[RE-wrenches] Lead placment and length on new PV Panels

Friends: I have been designing a large-ish off-grid system over the last few weeks. This will be our first off-grid system to require MLRSS. We chose the Tigo TS4-A-F system. In order to make certain the Tigo will work with modules that we can get our hands on, we brought in a few samples to

Re: [RE-wrenches] Water Pumping 24/7

Wrenches: I found some on-line pump HP calculators, such as this one. Plugging in 1 gpm of water pumped to 300 feet elevation results in 0.1 HP, not 5. I have no idea how Daryl arrived at 5 HP. Plugging in the 10 gpm we want, the HP requ

Re: [RE-wrenches] Sol-Ark install

Ron: I apologize if I am underestimating your level of skill or experience. Feel free to correct me if I am wrong. However from the extent of the questions you are asking, it seems like some solar design and vocational courses might be in order. Without a solid background, no one should be des

[RE-wrenches] Water well telemetry

Friends: Can anyone recommend manufacturers of equipment for remote telemetry for Ag wells? Thanks in advance. William Miller -- William Miller Miller Solar.com 895-438-5600 www.millersolar.com ___ List sponsored by Redwood Alliance Pay optional mem

[RE-wrenches] Radian, Blue Planet and SMA 21 series AC coupled

Friends: We are setting up our first Blue Planet system. It is AC coupled with an SMA SB7-21 back-feeding a Radian 8048.We followed all of the recommended settings when commissioning. The battery SOC is chronically stuck at 90% as displayed by the Blue Planet BMU. I think the problem is

[RE-wrenches] Optics will not accept remote programming

Friends: I installed a Radian AC coupled system a few months ago. We are trying to dial it in to work with a Blue Planet battery system. I cannot make any adjustments remotely through Optics. Once in a while if I reset the gateway I can change one setting, but rarely does it succeed. The li

Re: [RE-wrenches] Optics will not accept remote programming

fore, make sure that everything has the latest firmware. > > Otherwise, I wouldn't know where to go after that. > > Cheers, > Kienan > > > *Maxfield Solar* > *maxfieldso...@hotmail.com* > * (801) 631-5584 (Cell) * > -------------- > *From

[RE-wrenches] AC Coupled Tesla system

Friends: I have two questions about AC coupling Tesla systems: 1. Are there limits on how much power can be AC coupled through a Tesla gateway? Does it depend on the quantity of power-walls connected? 2. I understand a Tesla system does not have a separate generator input so if a genera

Re: [RE-wrenches] OB Radian question

Kirk: You need a place to install OCPDs, Negative and other bussing, shunts , AC distribution and an FNDC if you want one. I recommend using all the matching BOS hardware. In the old days installs were far less robust or elegant without it. This is not a place to pinch pennies, in my opinion.

Re: [RE-wrenches] wire management on Qcell AC module

Wrenches: Consider the vector forces , even with just the weight of the wire itself. Suspended leads are going to strain the connection points. I suggest this approach is not a good solution. William Miller Solar 17395 Oak Road, Atasc

Re: [RE-wrenches] wire management on Qcell AC module

Dave: Could you send a photograph, please? Indeed this problem has been addressed before. The only solution presented was to add jumpers to lengthen the leads so they could be clipped to the module frames. This method is sub-optimal due to cost and the adding of potential failure points.

[RE-wrenches] Outback FXR: Battery voltage exceeds settings

Friends: I maintain a system with 16 AGM L-16 batteries. Eight were installed in September of 2021 and 8 were added in March of 2022. This is 5 months apart. I have understood that when you install a string of batteries you have one year in which to add another string before the first string

[RE-wrenches] Battery Temp compensation

Friends: I am curious if any of you change the temperature compensation values for charge systems in lead-acid battery systems to comply with a battery manufacturer’s specifications. Doing this would require that you drill down into the technical literature to find that value and then have inve

Re: [RE-wrenches] Abandoned equipment

Jay: I am sure you are regulated by the same laws that govern any repair shop. Check your state's consumer protection web site. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 -Original Message- From: RE-wrenches [m

Re: [RE-wrenches] 26% to 30% ITC for 2022?

