Re: [RE-wrenches] GT w/ BB

e Discover rack mount set up rather than AES's and custom bussing.Jason,That's exactly what I was thinking, if I go the Sol-Ark route. Last time I ordered custom panelboards like that, they were six months out.On Mon, Sep 18, 2023 at 1:18 PM Jay via RE-wrenches <re-wrenches@lists.re-wrenche

Re: [RE-wrenches] GT w/ BB

and 100kWh battery. I think I'm going to try the Discover rack mount set up rather than AES's and custom bussing.Jason,That's exactly what I was thinking, if I go the Sol-Ark route. Last time I ordered custom panelboards like that, they were six months out.On Mon, Sep 18, 2023 at 1:

Re: [RE-wrenches] GT with BB

Hi Bill Looks good to me! I like the idea of all the copper/connections behind a plexiglass dead front. Makes a lot of sense and seems safe. I’m wondering what your inspectors say about it or how you convince them? It’s definitely got me thinking about doing a job I have in mind with buss ba

Re: [RE-wrenches] Propane range options for off-grid?

I found this brand at Home Depot. No Ac required. Uses battery ignition. I didn’t look into reviews and Ive not used it. JaySummit Appliance 30 in. 3.7 cu. ft. Gas Range in White WNM210Phomedepot.comOn Sep 26, 2023, at 4:16 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote: Hey David,   I wis

Re: [RE-wrenches] Module level electronics mounting

I like the idea but haven’t used it yet. I don’t see any code issues with the longer wiring?JayOn Sep 28, 2023, at 10:52 AM, Kirk Herander via RE-wrenches wrote:All,Has anyone ever mounted MLEs (optimizers, microinverters, RSDs) on the perimeter of the array or elsewhere instead of underneath the

[RE-wrenches] 70-100 amp relay

Hi All, I’ve gotten approval from Atkinson using their GSCM for warmup/cool down for a generator. Now I”m in search of a 70-100 amp 120v-240v coil DPSP NO relay/contactor. There are lots out there but thought someone might have one they highly recommend. It won’t get used much at all. Tha

Re: [RE-wrenches] 70-100 amp relay

hes > wrote: > > I'm sold on Gigavac quality. I’m not sure if they have the AC coil option. > > https://www.sensata.com/products/gigavac-power-contactors-fuses/gv-contactors > > Larry Crutcher > Starlight Solar Power Systems > > > > > On Oct 3, 2

Re: [RE-wrenches] Well pump with Sol-Ark

I’d look at a 3 phase pump with vfd/soft start control and eliminate the start surge. Jay > On Oct 11, 2023, at 8:12 AM, frenergy via RE-wrenches > wrote: > >  > I'm looking for opinions and/or real world experience on recommendation for > the largest 240V submersible well pump the Sol-A

Re: [RE-wrenches] SOK Batteries

Buy another SOK battery so that doesn’t happen. Or maybe happens lessJayOn Oct 11, 2023, at 5:55 PM, Kristopher Schmid via RE-wrenches wrote:Hello brain trust,Anyone have experience with SOK lithiums?  Here's my issue.  Client has a tiny home and bought their system online (I know, run away...). 

Re: [RE-wrenches] Nuance ground racking

Does anyone have a link or picture of the ground anchor in question? I couldn’t find one. ThxJayOn Oct 12, 2023, at 7:07 AM, Dave Tedeyan via RE-wrenches wrote:Jeff, Thanks for the notes and things to look for from the field. I was not aware that there are two versions of their PowerJack out ther

Re: [RE-wrenches] XW Pro failures

I have a buddy that has had two different  stacked pairs with issues. It took months of back and forth on the one which they did replace them however one of the inverters sent from Schneider was a euro 230/50hz. Taking another trip and more delay. And same guy, another project with monitoring etc t

Re: [RE-wrenches] XW Pro failures

In my buddies case, most definitely XW Pro jay > On Oct 13, 2023, at 9:39 AM, Dave Angelini Offgrid Solar via RE-wrenches > wrote: > > It must be an XW+ that died. The XW pro field circuit validation testing beta > was complete in early 2019. > > That XWP is still working fine for me. Not ma

