago I wrote about my failure of Simplify in service 3 years.
after much delay, I took each unit to shop and charged each one on bench
power supply, all returned to full function and are still working today off
grid system. I agree with the comments they are tricky, MorningStar knows
I had a some way similar experience I used fire raptor and added a relay to
use Raptor signal to shutdown inverter.
On Mon, Jan 1, 2024, 2:01 PM Mac Lewis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hello Wrenches,
>
> I need to retrofit a Schneider XW+ system with a rapid
Great site, Allan, but many facts still need to be included. Was there a
discharge or charge going on? How much power was being drawn by the
heaters? If this is for a standalone system, energy consumption is very
important. What is the lower temperature cell discharge limit of Blue
Planet?
You have had many good suggestions but note you are on border line power,
at 2200 teet your power is down 10% note gen's are 80% of name plate, and
you are asking for 7.2 kW from a Genny that with atmospheric correction is
7.2 kW
On Fri, Oct 27, 2023, 8:27 AM Amos Post via RE-wrenches <
I have off grid customers where I have them install 1/2 HP pump, also
Franklin soft start seems to help, low cost but I do not know how it works,
it has a start capacitor I think.
On Wed, Oct 11, 2023, 1:23 PM James Jarvis via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> On Wed, Oct
Generators are load responsive. They can not be back feed, one approach is
to take heavy loads and have the inverter drop these loading heav load
situations. bring these loads on line with a PLC
On Mon, Sep 25, 2023 at 11:22 AM Chris Daum via RE-wrenches <
re-wrenches@lists.re-wrenches.org>
sorry for a dumb question but what is the voltage ranges of the Franklin?
On Thu, Sep 14, 2023 at 4:26 PM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Enphase does generator support as well. Fortunately, I do not need that,
> so maybe it opens up my options.
ave Angelini Offgrid Solar
>> "we go where powerlines don't"
>><http://members.sti.net/offgridsolar/>https://offgridsolar1.com/
>> <https://offgridsolar1.com/> <http://members.sti.net/offgridsolar/>
>> e-mail offgridso...@sti.net
>
New washing machines are small loads 400 Watts about.
On Fri, Sep 8, 2023, 2:27 PM Darryl Thayer wrote:
> I once used a ferro-resonant transformer to clean up a sine wave. You
> have to know the power.
>
> On Fri, Sep 8, 2023, 1:59 PM Chris Daum via RE-wrenches <
> re
I once used a ferro-resonant transformer to clean up a sine wave. You have
to know the power.
On Fri, Sep 8, 2023, 1:59 PM Chris Daum via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi folks:
>
>
>
> I have a fellow with a Trace SW5548, purchased from us in 2001. It’s
> been
I agree wit most of the comments. I have tested many VAWT none were any
good.
i had presented my study at the MIdwest Energy Fair, showing much higher
trust on the turbine's and much lower
performance. I just wanted to let you know that sume no performance at
all.
On Fri, Aug 18, 2023 at
I need clarification; however, here is my interpretation for you.
The utility feeds the meter and then the 100A breaker.
Then you want this 100A breaker to feed the 220A bus panel.
This 220A panel then supplies through a 100A breaker the house load.
The solar also feeds the 220A panel. If the
I have seen such equipment from generator suppliers, they will be reversing
contactors, Look for reversing disconnecting switches I have used them
from SQ D and Eaton, and GE.
On Wed, Jul 26, 2023 at 5:26 PM Mick Abraham via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi,
How about a Morningstar relay driver? I have not done this exact thing
before.but similar things.
On Thu, Jul 20, 2023 at 4:05 PM jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> HI All,
>
> I wanted to revisit this thread for one reason.
>
> If you turn off the inverter at the
t;
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Darryl Thayer via RE-wrenches
> *Sent:* Wednesday, July 19, 2023 12:17 PM
> *To:* newrewrenches
> *Cc:* Darryl Thayer
>
Customer wants me to propose adding solar modules to north roof. I don't
know how to get answer from PV Watts?