August: Could the term “standalone” refer to systems not connected to the grid? They are still out there. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org

Re: [RE-wrenches] Has anyone ever had one of his customers get a note from SolarEdge like this one?

Scott: I can’t help with advice on the particular technical issue. I can sympathize, however. This communication to the client is most unfortunate and really bad contractor relations. You can communicate with your customer to clear up misinformation, but it is hard to undo this kind of dama

Re: [RE-wrenches] Large current battery combiners, UL Listing

Mac: Getting listing on something as specialized as you are talking about may be difficult. I would turn to the telecom industry for solutions. Here is one link I found. Their product line is pretty sexy and it is li

[RE-wrenches] Shipping costs

Friends: I am sure all of you are aware of the skyrocketing costs for shipping. I get it that fuel prices are up and I want truckers to all earn a fair wage. However I can help but feel there might be some gouging. For instance, a $900 order for rail was quoted at $4,200 for shipping from Ore

Re: [RE-wrenches] Shipping costs

t; >> I hope your items arrive in excellent condition!! >> >> >> >> Maverick >> >> >> >> >> >> Maverick Brown >> Off-Grid Solar Commander since 2006 >> *Maverick Solar Enterprises, Inc.* >> >> * • Solar Commander Remot

[RE-wrenches] Simpliphi with SW inverters

Friends: I have an elderly client with a dual SW system and group 8 AM batteries. Due to a generator and charge control failure the AGMs failed after just 3 years. I don’t blame the batteries, they were likely chronically undercharged for some months. The client wants to consider using Simpl

[RE-wrenches] Integrating Lithium batteries with legacy inverters.

Friends: This is a follow up on the question I asked about anyone having actual experience integrating Simpliphi batteries with a Trace SW inverter system. I read the battery and integration manuals carefully and spoke with Simpliphi tech support. The systems are absolutely compatible but on

Re: [RE-wrenches] partial data loss Mate 3s

Mac: I’ve seen a Mate 3S reprogram stacking on its own. After firmware update it stopped happening. Make sure you set unique password or tech support will blame your customer. Good luck. William On Tue, Oct 25, 2022 at 9:12 AM Mac Lewis via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrot

[RE-wrenches] Need two wire submersible cable

Friends: I am looking for cable appropriate to connect a low water sensor. It is two wire, low current. 18 to 14 gauge would work. Does anyone know where I can source such an item? I need only 150’. Thanks in advance for your help. William -- William Miller Miller Solar.com 895-438-5600 www.

Re: [RE-wrenches] SMA without WiFi

Jeremy: If the device you want to connect to does not have Wifi capability then you don’t need an extender, you need a station device. The unit will receive via wifi and convert to a wired Ethernet cable. I recommend the Ubiquiti nano-stations. https://store.ui.com/collections/operator-airmax-dev

[RE-wrenches] Need two wire submersible cable and water pump miscellany

Friends: Thanks to all of you that offered suggestions. I found what I needed for this project: Nassau National Cable offered a two wire, 14 AWG CU tray cable. Attached is the data sheet if anyone is interested. The vendor can be found at: *www.nassaunationalcable.com

Re: [RE-wrenches] Large current battery combiners, UL Listing

Colleagues: I am gearing up to tap some more copper. I assume this is a pertinent subject since bus bars are going to be needed frequently for any storage work. I bought the fancy drill press with the tapping function and I am setting it up. I ran a few tests and the functionality of the to

Re: [RE-wrenches] BACKUP system revival

Dana: I have never incorporated a transfer switch with a battery inverter. The inverter’s internal transfer relay with the smarts it provides has always been preferred. I have of course used a transfer switch for generator-only systems. In some cases the generator is rated smaller than the utilit

Re: [RE-wrenches] Old Trace SW inverter connected to the grid.

