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Was the sky crystal clear or was it partly cloudy?

What is an

SOC as reported by the BMS in each battery. Charge the whole thing as configured to at least 55.6 volts to reset and coordinate the BMSs. Hmm... just noticed SA is not reporting pack voltage. You need to put a multimeter on the packs to determine a baseline.

No one HERE is saying that. Where exactly did you hear this "common" recommendation?

What are these? Never heard of them. Hang out on the forum and do lots of reading. Watch some of Will's videos. https://youtube.com/@WillProwse?si=bi8SSjUrv2Kj3RUb Watch some of Andy's videos. https://youtube.com/@OffGridGarageAustralia?si=r41lRbPs4rlJ_dqZ

Provided that they are all the same chemistry and the same nominal voltage, YES. Physics.

Looks great 😃.

I use 55.6 (13.9), 60 minute absorption, and 49 (12.25) as my operating voltage range. There is very little usable capacity outside this range

I have done something similar. Inclination matching latitude. 3 strings pointed 155⁰ and 3 strings pointed 205⁰. I sacrifice absolute peak power at 12: 20 p.m. ( my solar noon) for a wider production curve. The array wakes up earlier and lasts longer in the afternoon. All 6 strings to a 6 to 1...

Look at the name of this forum. D I Y = Do It Yourself. It seems to ME that you are asking on the wrong forum. You say you're designing a utility scale solar project but asking pretty basic foundational questions in your post. Do they have Google in India?

If if he was able to pull the wire from the crimp, the crimp was bad in the first instance.

Open the junction box. Carefully remove any potting material (like caulk). Unscrew the old crimp lug. Clean the mating surface. Cut back the cable end. Strip. Crimp new lug Wipe with isopropyl alcohol. Reattach with screw. You cannot reinsert a wire into a crimp lug. That will never ever work.

No, you don't have the settings set correctly. User error.

Mine does.

Will's 3k inverter is ~ $700. Weighs about 25 pounds. Sol Ark is ~$7000. Weighs about 200 pounds. So, I don't think it is remotely reasonable to expect anybody is trying to put Sol Ark capabilities into EG4 3k box. Probably not possible.

Measure each with an independent meter. DMM. These devices are not NIST calibrated.

..Or... that's the max the solar panels can produce.

Yes.

This is a math question that requires specs of existing panels, specs of new panels, and specs of the 'inverter'? to which they are going to be attached. Is this a grid tied system? Does this system have batteries?

IRS Form 5695. ...Costs. For purposes of both credits, costs are treated as being paid when the original installation of the item is completed... Completed. Ie commissioned. You can't get a tax credit for a pile of solar stuff you bought this year if you don't hook it up and make it work...

Yes. Using the rs 485 (Bluetooth port) with this converter. https://overkillsolar.com/product/usb-module-for-bms/

Hmm

Everything has been covered above except I would use ¾" marine plywood.

What? The inverter is turning off on low voltage not because it was commanded by some closed loop something something. And Opie thinks he's still at 73%. I'm saying that's not correct. SOC is an overlay to make it easy for people to understand percentages the underlying actual science of physics...

When was the last time you saw 14 volts or better? I think your shunt needs calibrated. 13.09 volts is definitely not 73%

Or Solar Assistant.

With an actual torque wrench? Or just a visual perusal?

Been saying that for about an hour now... Gonna do it or what?

The only voltage drop you need worry about is between the terminal and the bus bar. No current should be flowing through the bolt.

I have 5920 watts of used panels. Last 12 months they've produced 5.8 megawatt hours. My calculations put these at about 88% retained capacity. Especially if you can pick them up locally, I think they're a great deal. I got mine from a local solar installer.

The charge curve is logarithmic at the top and bottom. You DO need to charge above 14v to allow such a low current balancer to have ANY effect, particularly on 3 cells paralleled. With this chemistry, voltage is NOT an indication of SOC. And balancers work on voltage. You can have 2 cells at 3.3...

It's all been done before. It's all been asked before. The answer is exist. I tried to steer you to a guy that has over 300 videos exploring all aspects and charging voltages and current flows and mismatched paralleling in all sorts of stuff in 300 videos on lfp. But you're too busy to accept...

Watch and learn. Whatever dude...

Go watch those videos. This betrays your ignorance of the chemistry. Cell imbalance only exposes itself in the upper part of the knee of the charge curve. Charge curve for this chemistry at the margins is logarithmic.... In a logarithmic area is where you do cell balancing, not in the fat flat...

Right but if you zoom in on sunshines graph, you will notice that at 13.6 volts it required over 5 hours of absorption to get full. So first it required time to charge to the voltage and then it required five more hours to fully saturate the cells at that voltage 13.6. the sun isn't up for that...