___
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Pay optional member dues here: http://re-wrenches.org
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I have one of four one alarm locked no tech support
On Fri, Jul 14, 2023, 2:11 PM Darryl Thayer wrote:
> Yes the pytes are good price, I had problems and no tech support
>
> On Fri, Jul 14, 2023, 1:51 PM Andrew Perkins via RE-wrenches <
> re-wrenches@lists.re-wrenches.org>
Hi you have the correct people on the job but get at the basics the forces
causing the vibration is magnetic. You have to break the magnetic path. If
it was electrical a simple cut in the enclosure. But it is magnetic which
is much harder to stop. If the hum stops with the cover off replace the
check with Iron Ridge as they have done for me
On Fri, Jun 30, 2023 at 4:15 PM Bruce Erickson via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hi California guys,
>
> We have a couple of leads that are manufactured homes, that have to be
> permitted through the CA Housing and
Hi David I think although it is 450 volts out, the battery is actually moch
lower voltage and has a buck boost charge controller. It bucks the voltage
down to charge the battery and boost the voltage to serve the load. If you
open the battery and rewire you will need a BMS, you can find on line
Are we all thinking single phase? Another idea would be to use plastic
enclosures in at least some way to break the magnetic path. This is a lot
of current, and it will cause magnetic heating where the magnetic loop is
complete.
On Thu, Jun 29, 2023 at 10:19 AM Kirk Herander via RE-wrenches <
Hi all, just a few comments, The inverter charger has a ripple on the DC.
All have this; Outback is no exception.
However, all wires should be run together, positive and negative
same conduit and same hole, as the AC ripple magnetic effects cancel
from both wires. Also, the circuit breaker has an
I have had similar problems with other equipment. fully the battery to top
balance and then reset the SOC
On Thu, Jun 29, 2023 at 7:04 AM Jeremy Rodriguez via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> We have about 20 units out in service.
> All of the batteries SOC readings
Hi Jay and all, I belive Steve meant C/2 or C/3; just a typo. My oldest
set of LiFe is almost 10 years? It has a fastest charge rate of C/0.2
because the 10 kWh is charged by 1.6 kW solar. These batteries are doing
fine. I do not have a way of measuring the current capacity but
On Mon, Jun
Hi Jay, Larry says is correct. My experience, with cells and there BMS is
they need to get up to top balance voltage then the BMS will stop charging
the full cells and bring the remainder of cells up to fill charge. My
oldest set is about 6 years old, since I understood they have been fine
On
.
> Good Luck,
> Howie
> Sun Catcher
> 802-272-0004
>
>
>
> On Sat, Jun 3, 2023 at 1:08 PM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> I have a Pytee battery that has gone into alarm. Won't come out.
>> Pytee says
I have a Pytee battery that has gone into alarm. Won't come out.
Pytee says to connect the computer and diagnose. That is all they said.
They do not answer emails asking for further advice. Does anyone know
what to do? Sps to use? Address to use?
Hello, just an onion of an old person. I have needed a lot of tech help, I
find Sol-Ark the best tech, So I would go with experiance.
On Thu, Jun 1, 2023 at 11:19 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Hello All,
>
> I am sizing my first Fortress system,
Was the inverter connected at the time of testing? If so I suspect the
inverter is loading the solar array below Vmp
On Wed, May 17, 2023 at 11:23 PM frenergy via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Wrenches,
>
> I've got a call from a customer that said their
Hi Jay, if this is the LA AGM thin plate, I tried to look into this a few
years ago. Being AGM, they have a recombination feature; when overcharged,
they recombine the H2 O2, thus self-balancing, just like the top balance in
LiFe. The caution is not to charge too fast in absorb mode. I decided
I have used Egauge in this situation many times. They even have
revenue-grade Current Transformers.(CTs)
Their tech support is good, I find even I can set them up easily. They
use normal English in their documentation.
On Thu, May 11, 2023 at 3:21 PM Larry Brown via RE-wrenches <
Sorry if this is nonsense, but your existing Radian is your "AC grid
source," It can act as the paralleling.