David: I investigated a grid-connected SW system in 2017. There were no GTI units in place. The sell function was disabled. The utility reported that back-feed was occurring. Upon further investigation it turns out the SW inverters were selling about 1 amp 24/7. I can’t remember if it was 1 amp

[RE-wrenches] Utility transformer limitations

Wrenched: Merry Christmas to those of you that observe such traditions, or substitute the winter festivity of your choice. I helped a previous employee install an Enphase IQ8 system on his home. He applied for the utility approval concurrently with his building permit The day he got his fin

[RE-wrenches] Shipping

Friends: A while ago I posted some questions about shipping. I know this is tangential to solar installation, but you can’t install what you can’t get. I got my rail but there were some hiccups. I thought some of you might benefit from my experience: I contracted for the shipping using S

Re: [RE-wrenches] outback FM-100

Scott: I don't know about lead items for other than Outback as that is what we are using on the jobs we have going. I show May as the delivery for Mate3ses (who names these parts anyway?). I have never liked integrated systems. Ever since I was a kid I preferred component stereo equipment becau

[RE-wrenches] Remote battery disconnects

Friends: We have a large-ish residential off-grid system install coming up. The AHJ has said they will require a remote battery disconnect. I suspect there will be fire sprinkler controls and a pressure pump that would become inoperable if this system were engaged. In this case we will apply

Re: [RE-wrenches] Remote battery disconnects

a RE-wrenches *Sent:* Friday, January 27, 2023 11:46 AM *To:* William Miller via RE-wrenches *Cc:* Glenn Burt *Subject:* Re: [RE-wrenches] Remote battery disconnects Does the AHJ really want the batteries disconnected from conductors, or does he really just want the inverters to stop operating and produ

Re: [RE-wrenches] Remote battery disconnects

tment solar consultants making a lot of money fear mongering, which has led to this type of situation. Chris On 1/27/2023 3:35 PM, William Miller via RE-wrenches wrote: Glenn: As I wrote, a DC disconnect is required. Here is an excerpt from the Q&A with the building official: 4. Will you

Re: [RE-wrenches] Remote battery disconnects

controllers > are under full load. > Many will blow up. Try turning off the battery breaker on a SolaArk when > the charge controllers are maxed, and see if you get lucky. > > On Sat, Jan 28, 2023 at 3:27 PM William Miller via RE-wrenches < > re-wrenches@lists.re

Re: [RE-wrenches] Remote battery disconnects

> On Sat, Jan 28, 2023 at 6:22 PM William Miller via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Esteemed wrenches: >> >> Well if my house is on fire and the entry of fire responders is delayed >> for lack of a disconnect, I choose

Re: [RE-wrenches] Remote battery disconnects

is what happens to the MPPT charge controllers when the Battery Disconnect trips when the charge controllers are under full load. Many will blow up. Try turning off the battery breaker on a SolaArk when the charge controllers are maxed, and see if you get lucky. On Sat, Jan 28, 2023 at 3:27

Re: [RE-wrenches] Solar and tenant billing

Bill: I’m not sure what you are doing is entirely legal. Tenants can only be billed for actual (measured) utility usage. This does not necessarily apply to your situation but it should be noted: Tenants must be billed at the rate the landlord is charged— no marking up the cost. I’d say anyone w

Re: [RE-wrenches] Remote battery disconnects

Kieran: You’ve got me confused with someone else. I do not pretend to know anything about Sol-arc. ( I do know if I was inventing electrical equipment I would not put “arc” in the name.) Wm On Thu, Feb 2, 2023 at 3:53 PM Kienan Maxfield via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote:

[RE-wrenches] DC Disconnect for first responders

Friends: Here is how this resolved for my upcoming project: I submitted a request to the building department to waive the requirement for a DC disconnect. I based the justification on the need to keep a pressure pump for the fire sprinklers and a fire alarm operational. I will supply an extern