Re: [RE-wrenches] Cleaning PV mods

I tell my clients to wash your panels like you’d wash your car. Similar soaps if needed to remove pollen or harder to remove things and softer bristle brushes help. Doing it during the heat of the day means a larger chance of mineral deposits vs cooler times depending on your water. Myself I don’t

Re: [RE-wrenches] Need a hand with Sunny Island/Sunny boy AC couple

Hi williamCan you tell us which SI/SB you have?JayOn Oct 21, 2023, at 5:49 PM, William Miller via RE-wrenches wrote:Friends:I’m kinda stuck on a project setting up a SI/SB AC coupled system off grid. When the SB inverters ramp up the battery voltage jumps to 69 pretty quickly and the system shuts

Re: [RE-wrenches] Outback Radian Generator Charging

What is the charger ac limit set to?JayOn Oct 25, 2023, at 2:38 PM, Mac Lewis via RE-wrenches wrote:Hi Amos,What input mode are you using?Try switching to "support" mode and see if the charging current increases. On Wed, Oct 25, 2023, 1:24 PM Amos Post via RE-wrenches

[RE-wrenches] ITC and loans

Hi all. Any quick answers about how the ITC tax credit deals with loans on a solar system? Thanks Jay ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Ch

Re: [RE-wrenches] Outback Radian Generator Charging

. By my math we should be able to see about 6KW+/- of charging power. We are using Generator input mode I  believe.  We will try switching to Support mode and see if that helps.  By the way batteries are 8- Simpliphi 3.8.    Sent from my Galaxy Original message From: Jay via RE

Re: [RE-wrenches] Off Grid, Cloudy Days, Solar Tilt Question

Hi BradOut of curiosity, what is the actual difference between the two on those cloudy days. ThxJayOn Oct 25, 2023, at 5:04 PM, Bradley Bassett via RE-wrenches wrote:I used to have both an array at a 60° tilt and one at 14° tilt. In the winter the high tilt array did better on sunny days, and on

Re: [RE-wrenches] Outback Radian Generator Charging

What I don’t understand is that the inverter was limiting amps while the generator was not. If the generator wasn’t able to produce the power, then it would have had the usual issues which causes the inverter to drop it and then reconnect. But that wasn’t happening so it appears the generator

Re: [RE-wrenches] Aging Batteries

I have had a much different experience with older batteries. 1. check the SG and volts under load like at night. And see if there are any weak ones. Since you have 2v cells you can afford to lose a few. 2. If they all check out more or less equal, and i’m guessing that they are using lots o

Re: [RE-wrenches] AC Coupling

I’m going to both agree and disagree Agree The older inverters ( Schneider, Outback, etc) your drawing is correct. Disagree For many new inverters ( sol ark, ev4, fortress) they bring ac coupling into the inverter directly. Usually on the generator input and not in the backup loads panel. And I wil

Re: [RE-wrenches] Radian Question

Hi drake The early mate 3 has a glitch which I think they changed in the 3s. You e got to set the rebulk volts above what you want it to charge at. IE if the battery volts don’t get below the rebulk volts it won’t charge. So if your shallow cycling the batteries it’s common it won’t get belo

Re: [RE-wrenches] Radian Question

V 280? (IE 140 V X 2). Thanks for your help. Drake Drake Chamberlin Athens Electric LLC Ohio Electrical Contractor’s License 44810 NABCEP Certified PV Installation Professional ---   On 2023-10-29 15:45, Jay via RE-wrenches wrote:   Hi drake   The early mate 3 has a glitch which I think t

Re: [RE-wrenches] Radian Question

reading of 251 and higher when the inverter would not connect. Thanks, Drake Drake Chamberlin Athens Electric LLC Ohio Electrical Contractor’s License 44810 NABCEP Certified PV Installation Professional ---   On 2023-10-30 20:37, Jay via RE-wrenches wrote:   Drake I forgot to ask, but I&#