AC coupling source. I did this about 20 to 30 years ago, using FX
inverters, not Radians, to power a large motor.
Can your Radian Mate 3 run in grid zero? Or if not, one inverter runs all
I am in Minnesota utility is Xcel energy
On Tue, May 2, 2023 at 9:12 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Which utility has such low rates?
>
> SMUD?
>
> Jay
>
>
>
> On May 2, 2023, at 12:05 PM, Darryl Thayer via RE-wrenches <
Hello, I apologize for perhaps a dumb question. I did go online to
ask Outback twice, no answer.System Radian 8 kW and Mate3 with 2 each
1.5 kW solar arrays into 2 ea. MX60s. Battery 20 kWh LiFe open loop. The
owner wants the lowest energy bill. The rates are; off-peak at 0.04/kWh
and
Hi all, if the micros are not producing power I would expect an extremely
low power factor. The power factor of all inverters is low not in use.
Make sure electrician is measuring during production. My measurements are
extra low for micro inverters.
On Thu, Apr 27, 2023, 4:11 PM August Goers
This power factor is impossible, can he measure the apparent power then
the real power separately devide the real by apparent to get power factor.
I guess he has connections wrong, wrong leg of split phase. If the
inverter is off, then possible, do you measure current off the inverter and
DC
Hello, I have had similar serious problems when working with old
batteries. Their voltage rises rapidly when charging. The older
batteries will lose in capacity and more so charging rate. Have the
batteries been equalized periodically? If not, they will develop sulfur on
the plates. The
It depends upon the pulse. It you are referring to a an EMP caused by a
solar storm this is hard on large electrical grids. No problem on Solar
equipment. The voltage current is Ndf/dt number of turns times rate of
change of flux, the grid can collapse but if you disconnect from grid
(multimode
Hello the answer is yes. On a job several years ago to finish I worked
after dark. It was a full moon, and a street light was nearby I got bit
from a 500 Voc module string. I am sure I did not have 500 V but it only
takes 20 ma. To be deadly. I did not get my volt ohm meter out but I should
Hello i have an XW Pro that starts a 2 HP induction motor reliably, i
noticed th scope indicates battery voltage current issue, be sure your
batteries can supply the starting surge. I recently installed a new set of
batteries. Some not all Li can surge.
On Sat, Jan 14, 2023, 5:13 PM bob--- via
o or
> two if you are just over the limit. Even better, maybe they would allow you
> set an export limit on the micros you have installed.
>
>
>
> I had a recent situation where a 40kW DC system had exceeded a utility
> transformer by only 2kW AC, so a simple redesign avoided an $8k inv
It is common practice for the utility to overload the transformer a lot for
the potential load. They expect no one will use their service at maximum,
furthermore, they expect non coincidence of loads. Look at the transformer
most have a label as to the kW or the unit, and the utility should give
Assuming this is a zero instantaneous no export, not on the daily or
monthly. I have installed a few XW, and XW PRO inverters, however, I have
never done an instantaneous no export project on the entire service. The
problem is the load. Ideally you want to monitor the service entrance and
Hi, happy holidays to all. Of course it sounds like a dual bonding
situation. Inverter generators are normally floating neutral, rotating
generators are normally neutral bonded internally in the generator. The
GFCI detects a neutral current on the ground wire. If the generator is
bonded
Hi all, not enough information.
Does her grid allow export?
Does she have a period of poor sun?
What is her daily or monthly consumption?
Is there an AC or DC limit on connected solar power?
Will her AHJ or Utility allow line side tap?
The system seems to be poorly designed. Power Walls are AC
Hello and happy holidays. About 10 years ago, I had a similar problem with
a similar customer who wanted a similar problem solved. The Generac auto
transfer switch needed a 12 volt source. When the grid went down the
generac transfer switch disconnected and waited about 10 to 15 seconds then
Hi Chris, this a Darryl kluge approach. Get a 50 Hz battery charger, a
LiFePO battery. And a off grid inverter. 20 kW is tough, maybe a 15 kW
inverter woild surfice. The battery plus battery chsrger should be sized
to handle 300 amps 48 volts. 15 kW / 50 volts= 300 A.