Re: [RE-wrenches] Enphase ACM to rail mount plate

Mac: Maybe the SnapnRack MLPE flange kit is what you need? https://snapnrack.com/wp-content/uploads/2019/07/SNR_MLPE-Frame-Attachment-Kit-Installation-Manual_v.1.1.pdf William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 *F

[RE-wrenches] California NEM3 specific question

To my Friends on the Wrenches forum: This is a question that likely can only be answered by a California based grid-tied contractor. The subject itself may be of more general interest as it is demonstrative of a trend that has dogged the industry and may be more prevalent in the future. The su

Re: [RE-wrenches] California NEM3 specific question

> > > > Todd > > > > > > On Friday, March 3, 2023 8:46am, "William Miller via RE-wrenches" < > re-wrenches@lists.re-wrenches.org> said: > > To my Friends on the Wrenches forum: > > > > This is a question that likely can only be answered b

Re: [RE-wrenches] Cell phone based relay control

Jay: Control by Web. The hardware is robust. You can write code or use built-in functions. There is a smart-pone app or you can interface by browser. Here is a lin

[RE-wrenches] Trace SW remote display adapter

Friends: I am trying to help a client connect a Trace SW replacement display to a PS series inverter . I have done this once but it was using a stand-alone remote display (SWRC) that was packaged in a shallow enclosure with a

Re: [RE-wrenches] Attaching Array To or Through Ply

Friends: Thanks for bringing up this scenario. I have two problems with using a product such as the easy-feet or other deck-fastened brackets, particularly on a rigid foam-above-sheeting roof: 1. I worry about compression of the foam material over time. This could leave a void under the

Re: [RE-wrenches] replace part of rolls battery bank

Daniel: I feel your pain: In October of 2021 one of our off-grid clients had failed flooded L-16 batteries. We needed 16 replacement batteries and chose Rolls VRLA batteries. We could not get 16 due to supply chain constraints so we went for 8 with a back order for another 8. It took until M

Re: [RE-wrenches] Phased out Schneider Electric SCP

Chris: Respectfully: it’s not the same thing. Outback is not discontinuing the Mate. If you have an Outback inverter you need a Mate and the Mate accesses the FM100. Sure it would be better if the FM100 had a display, but there is a viable option in the Mate. William On Tue, Apr 4, 2023 at 8:

[RE-wrenches] Ski-ark without batteries

Friends: Can the Sol-ark 15 be installed without batteries in grid-tie mode? I have been told the answer is yes but I’d like confirmation. Thanks in advance. William Miller -- William Miller Miller Solar.com 895-438-5600 www.millersolar.com ___ List

[RE-wrenches] Sol-ark without batteries

Friends: Thanks for the replies on the subject. I was impressed that Sol-ark got back to me the next day and confirmed the answer is yes. We are well aware of the limitations of installing without batteries. The option provides several benefits, including meeting a filing deadline without

Re: [RE-wrenches] Truss finder

[image: Hammer | MC Systems] Plus [image: chiptoolz | Rafter Finder] Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Kristopher Schmid via RE-wre

[RE-wrenches] Straw bale wi-fi

I have install a gateway in an exterior equipment space outside of a straw bale envelope once and wi-fi reception was no problem. I think that every situation needs to be evaluated on it’s own, however. Checking with a smart phone is a good start. William -- William Miller Miller Solar.com 805-

Re: [RE-wrenches] problem using Radian on TOU metering

Darryl: Here are a few suggestions: 1. Don’t move to California. Those rates are unheard of here for many years. 2. Grid-zero. From the manual: In *GridZero *mode, the Radian inverter remains grid-connected, but prioritizes the use of battery or renewable sources to run loads. 3.