Re: [RE-wrenches] Radian Question

based >> on the reading of 251 and higher when the inverter would not connect. >> >> Thanks, >> >> Drake >> >> >> >> Drake Chamberlin >> >> Athens Electric LLC >> >> Ohio Electrical Contractor’s License 44810 >> >&g

Re: [RE-wrenches] Radian Question

g normally. ---   Drake Chamberlin Athens Electric LLC Ohio Electrical Contractor’s License 44810 NABCEP Certified PV Installation Professional On 2023-10-31 12:14, Jay via RE-wrenches wrote:   Is the radian connected to grid sell?     If so then I'd say yes the higher grid voltag

Re: [RE-wrenches] Small Diesel generator recommendation off-grid

It depends a lot on the what you want. open chassis sound enclosed super quite tier 4 prime/standby built in 2 wire start etc. MQ power make great units. https://www.mqpower.com/whisperwatt.html jay > On Nov 4, 2023, at 7:45 AM, Mac Lewis via RE-w

Re: [RE-wrenches] Cable sizing for high current modules? NEC interpretation/guidance?

I’ve wondered what other variables are at work given that mostly these connectors work as they should. I’d like to see them come with plugs covering the openings. This would keep dirt, salt air, moisture, etc  out until they are connected. As to if there were lots of failures with SW modules then I

Re: [RE-wrenches] Integrating Fortress E-vault maxes into an SI AC-coupled system

Maybe someone else knows differently but it was explained to me that the fortress batteries have a relay that disconnects the battery if the voltage gets to high or low. There isn’t any electronic  device to change battery impedance besides what the actual cells are doing. JayOn Nov 12, 2023, at 12

Re: [RE-wrenches] Integrating Fortress E-vault maxes into an SI AC-coupled system

via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:Maybe someone else knows differently but it was explained to me that the fortress batteries have a relay that disconnects the battery if the voltage gets to high or low. There isn’t any electronic  device to change battery impedance b

[RE-wrenches] Hydraulic KO tool

I’m wondering if anyone has recommendations for an inexpensive hydraulic KO tool. I have a project where I need to punch some 4” holes in gutter. I can’t get a jig saw or anything in there and a 4” hole saw bit is crazy expensive. There are many inexpensive hydraulic tools out there that sho

Re: [RE-wrenches] Mate 3s with legacy FX inverters

Agreed to all said. Numerous systems with mate 3/3s and every inverter and stacking is all fine. New hub 10:3 required. MX CC don’t appear on the mate 3/s. Few of my systems are on optics so can’t comment on that. JayOn Dec 12, 2023, at 1:15 PM, Roland Shackelford via RE-wrenches wrote:We have nu

Re: [RE-wrenches] 48 V DC temp sensing relay

Hi Drake Try this one. I get a lot of equipment from supply house. Since you need on with temp rise it’s an AC type. This one will do 8 amps at 120v so a small amp dc fan won’t hurt the relay. Jay https://www.supplyhouse.com/White-Rodgers-1609-101-Refrigeration-Temperature-Control-30-Degrees

Re: [RE-wrenches] SMA TL-22 insulation resistance error

I think that using a megger etc to test the panels and wires is what I’d do before I yanked out  all the Wires. They are not that expensive anymore and maybe possible to rent one?JayOn Dec 13, 2023, at 8:53 AM, Dave Tedeyan via RE-wrenches wrote:Hi All,I am curious to hear if anyone else has run

Re: [RE-wrenches] Recommendations for A/B battery switch

HI Ron, I prefer to use two ON/OFF switches rather than A/B. That way you can always have power to the loads if you want. I can’t say they are the best but the Perko 9703 seems high quality and has been around for years. Its just a single on/off rated at 450 amps continuous and UL marine.