If the battery can handle
Hello, breakers are thermal-magnetic the current heats the breaker; if the
current is high enough for long enough, a solder pot inside melts; this
current and excessive heat causes other breakers to open Are you sure the
string current is less than 80% of the breaker rating and the wire
I want to comment, maybe without value. The breaker you mention is called
a "shunt trip" breaker. This is common type breaker in the electrical
industry. The MN breaker has a 24 volt solenoid that trips the breaker.
Shunt Trip breakers have the solenoid voltage for the system voltage. BUT
the
Yes but how do you trigger fire raptor except by the fire raptor switch?
It will take care of by manual control but what about 690.11?
On Tue, Apr 19, 2022, 5:06 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> You may want to look at fire raptor as a RSD option.
>
I understand the complete Tigo line and any sun-spec MLPE will work,
however, it also requires the RSD box from Schneider I don't have
experience with any other than the firestop tigo
On Tue, Apr 19, 2022 at 11:42 AM jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> HI All
>
>
fety issue here, but I also don't see how the NEC allows the
> conductor to be sized for anything less than 200A.
>
> Jason
>
>
> On Sun, Apr 17, 2022, 11:29 AM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> The tap r
r
>
> Peter T. Parrish, Ph.D.
> President, California Solar Engineering
> 1107 Fair Oaks Blvd Ste. 351
> South Pasadena, CA 91030
> (323) 839-6108
>
> On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>
> y
ident, California Solar Engineering
>> 1107 Fair Oaks Blvd Ste. 351
>> South Pasadena, CA 91030
>> (323) 839-6108
>>
>> On 04/16/2022 3:59 PM Darryl Thayer via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>
>> yes, there are t
gt; off-grid scenario with a generator and smart load, we would now need to
>> integrate an AC disconnect for generator input (grid) and either a fused
>> disconnect or loads panel for any smart load output. With the 12K unit, the
>> integrated breakers help cut down on BOS and install ti
yes, there are three versions of the cybo inverter, the one that I a most
familiar with produced a 60 HZ AC signal; the voltage did not exceed 120
volts or 240 volts. The voltage out times the current out was equal to the
voltage in times current in. This allowed me to operate a resistance load,
Hello, The overcurrent device is to protect the conductors. you can put
any size wire, but you must protect with the overcurrent device. REmember
in solar equipment; you may have more than one supply source. The DC best
example is solar modules connected in parallel, on
On Fri, Apr 15,
Hi, Ron, Yes, you must be careful of the MPPT inputs. You state Sol-Ark
has an 18 amp max input, meaning you can not have more than 1 string
supplying an MPPT if your 60 cell modules are 10 amps Isc. You state
Sol-Ark has a maximum voltage per MPPT of 500 volts, this voltage is *not
Voc x number
ad, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* Wesley Kennedy [mailto:hathaso...@yahoo.com]
> *Sent:* Monday, March 28, 2022 9:58 AM
> *To:* RE-wrenches
> *Cc:* William Miller; Darryl Thayer
> *Subject:*
Hello, Sorry to be so late but I have been overloaded. Just a note on
physics of lifting water. The calculation indicates if you pump 1 gallon
per minute up 300 feet it required a water hp of 5 HP
Use this base number and good pumps are about 70% efficient. If the flow
rate is not 1 GPM adjust
Once in my life i had an inspector concerned about strain relief, i used a
GBC on each end of the pipe, it surficed. I think i could have used a bell
mouth connector.
On Tue, Mar 22, 2022, 3:43 PM Dave Tedeyan wrote:
> Hi All,
>
> I have an inspector giving me a hard time about wire management
Hi Jay I am not sure what non-cycling use is, I have mentioned before in my
experience where a cell in the string can become lower in charge and the
string loses capacity in discharge because the BMS shuts off the complete
battery when the troubled cell reaches low voltage cut out. To prevent
Hi i have a single phase motor at a old install that i replaced about
8 years ago. Would it help if i made some starting load surge measurments?