Re: [RE-wrenches] Open Delta to 208Y/120 Volt

Drake: You should be able to connect to a 120/240 split phase feeder. Avoid the stinger. I have done it with FXRs , works just fine. Wm On Tue, Jun 6, 2023 at 8:11 AM Drake Chamberlin via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hello All, > > We are looking for a transformer t

Re: [RE-wrenches] 2018 Residential Code Fire Setbacks

Rick: I think this is a state by state issue. From this article : “Building codes vary from state to state and between jurisdictions.” In all jusrisdictions in my part of California, the local Fire Marshal is the fi

[RE-wrenches] AFCI tripping on SB 4000US-12

Friends: We installed a bunch of Shell SQ-150-PC modules on a ground mount almost 20 years ago. The original SB2500 inverters died so we upgraded to SB4000US-21 inverters. We had some ground fault or AFCI issues a number of years ago so we replaced all homeruns with PV wire which resolved the

Re: [RE-wrenches] Parallel Homegrid Stack'd Busbar

https://millersolar.com/MillerSolar/Portfolio/Inverters/battery_iinverters/JP_Radian/JP_Radian.html Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *J

[RE-wrenches] Testing strings with Tigo

Friends: We are in the midst of our first off-grid, DC coupled project using Tigo TS4-A-F RSS switches. In my few years installing solar I am accustomed to testing PV strings with a Fluke 87 for Voc, Isc, Vmp and Imp, or some combination. I do this regularly in the midst of installing PV so

Re: [RE-wrenches] How to make PV Watts calculate solar on north facing roof

Darryl: Set Azimuth to 0 degrees: William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 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, Ju

Re: [RE-wrenches] 200a manual xfer switch w/ small aux contact : who makes it?

Mick: Square D offers a set of auxiliary contacts on the double throw switches. It is ordered by adding a suffix to the model number. Check the footnotes in the Digest. My supplier at CED can hook you up and arrange a drop shipment. Eddie Jensen at 805-543-4700. Be careful though, these are micro

Re: [RE-wrenches] Charger recommendations

Ron: If your client has a large battery bank and the inverter/charger cannot deliver enough charging amps, maybe your client has the wrong inverter/charger. Tacking on accessory equipment complicates an installation. There is a reason integrated inverter/chargers are popular. They all have

Re: [RE-wrenches] Power conditioner for Trace inverter

Friends: I had an experience with a more modern inverter system creating harmonic distortion on the output waveform during generator run. That issue was documented here . The inverter system is Outback Radian.

[RE-wrenches] Sunny Island/Fortress E-vault

Friends: I am commissioning an E-vault battery array to an existing SMA Sunny Island System. Does anyone have any experience with this they could share? Thanks. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 ___

Re: [RE-wrenches] GT w/ BB

Storm Copper has tables. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Tue, Sep 19, 2023 at 7:13 AM Jay via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Thx Michael > > How do you calculate buss bar size? > Is there a specific formula or table I can find? > >

Re: [RE-wrenches] Sunny Island/Fortress E-vault

some basic electronics to make it work > correctly, you will need to remove the ttemp sender and make a > resistor pack to simulate the 77 degree reading otherwise it will not > charge properly, for the first one I used a breadboard to set the temp for > what I wanted to see then

Re: [RE-wrenches] Sunny Island/Fortress E-vault

erwise it will not charge properly, for the first one I used a breadboard to set the temp for what I wanted to see then build a more solid state shrink wrap resistor. Doing this will prevent undercharge by the SMA and your customer will be happy to see the full state of charge at the batteries. Old

[RE-wrenches] Sunny Island remote alerts

Friends: How can one read error and/or warning code either via Sunny Portal or port forwarding a Webbbox? I can see charts galore on the Portal but I can’t find error or warning logs. Also, I get alerts via email but they are vague, as in “3xx” or “7xx”. Apologies if this is a dumb question. W

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

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 off. I checked the mini-grid frequency and it does ramp up to about 62+ but apparently not soon enough to curtail

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

RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > What is the array size vs the battery size? Sounds like a big array on a > small battery for the voltage to go that high that fast. > > Ray > Remote Solar > On 10/21/2023 5:46 PM, William Miller via RE-wrenches wro

Re: [RE-wrenches] Schneider Tech Support

Vince: My notes indicate: (833) 391-8640. Wait for menu options and press 8. It’s been a while since I called. I am not impressed by the product line or tech support. Good luck. William Miller Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA L