Re: [RE-wrenches] Odd battery charging behavior with Outback inverters

There is or was a setting in the mate 3/s that the rebulk volts has a trigger. If the voltage doesn’t get below it it won’t charge (absorb) properly. Fix is to set the rebulk up higher than the charge voltsI don’t know if that’s your issue or not but I have fixed this  on systems. JayOn Jan 12, 202

[RE-wrenches] sol ark 15kw

HI All, I have some sol ark 15 questions, and I’m sure someone out there has the answer as I can’t seem to find it in their literature How much can it output AC with solar: offgrid and ongrid in sell back mode. What I read was 15kw, but I can’t figure out if thats both on/off grid or not? t

Re: [RE-wrenches] Recommendation on DC Breaker

I’d use an IMO disconnect as you don’t have any current limitations. I think sometimes things get lost in translation. Jay > On Jan 18, 2024, at 8:43 AM, Jason Szumlanski via RE-wrenches > wrote: > >  > I am installing an EG4 off-grid 3k inverter for the first time, and the > manual req

[RE-wrenches] Lorentz pumps

Does anyone know if Lorentz pumps still exist in the US. Someone is looking for a PS200 control box. It seems to be intermittent Thx Jay ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE

Re: [RE-wrenches] Schneider Insight Home and Insight Cloud

I guess the SCP is back in production. But if I understand correctly you still need the insight to program the XWPRO versions? thx jay > On Feb 7, 2024, at 8:50 AM, Drake Chamberlin via RE-wrenches > wrote: > > My experience with using Insight and Xanbus is that the projects never end.

[RE-wrenches] Lithium batteries

One of the things that I’m just now learning is about BMS failure/warranty/fix/replacement. Some can be field installed some need to go back to the OEM. I guess its something else we need to check on. Jay > On Feb 7, 2024, at 9:06 AM, Bradley Bassett via RE-wrenches > wrote: > > Read

[RE-wrenches] rolls battery question

Hi All, Can anyone tell me off the top of their head if older Rolls 6CS 25PS Do they have welded or bolted internal connections? I have a site I’m going to, very remote that might have a bad cell or two and I’m just figuring out how I’m going to bypass the bad cells. thanks jay _

Re: [RE-wrenches] Lithium batteries

this week I heard their "diagnosis", and then I saw Jay's timely post? I knew it was time.  Sincerely, Ray Walters Remote Solar On 2/7/2024 9:19 AM, jay via RE-wrenches wrote: One of the things that I’m just now learnin

Re: [RE-wrenches] In search of better generator start relay for Outback system

I would use a sealed relay. The SS one should work. Or a 12v cube relay like in cars.  Super cheap and reliable JayBOSCH 0332209150 Changeover Mini Relay - 5 Pins, 12 V, 20/30 A - Singleamazon.comOn Feb 9, 2024, at 12:55 PM, William Miller via RE-wrenches wrote:Dan: I think a solid state relay is

[RE-wrenches] XW EQ question

HI All, I have a client with an older XW 6048 with 2 x XW-60 controllers, SCP etc. He can’t seem to get the EQ to work with either equipment. Its set to 62.4v for Rolls flooded batteries, but it won’t go above 60v. It is charging normally to just at 60v so its not a temp sensor failure. Any th

Re: [RE-wrenches] XW EQ question

sage----- > From: RE-wrenches On Behalf Of > jay via RE-wrenches > Sent: February-12-24 11:36 AM > To: RE-wrenches > Cc: jay > Subject: [RE-wrenches] XW EQ question > > HI All, > > I have a client with an older XW 6048 with 2 x XW-60 controllers, SCP etc. >

Re: [RE-wrenches] Fortress

Hi williamCould you share the equipment used and what issues you had?ThxJayOn Feb 14, 2024, at 3:13 PM, William Miller via RE-wrenches wrote:Peter: I have only purchased one set of Fortress batteries.  There have been issues, I am sure many of them self-induced.  Fortress has been overall very re

Re: [RE-wrenches] EG4 Equipment

fortress is making improvements to their firmware for sure. The fortress envy 12 has generator warmup/cool down which is a really important feature  IMO. The eg4 not. Nor does the Deye sol ark. JayOn Feb 16, 2024, at 8:48 PM, Chris Sparadeo via RE-wrenches wrote:Howie,The EG4 18K and the Fortress

Re: [RE-wrenches] EG4 Equipment

A number of people have mentioned strict code compliance. How are lead batteries dealing with this? thanks jay > On Feb 17, 2024, at 12:27 PM, Ray Walters via RE-wrenches > wrote: > > Chris; > > I was definitely moving to the LFP camp for off grid for all the same reasons > you mentioned,