On Fri, Jan 28, 2022, 11:52 PM Darryl Thayer wrote:
> Hi Chris, In the past, I was able to start a 5 hp pump motor using a VFD.
> ,
Hi Chris, In the past, I was able to start a 5 hp pump motor using a VFD. ,
I can not remember the make, of the VFD but I think it was an ABB 7.5 or 10
HP connected to a single-phase motor. I started it on two Outback 3548s
(or maybe 3024s). Now for the tricky part, I have done this several
Yes, but if the rise is greater than about 30 feet (25 feet even) the water
head is greater than atmospheric and the water will draw a vacuum in the
pipe. These numbers depend upon the location (elevation) and temperature
of the water.
for example at 15,000 feet the atmosphere is about 1/2 or sea
Yes, i agree, with others, DC has lower losses when at higher voltage, when
i was involved with similar project, we took transformer cost plus wire
cost did some simulations, (added wire and transformer for different
configurations) and selected lowest cost.
On Mon, Jan 10, 2022, 5:34 AM Foxfire
Hi Chris, I have used the above configuration with success. Here are some
background ideas. I have done some simpliphi installs however I am old and
these are five to 7 years ago. The Simpliphi's I installed had a top
balance BMS. (When one of the cells reaches full charge voltage, the BMS
Jay I am confused as usual, what are the loads? AC or DC? How are you
charging the battery from the generator or how is the battery powering the
loads? What is the desired current or the size of the generator? sorry
if this I dumb question
On Wed, Dec 1, 2021 at 2:23 PM Jay wrote:
> I got
forgive me I am not the brightest bulb. But if you are replacing the
Outback 2200 RE with 2100 AH and about 1100 AH usable, or @ 51V then 56
kWh with Lithium, 62 kWh, Do you have the charging capacity to charge at
280 amps? This is to allow full use of the solar array. One of the things
I have
Hi all, my experiance, is a Lead Acid battery is acceptable under 480
Storage Batteries. 480 is the older article and Lead Acid has been used
with great success particularly under 48 volts with no outside disconnect
required. 480.7(A)
On Tue, Jul 20, 2021, 2:37 PM Eric Smiley wrote:
> Sol-Ark
Hi Jay, here are my guesses:
1) Customer is using all the power (3.5 is not a large array)
2) Per William Miller, the batteries are shot.
3) combination of 1 &2
4) Bulk voltage is too high, daily trying to go to bulk voltage drives the
batteries to the grave. Float voltage is too high, acting as
Hello all, When I have done a small 3-phase I have used Outback GVFX 3548
up to 32 kW (120/208) my largest was about 45 kW it worked for 12 years,
then was replaced when the owner wanted to go larger. I made a 3-phase
design using Solark but SolArk did not understand 3-phase and could not
Regarding 3 Power Walls PWs, more solar modules, and inverters. I hope
this is helpful, I am always going to first principles. You did not
mention what the customer expectations are. I see three common
possibilities, 1) For backup power, in which case you need generation
control, such as the
Hello, I hope this helps. I have very little PW experience, the one i was
involved in had a 1741 transfer switch with grid monitoring on the mains.
When the grid failed the switch would disconnect from the Grid and connect
the PW to the panel or sub-panel. The PW charges from the AC source when
Hi Chris, It is about 30 or 40 years since I installed solar pool heating.
0) a pool cover is the best heat source, should be easy on and off
1) use an ECM pool pump, big cost savings. As the pump will run a lot. It
will quickly pay for itself
2) I liked the 4 foot, 3 foot? wide headers and
Hi, could it be a soft grid issue? Where if you put power into the grid,
it changes voltages? Measure the grid voltage using a recording meter like
an Egauge, use the one (1) second scale (10 minutes regestar). Sorry if
this is of no help.
On Mon, Mar 29, 2021 at 5:58 PM Tump wrote:
> Folks I
Here is my two cents worth. the PW is "grid following" and so is the sunny
boy when the grid is up. When the grid fails the PW becomes grid forming,
bi-directional, inverter charger with frequency shift to control charging.