[RE-wrenches] Sunny Island AC-Coupled system integration with Fortress E-Vault

Friends: This situation is as yet unresolved. It is complicated enough I created a web page to describe the scenario so I did not have to explain it over and over. I submitted this to Fortre

Re: [RE-wrenches] Schneider Tech Support

What is the magic extension number? William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Tue, Oct 24, 2023 at 11:24 AM Dave Angelini Offgrid Solar via RE-wrenches wrote: > Some of you folks are using really old Phone info.The number changed > almost 3 years ago I believe. >

Re: [RE-wrenches] Outback Radian Generator Charging

Amos: At the risk of stating the obvious: The batteries have to be ready to accept maximum charge. They need to be in good condition and fully discharged. Max charge amps will occur only briefly then the charge rate will start to taper. Your charging settings need to be correct including tem

[RE-wrenches] AC Coupling

Friends: I am starting to get the impression that there is a diversion on the understanding of the definition of AC coupling within the industry. I think this definition needs to be clarified. Below is a diagram of what I understand is a DC coupled system (I hope these diagrams come through)

Re: [RE-wrenches] AC Coupling

On Oct 28, 2023, at 2:15 PM, William Miller via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote:  Friends: I am starting to get the impression that there is a diversion on the understanding of the definition of AC coupling within the industry. I think this definition needs to be

Re: [RE-wrenches] AC Coupling

t with solark and sort of with outback they use the gen set input to the inverter, do the freq shift and charge via a preset voltage. This seams to work well but if you connect a genny it must be on the grid input via an ATS, alot more complicated the any DC side connection. Funtimes On Sat

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

George: Appliance manufacturers have their own requirements that are not the same as the NEC requirements. As long as you are not modifying the manufactured assembly you are not responsible for compliance of that appliance. By appliance, I mean the solar module, microinverter, etc. William

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

Friends: I am still working on getting the E-vaults to play nice with the Sunny Islands and Sunny Boys. With Open loop I was getting significant discrepancies in the reporting of SOC in the e-vaults versus that reported by the SI inverters. This discrepancy did not diminish over time. The d

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

Regarding the SI Inverters,for me it works best to eliminate the bat temp > sensor and put in a resister set to be 75 degrees, this will prevent the > charger over under charge issue. > Fun times > > On Sun, Nov 12, 2023, 12:36 PM William Miller via RE-wrenches < > re-wrench

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

shuts off? Jay On Nov 12, 2023, at 2:35 PM, William Miller via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote:  Jay: Good question. I assumed some kind of FET circuit but that is only my assumption. However an open relay exhibits some fairly high impedance. The sy

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

Bailey k...@abundantsolar.com On Sun, Nov 12, 2023 at 2:36 PM William Miller via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: Jay: Good question. I assumed some kind of FET circuit but that is only my assumption. However an open relay exhibits some fairly high impedance.

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

uccess." - Sadhguru > > On Nov 12, 2023, at 10:51 AM, Jerry Shafer via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >  > Regarding the SI Inverters,for me it works best to eliminate the bat temp > sensor and put in a resister set to be 75 degrees, this

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

ll be an atmosphere for success." - Sadhguru >> >> On Nov 12, 2023, at 10:51 AM, Jerry Shafer via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>  >> Regarding the SI Inverters,for me it works best to eliminate the bat te

[RE-wrenches] ESS in attached garage: Heat or smoke detectors

Friends: We are installing an off-grid power system in an attached garage with VRLA batteries (UnigyII). I need to show compliance with California Residential Code section R328.7. That code language is below: *R328.7 Fire detection.* Rooms and areas within dwelling units, basements and att

Re: [RE-wrenches] Fortress remote monitoring

Friends: The Guardian app does not provide any historical data. Fortress says they are working on that. They claim that on request they can provide historical data but the one time I asked there was an hours-long gap in the data at the exact time I needed. Maybe Rose Mary Woods’ incarnation i