[RE-wrenches] AP systems contact info

Does anyone have a working phone number for AP systems? I have a system that works but all the LED lights don’t work on the inverters thanks jay ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address

Re: [RE-wrenches] Outback Board Repair

Hi JohnThe work around is to make sure you e got a new enough serial number to at least talk to them about what ever the issue is. But this is a huge new development in a bad way.JayOn Feb 22, 2024, at 6:55 AM, John Blittersdorf via RE-wrenches wrote:I just tried to get Outback tech support and t

Re: [RE-wrenches] Non-battery string inverter options?

Hi williamFronius 7.6 kw are in stock. I’ve installed a number of fronius with no issues. JayOn Feb 22, 2024, at 4:56 PM, William Miller via RE-wrenches wrote:Friends: Now that RSS is required on almost every installation, I am having trouble finding a plain old, non-battery, non-MLPE string inve

Re: [RE-wrenches] Fwd: Re: $300 + transmission fee!

Hi williamIs California now doing demand charges? And is it instantaneous or 15 minute average?  JayOn Feb 25, 2024, at 11:23 AM, William Miller via RE-wrenches wrote:Friends:I am pondering a plan to prevent usage spikes. It would involve installing a battery inverter that has true generator supp

[RE-wrenches] 30% ITC

A question maybe someone/s can answer or offer up some thoughts. A neighbor who’s an economist asked me the following question Does the 30% ITC increase the cost of solar? By which he ment that are installers, wholesalers, etc increasing the cost of product and installations because of the I

Re: [RE-wrenches] Electrolyte level measurement

Hi williamFor checking level the best trick I’ve ever seen is a solid glass rod. I can’t remember if you have to grind one end flat or not. When you put the end into the water the top end your looking at changes color. The side you look at would be the one you grind. Mark the rod with tape or use a

[RE-wrenches] DC fountain pumps

HI All Any recommendations for quality DC fountain pumps? Brands, suppliers etc thanks jay ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listser

[RE-wrenches] Enohase tech support

Hi all Is there anyway to get tech support with remote coms? I got a call just the other day from someone with an envoy. It’s stopped communicating to enohase. Enphase says they need the installer who’s now gone. They just won’t help the customer. It’s about a 5 hr round trip for me. Which is

Re: [RE-wrenches] Enohase tech support

regular access is not an option. > What kills me about Enphase is that every step of the way over the last 15 > years - EVERY single time they changed their inverter architecture, they > promised that all the new stuff would be backward compatible with old gear. > And every single t

Re: [RE-wrenches] Ballasted ground mounts

Here is an interesting design. PowerField Energy PowerRack PV solar ballasted ground mount systemsolar-electric.comOn Mar 21, 2024, at 11:08 AM, Bradley Bassett via RE-wrenches wrote:Is Aerocompact still around ?  They had a nice simple ballasted ground mountBrad BassettOn Thu, Mar 21, 2024, 10:4

Re: [RE-wrenches] Good tech support

As to the envy not being good for LA batteries. Yes rhe 60v max is just too low. Does it have 3 stage charging?I’m curious to see what the new midnite solar inverter has to offer. It shows up to 64v battery. JayOn Mar 28, 2024, at 6:44 AM, John Blittersdorf via RE-wrenches wrote:Howie,    I might

Re: [RE-wrenches] Mate3s error vs. event log

2 things. Maybe you can sell them a service contract and clear/check the events 1x week via optics. I don’t know if there is a way to prioritize events. To me Ive always had good success with the fndc in regards to be pretty accurate for reading %. Getting rid of it seems the wrong way to go. And L

Re: [RE-wrenches] Steel pipe purlins

If your looking to fasten into the steel pipe you look at Dynamicfasteners.comGreat productsJayOn Apr 3, 2024, at 5:34 PM, david quattro via RE-wrenches wrote:because it is an awning seems like you may be able to disturb the roof layer above the purlins, even if temporarily?If so then i think an

