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OK ... So I waited until this issue was fully resolved to give me thoughts. And now it is ... Most People do not share their success stories, so I wanted to give a thumbs up to Signature Solar for this resolution We purchased a Growatt 12kW SPF 12000T DVM MPV 250voc from Signature Solar...

Up until Last week I had never heard of pre-charging a larger inverter before connecting the battery cables. I just lived with the spark. But I was watching a "Will" video about a DIY LFP build and saw that he used a resistor before connecting the Positive Terminal. This peaked my...

Installing The Big Growatt SPF 12000T 12kw Inverter into a Cargo Trailer for a 12k watt mobile power generator. All the panels will be installed on a pole/post barn and I will connect the Inverter's Solar Charge Controller MPPT to the panels via 8 awg SOOW cable and Anderson Connectors. First...

Today was cleaning, feeding and care day in the hydro garden . Got everything dressed up for beauty shots. This little hydro system keeps the wife and I in salad and greens 3-6 days a week. All we want. I harvested 3 stuffed grocery bags off it Monday ... Cut all these lettuces to nubs, and...

THREAD INDEX: (Links Updated: 2/15/2024) This is a long Thread, So I have added this Index Note: Click the Post Number to Follow the link. The Topic discussion will follow from that Post TOOLS USED FOR DIY A/C INSTALLS Tools - 662 THE INSTALL General 1st 24k - 5 2nd 24k - 6 12k - 139 Nitrogen...

Been working on it and planning it for a while. And it just so happened to work out that the day I actually finished the job was also my Birthday ... today ? I have a single Midnite Solar Classic 150. For the past four years it has been just fine with a MS Classic Sizing Tool sized array...

I had a few little extra pieces of shrink wrap so I decided to wrap the tools that I commonly use around the Lifepo4 cells and terminals. Large heat shrink on the sockets A piece of heat shrink on the metal section of the torque driver And a composite ratchet round out my safety pieces I used...

This is a simple Unboxing and First Impressions of "EVE" 230Ah batteries I received from Doncan Technology (Shenzhen) Co seller @Amy Zheng. Purchased from their TX warehouse shipped to FL. I do not pretend to be as informed and knowledgeable about LFP batteries and their purchase as many people...

1000 Posts !! Who Cares Right? I must ask too many Questions, because I surely do not have that many answers. Thanks for all of you who have put up with me this long and thanks for tolerating my Posts Filled with obvious questions and occasional thread hijacking (hey it happens to all of...

I built my lil off grid system to assist my grid powered house 4 years ago. At the time People asked me was I was "Crazy", "You Need a Sanity Check", "Why would you build an off grid system for your house if you are grid connected AND your cost per kWh was about $0.11" . I was told I would...

Just got an email saying Docan has the Seplos Mason boxes selling them with or without cells. I was guessing they were not assembling the ones with cells, but it was interesting too me as I am about to start another project and might be building up a Dual XW Pro system with about 30 kWh+ of...

Planning to buy a Growatt SPF 48vdc 12kw 250. Already talked to Watts247 asked about over paneling. Said you can over panel the spf 12kw inverter / SCC. Real Estate does not matter. The array is going in a 10 acre pasture field The Growatt Manual says 7000w array and a max of 250vdc...

I had been asking in a different thread I did not start so decided to start my own thread I have narrowed my new LifePo4 bank size down to either an 8s 272 ah bank OR an 8s2p 564ah bank (8s 272 paralleled). I need 200 amp discharge and so picking a reliable yet affordable permanent install...

I searched and could not find much info about comparing these 2 devices. Are they TOTALLY different? My understanding is the MN SPD is probably not fast enough an EMP , but would the EMP Shield work as an EMP protection device (as it claims) AND a surge protector like the MN SPD?

So I'm Sitting here today laying out the cable design from my battery banks to the Inverter. Putting it all on paper helps me visualized how I will set it all up, and how many lugs I will need, what sizes, and what size cables, etc. But Boy! ... This seems like a boat load of connections...

I know when top balancing multiple cells in parallel the rule of thumb is to - 1st set the bench top power supply to 3.65v - Then connect the power supply to the battery posts , preferably with hi quality leads But when I do this and the paralleled group of cells is at a low state of charge...

I'm using 6 Awg SOOW cable for my AC electrical connections in my mobile cargo trailer build. Was going to use MC, but I thought the SOOW looked clearer. Problem I'm having is connecting the fine stranded 6 awg wire to busbars and screw terminals. When the screw bites, some of the the wires...

I was thinking about some of the larger (like a Growatt 12kw) AIO inverters/SCCs. The low frequency ones I've looked at seem to have pretty high idle consumption. (75-150 watts just being on, not in power saver mode ~ depending on who you ask) So if lower idle consumption is your thing, I was...

I would like to run a Mini Split in my bed room as a supplement to my 3 ton and 1 ton systems, but run the mini split off grid. Space too cool for the mini split = 285 sq ft. So 9000 btu would be about right. Needs to be Cool and Heat so looking at Heat Pumps. I have been running a gird...

I'm tinkering with the production of my 2 arrays - System is 24v with 2 arrays and 2 Classic 150s - Array 1: 9 REC 285w panels / 2565w total 3s3P / VOC 38.4 or 115.2v array input voltage to SCC #1 - Array 2: 9 REC 290w panels / 2610w total 3s3p / VOC 38.6 or 115.8v array input voltage to SCC #2...

Ok, so back here I built a precharge resistor setup with push button start for my Schneider SW inverter. I used a 100w 50 ohm resistor. But it seems improperly sized as the inverter goes into a surge and blinks on and off if I hold the button more than a second or 2. The SW is trying to start...

I'm adding another string to each array. Which means I will out grow my 2 Midnite Solar 3 sting combiners. I'm upgrading to a Watts247 8/2 combiner Problem is, all PV wires (strings) go into conduit and into the attic and into the MS combiners. But with the the addition, the existing PV wires...

I'm building out an array that needs to be +/- 7000w's. It will be off the ground about 5 or more feet in a field, so I might bennifit from a bifacial design. Here's the Dumb Question. When considering a 300w bifacial panel, is the watt rating for the front side only, or the presumed...

I have to stay in a Single Series String to keep the Array amperage in spec for the project. But .... If I install the array with all 6 panels facing the south direction, the lowest 2 panels will be in the shade part of the day. Panels REC TwinPeak 2 Rated Power: 375W Open circuit voltage...

OK so I just this weekend installed a Watts247 8 in / 2 out combiner Specs - 15 amp fuse on each of the 8 input string - 63 amp quad breaker on each of the 2 output groups Doing Some Temp Testing of this box now that it is installed Here is how the panels are connected The panels connected...

I need to make 110 ft runs from my panels thru my roof opening and to the combiner. Is there any problem with placing an MC4 connector just before the roof entry / junction box, or should I go for a continuous run of 10 awg solar cable? There will already be 1 MC4 connection at the panel so...

Capacity testing ... I'm Going to run the test again with a different setup

I have read everything I can find about roof top panel grounding. I have watched the Mike Holt video several times. I have read conflicting interpretations of the video and of roof top panel grounding in general on different forums. Owners manuals from Schneider and Midnite solar are also...

I have 2 48v 280ah DIY batteries. System has been up and running for several months no problem. The entire system (except Solar panels) is mounted in a cargo trailer and today, out at the farm, them moved the trailer. After powering everything down, moving the trailer, then powering...

I have seen where other people have had some trouble updating the firmware of the various Growatt units. What are the Pros and Cons of updating the Firmware? (other than the obvious “when you update you have the latest greatest”).