Re: [RE-wrenches] Enphase Gateway causing lamp to flicker

Adam: I have experienced the same scenario some years ago with an oval gateway. We tried some filters but they did not help. We did not have an isolated load center for the gateway. I think the client bought a new lamp without touch control. You need to connect the gateway and inverter to an

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

Drake: I tried running 48 VDC muffin fans on battery voltage. They failed. I switched to a Dc-Dc converter (12 or 24, can’t remember) from digi-key and problem solved. Point being battery voltage ranges may be too extreme for some components. William Miller Miller Solar.com 805-438-5600 www.mil

Re: [RE-wrenches] Automatic load control

Howie: Segregated load distribution. Simple, automatic. I don’t get why they put 200 amp pass-through on an inverter that can only produce 62.5 amps. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Thu, Dec 14, 2023 at 6:37 PM Howie Michaelson via RE-wrenches < re-wrenches

Re: [RE-wrenches] SMA String inverters

Jeremy: We generally avoided using the 41 series inverter for reasons specified here . If you find a new string inverter in the SMA lineup, you might want to check to see if they have resolved some of

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

Friends: I got a call from a client inquiring as to why his generator was starting every morning, even though no one was staying at the property and there was decent, albeit winter, sunshine. While looking into it I noticed that when his generator did run the battery voltage did not stay at a

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

te these as >> closely as possible. >> >> One thing I've noticed when I'm following up others work is that the >> majority have incorrectly wired/programmed Flexnet DC. They will not have >> the appropriate shunts activated and so the system constantly re

[RE-wrenches] Recommendation on DC Breaker/Musings on PV disconnecting/Tigo warning

Friends: I am not familiar with the inverter cited and I am not going to take the time to research it. There are too many options this day to keep up! If this system requires load disconnecting, a touch safe fuse holder is not the correct device. They are not rated for load break. A work-a

Re: [RE-wrenches] State of Charge Meter for Sol-Ark

Jason: I am careful about getting my clients too dependent on SOC readings. SOC is a calculated value based on changing variables and is notoriously inaccurate. Below is a screenshot of the Optics reporting for a client. The graph line that begins as the lower of the two is the SOC, the oth

Re: [RE-wrenches] State of Charge Meter for Sol-Ark

Jason: EVs apparently have their own problems with metering: https://www.caranddriver.com/news/a44754199/tesla-range-display-estimate-tested/ William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985 *From:* Jason Szumlanski [mailt

[RE-wrenches] Deka Duration

Pals: Anyone have any experience with this product, good or bad? https://www.mkbattery.com/products/energy-storage#deka We have had excellent results using their flooded and valve regulated lead-acid batteries. William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600

Re: [RE-wrenches] Fwd: Re: Cantilevered array

l via RE-wrenches > > wrote: > > I've done a fair amount of roof mounted solar structural compliance, and > I would say that the cantilevered design looks like a disaster waiting to > happen. You could not use conventional solar racking products. Chris > > > > On

Re: [RE-wrenches] Fortress

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 responsive. There have been a few days where I could not get through to technical support but with persistence I always manage. Fortress has

Re: [RE-wrenches] Fortress

*From:* Jay [mailto:jay.pe...@gmail.com] *Sent:* Thursday, February 15, 2024 5:50 AM *To:* will...@millersolar.com; RE-wrenches *Subject:* Re: [RE-wrenches] Fortress Hi william Could you share the equipment used and what issues you had? Thx Jay On Feb 14, 2024, at 3:13 PM, William Mill

Re: [RE-wrenches] EG4 Equipment

Drake: I prefer the UnigyII VRLA batteries. Full river 2 volt L-16s are pretty good and they allow one string configuration in larger AH settings. I agree that as features grow so does complexity. However there is no substitute for good remote monitoring and control. I can understand much

[RE-wrenches] Adding customer to Optics RE system

Friends: This is a subject that has frustrated me for a long time. I have asked Outback Tech support but none of their people do this because they are not customers. I will connect anew system to Optics and send the client an invitation. The customer creates and account and then is directed

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