The newer SBs will accept frequency shifts and be controlled. So yes it
Nick, Larry has it correct, the 4kW autotransformer (PSX 240) will use
both of the 120-volt legs of the inverter. It has two winding each able to
handle one leg to neutral, but able to transfer power from one leg to the
other. You can have 8000 Watts on either leg, one at a time,
continuously,
The way a GFCI operates is by comparing the line current and the neutral
current inside the device. If some of the neutral current is returning
through a ground circuit instead of the neutral the imbalance will trip the
device. The generator neutral and the inverter neutral must have a common
I think the earlier code required a 45 degree slope for any vent above
ceiling, attic space
On Sat, Aug 29, 2020, 6:07 PM Jerry Shafer wrote:
> I have relocated roof vents several times, just have to make sure they
> comply, no P traps, flat or downward trends. Fasten correctly to the
>
They are like LA batteries and have a cycle count affect lifetime and like
LA batteries the life cycle depend upon DOD per cycle. They also have a
calendar life. It is generally accepted that LIFE batteries have 5000 deep
cycles and 10,000 equivalent cycles if they are shallow, slow discharge and
Kilovault Pl AGM for backup power, i am replacing C 15 year old backup
power batteries now much cheaper when cycling is infrequent. By the way
most AGM need cycling.
On Sun, Aug 9, 2020, 3:10 PM Ken Schaal wrote:
> Any thoughts on Kilovault that Morningstar is teaming up with?
> Time for me
The linear current booster is capable of increasing current on say motor
start-up, once the motor is started, its current needs dropdown. A battery
has high current capability, so I would not expect any advantage in an
LCB. If the LCB is of the buck-boost type you may be able to run a 24-volt
Also my supplier has XHHW rated at 1000 volts
On Sat, Aug 1, 2020, 9:18 PM Darryl Thayer wrote:
> I would not worry as 1000 volt AC has a 1400 volt peak, voltage,
>
> On Sat, Aug 1, 2020, 10:33 AM Kirk Herander wrote:
>
>> I need to spec battery cable for a nominal 850 vdc
I would not worry as 1000 volt AC has a 1400 volt peak, voltage,
On Sat, Aug 1, 2020, 10:33 AM Kirk Herander wrote:
> I need to spec battery cable for a nominal 850 vdc LFP bank. Several
> brands of power cable list their rating at a dual 600/1000v. it is my
> understanding that to be listed in
Yes but see Article100.1 for the definition of accessible and readily
accessible, to access you need a ladder. implies I think where the 8-foot
idea come from
I think this is poor writing, but it is accepted to be beyond reach
On Fri, Jul 17, 2020 at 11:02 AM AE Solar
wrote:
> Kirk,
> Not sure
ad, more steps, therefor cleaner so maybe at
> lower charge rate it’s not clean enough.
>
> As to your issue it could be power factor Being really poor.
> Can you tell us what inverter, yea 5 years ago is a long time.
>
>
>
> Jay
>
> Peltz power.
>
>
>
>
>
I think you said it well, about 5 years ago I tried to charge a car from an
off-grid system. I did not record my events but the inverter had twice the
power of the level two charger, yet the inverter would get hot and trip
out. I was told a ferroresonant transformer may help, and it might be
In my experiance if the combiner is in the sun breakers will be hot
breakers are a thermal device and should be kept at room temperature. Try
substituting the HCAC type breaker for the stanard breaker
On Thu, May 21, 2020, 8:57 AM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
>
I have spoken with a li battery
researcher. Do not charge over 85% of battery full charge voltage and they
will last over 25 years. But go above or below bottom and trouble
On Sun, May 24, 2020, 10:27 AM Jay wrote:
> One question I have for those more versed than me in lithium is, I’m under
>
my two cents worth, 690.11 says turn off from all arcs, that means serial
and parallel
that means module lwevel shutdown
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Hi Jay, as I see it there are two problems with parallel. One is the
burnout of the FET in one of the controllers, and the other is the "not
knowing what the other is doing. The burn out is caused by the capacitors
in one CC supplying a surge current to the other CC. I tried this and it
seemed
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