[RE-wrenches] midnite new inverter

Hi All, Does anyone know the pricing and when it’ll be available? The New Midnite MN15-12KW-AIO All in One (AIO) inverter Looks good. thanks jay___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Addre

Re: [RE-wrenches] midnite new inverter

Hi scott Yes I think for new larger systems the AIO are the present/future Jay > On Apr 9, 2024, at 9:42 PM, scot.a...@solarcentex.com wrote: > >  > Wow, are we in the golden age of inverter/chargers? If it had 200-a.p pass > thru it would be near perfect. > > Begs the question: are stand al

Re: [RE-wrenches] midnite new inverter

Can you explain what changes the eg4 18 inverter has vs the Envy as to LA programming? To me the Envy has a big advantage due to it having AGS warm up/cool down that the EG4 does not. Jay > On Apr 10, 2024, at 7:49 AM, Howie Michaelson via RE-wrenches > wrote: > > John, > If you are thi

Re: [RE-wrenches] midnite new inverter

tion, and frequency) that deliver a consistent > specific gravity in range. On the rare occasions you actually need to > equalize, you do it in person. When equalization is complete you return the > settings back to your curated values. > > > > On Wed, Apr 10, 2024 at 7:

Re: [RE-wrenches] Off-grid array far, far from the batteries

Hi Chris, If you run all 6 in series that puts you about 2.6% vd with #4 wire about 200vdc vmp and 10 amps. In cold enough weather you’re probably above the FM-100 so would put you in a 600vdc controller. I’d go with 600v controller vs doing AC coupling. More efficient and the more volt yo

Re: [RE-wrenches] midnite new inverter

be.com/RollsBatteryEngineering> >> <https://www.youtube.com/RollsBatteryEngineering> >> <https://www.youtube.com/RollsBatteryEngineering> >> <https://www.linkedin.com/company/rolls-battery-engineering> >> <https://www.linkedin.com/company/rol

Re: [RE-wrenches] PV/Charge Controller Troubleshoot Help

HI Jim, The CC is sure suspect. You didn’t mention what the battery voltage is. Those CC have a hard PV watt input limit. You can try and set it back to factory default and then reprogram, sometimes that works. I don’t use the FM-60, but always the FM-80 because of the fan replacement. th

Re: [RE-wrenches] PV/Charge Controller Troubleshoot Help

ler Troubleshoot Help > > It may be the fan. I had an FM 80 where the fan went bad that caused very > limited solar production throughout the day. > > Michael D Nelson > MD Electric & Solar, Inc. > 707-684-0064 mobile > 707-884-1862 office > www.mdelectricsolar.co

[RE-wrenches] speaking of batteries

HI All Speaking of batteries I wonder what you all make of this. I was reading the Fortress battery manual and it says they don’t recommend adding new lithium batteries to older lithium batteries if the age is over 1 year difference. Thoughts? thanks jay _

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

I’ve done this many times I use an Iota or power max charger to run the DC. Jay > On Apr 23, 2024, at 2:42 PM, Jason Szumlanski via RE-wrenches > wrote: > >  > I have an off-grid client who is working on replacing old equipment at a > cabin. He has a lot of 12 volt distribution in the hou

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

I agree with John. Most 12v fridges have small compressors. But I don’t know what they have. Personally a major reason to go 120/ac is to get a normal refrigerator. But you can measure the surge/load  and then size the charger accordingly. One feature of going charger is the lights are a lot bright

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

Yeah definitely no second battery. On Apr 24, 2024, at 6:41 AM, Howie Michaelson via RE-wrenches wrote:Jason,My vote would be for using a 120 to 12vDC power supply large enough to handle the remaining 12 vDC loads and skip the second battery bank. In my mind, this is simpler, cleaner, and if the

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

AC future breaker panel. All lighting was Edison base lamps, and all wiring was NMB Romex.  I wired like a normal house except for a 120-v panel and 12-v panel I relay and momentary switch by appliance for easy turning on of AC inverter.   On Wed, Apr 24, 2024 at 8:49 AM Jay via RE-wrenches <

[RE-wrenches] Large transformer losses

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. hammond SG3L0075PE I’m just curious about it. The situation is 240vac grid at the street, 600’ to the house 400 amps. Why 400 amps on a house w

Re: [RE-wrenches] Large transformer losses

According to the nameplate 6% @ 170°cOn Apr 26, 2024, at 4:33 PM, Darryl Thayer via RE-wrenches wrote: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 i

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

Maybe the new 5kw 120v unit is the 8kw at 120v?JayOn May 3, 2024, at 4:22 PM, Tom McCalmont via RE-wrenches wrote:David is correct.  We have some experience with Sol-Ark’s inverter, and it’s a good product.  However, be aware that you can configure it either as a 120V inverter with a max. output

Re: [RE-wrenches] 120 Vac and 12Vdc mixed distribution system

I wanted to follow up on this thread. According to the sol Ark website. The US 8 kw is rated at 120/240. Which I’ve always thought mean 3 wire. L1,L2,N. The US 5kw is 120v only. L1, N Do I have this correct?JayOn May 4, 2024, at 9:15 AM, Tom McCalmont via RE-wrenches wrote:It does not do split-ph

Re: [RE-wrenches] Bootstrapping and AC Coupled Sunny Island

Hi WilliamHave you talked to fortress about the SOC getting so out of calibration in such a short period of time?JayOn May 7, 2024, at 11:16 PM, William Miller via RE-wrenches wrote:Friends: I am still wrestling with problems integrating a Sunny Island / Sunny Boy AC coupled system to a set of 5

Re: [RE-wrenches] Bootstrapping and AC Coupled Sunny Island

A possible fix. You could run a DC relay on the SB PV input that would be voltage triggered to prevent the battery volts from getting higher than you want. The SI has 2 aux relays I think? Or could do a tristar with RD-1 relay that has 4 channels. Just a thought jay > On May 7, 2024, at 11:

Re: [RE-wrenches] Bootstrapping and AC Coupled Sunny Island

Hi William, Since the SOC isn’t being reliable maybe due to not charging correctly? I would recommend going to volts for the relay driver. Thats why I suggested the tristar with RD-1. Because really volts at full is the most accurate. Not knowing how many PV inputs you could do a cascade. jay

Re: [RE-wrenches] Bootstrapping and AC Coupled Sunny Island

HI William, Yes the FM-100 has no problem with keeping the volts pretty tight and i’ve not heard of any lithium related issues, and someone is bound to chime in if there are. jay > On May 8, 2024, at 9:39 AM, William Miller wrote: > > Jay: > > I am considering ditching the Sunny Boys and

Re: [RE-wrenches] Fortress Avalon

It’s an interesting design. I went to a seminar on it. Wiring the main power distribution center, is a bit tricky with how they designed or not wire room. Probably want to use cobra wire.  The battery voltage design is unusual in that more batteries increases the voltage, not bad just different. We

Re: [RE-wrenches] Optics

I agree with you WilliamWhile there could be all sorts of valid reasons for the downtime. What’s not acceptable is the lack of communication and notification that it was going to happen or had happened.  If they do have new owners they are not starting well. JayOn May 18, 2024, at 9:42 PM, William

[RE-wrenches] UL batteries for open loop

HI All I got a call from a fellow installer who needs a UL listed lithium battery. Say 30-50 kwh. open loop as its working with existing OB radians. Could be outside or inside It so confusing to find the right battery I’d thought I would ask what folks are using/recommending. thanks jay ___

Re: [RE-wrenches] UL batteries for open loop

sting results allow that.Dan FinkOwner, Buckville Energy Consulting LLCIREC Certified Instructor for PV and Small Wind InstallationNABCEP Certified PV System InspectorNABCEP PV Associatedanbo...@gmail.com970-672-4342 On Mon, May 20, 2024 at 5:22 PM jay via RE-wrenches <re-wrenches@lists.re-wren

Re: [RE-wrenches] Optics

as reported in cost of goods sold.To say I am curious about what is going on is an understatement. Aloha,Lou Russo Ownerl...@spreesolarsystems.com808 345 6762Spree Solar Systems LLC CT-34322On Sun, May 19, 2024 at 2:21 AM Jay via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:I agree w

Re: [RE-wrenches] UL batteries for open loop

has 3 vaults and a Radian. JohnOn Mon, May 20, 2024 at 7:22 PM jay via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:HI All I got a call from a fellow installer who needs a UL listed lithium battery.  Say 30-50 kwh.  open loop as its working with existing OB radians. Could be outs

[RE-wrenches] Outback

I was talking to signature solar today. Signature solar and EG4 are sister companies. I don’t have info if one owns the other or if they are equal partners? They did admit they bought OB. But didn’t know if signature or EG4 bought them. Jay ___ List

Re: [RE-wrenches] Outback Tech Support

Hi Drake, What it says to me is that they either fired everyone or said move to tx. I’ve always joked that if the potential project I’m to work on starts badly it never gets better. I still don’t understand why the owners of EG4 would by a legacy inverter company? Jay > On May 24, 2024, at

Re: [RE-wrenches] Water system with Grundfos SQFlex

Hi Brad With 2 check valves leaking I’d look for a broken pipe or a corroded fitting. If there is anyway to isolate between the 2 check valves then you could measure the pressure drop on both sides which should point to the direction of the leak. Jay > On May 25, 2024, at 7:41 PM, Bradley B

Re: [RE-wrenches] Water system with Grundfos SQFlex

  Dave Angelini Offgrid Solar "we go where powerlines don't" https://offgridsolar1.com/ e-mail offgridso...@sti.net text 209 813 0060 On 2024-05-26 4:26 am, Jay via RE-wrenches wrote: Hi Brad With

Re: [RE-wrenches] Water system with Grundfos SQFlex

Hi Brad, Here is the link. https://www.supplyhouse.com/Boshart-SSMAXL-100-1-Stainless-Steel-Male-Insert-Adapter-Extra-Long?utm_source=google_ad&utm_medium=shopping_neutral&utm_campaign=Shopping_Neutral_New_users&gad_source=1&gclid=Cj0KCQjwu8uyBhC6ARIsAKwBGpQPie_fqna9Gi5uV3xJmRp-HuZVqG0d3rDUmMZSA

Re: [RE-wrenches] Water system with Grundfos SQFlex

And of course using a torch to soften the tubing just enough so that the barb fitting can insert and then grab into the plastic with the clamps. For 1” its not needed but helpful. For 1.25”- 2” its needed, or at least I’ve never been able to get a solid connection without heat. Jay > On May

Re: [RE-wrenches] Water system with Grundfos SQFlex

Hi JerryWhat equipment are you using to pull steel  from that depth?Jay On May 26, 2024, at 3:18 PM, Jerry Shafer via RE-wrenches wrote:Hey wrenchesWater leaks in wells, I just pulled my well pump out at a mere 390 feet, older galvanized 11/4 « steel, where the Water rose and dropped the pipe was

[RE-wrenches] offgrid solar installer in anchorage/SE alaska

HI All Any recommendations for a off grid installer in Anchorage or SE alaska? Pls contact me off list thanks jay ___ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenche

Re: [RE-wrenches] Water system with Grundfos SQFlex

HI Brad, Is this off/on grid? And are the two wells near each other or they just join up at the tank and float switch? If you’ve got the power then I’d install just a standard AC centrifugal pump. Sure uses more power but lasts forever. And is maybe $500 vs $2500 And you’ve said minimal water

Re: [RE-wrenches] Discover AES exposion

That is fantastic service!  And it also confirms  that LFP batteries are actually capable of the same explosive energy ( even more actually) as NMC contrary to the claims made by many that it’s impossible. While I’m using LFP batteries in most systems, it does scare me much more than Lead. JayOn Ma

[RE-wrenches] Discover rack mount battery connectors

Hi all I’ve noticed that many batteries are now using a different type of battery connector. Almost like a kind of MC4. It has a positive locking mechanism. Discover, EG4, and others. I’m wondering if anyone knows if they are universal or specific to each brand? And is there a name for this t

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