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One array is filled

Got the rails and the first 4 panels up. 445W Longi bifacials.

The most your wife will allow.

"Continuous AC power to load - 9000W" It's right there on the spec sheet.

The 8k can't be parelleled so you'd have to run them as separate systems. Also I choose option C: Two 15k

One of these days, those of us on this forum need to create an open source hybrid inverter.

I'll definitely consider them the next time I want overpriced grade B cells

I finally tilted the newest array from 0 degrees to the winter angle of 55 degrees. The first array is still at 40 degrees for now. On overcast days like today the 0 degree array would outperform the 40 degree one by about 10% but this new angle will be much better when there's direct sunlight.

If I wanted 2800Ah then I'd build 10 individual packs of 280Ah each with their own BMSs

Voc only happens when there is no current flowing, which means no voltage drop.

My measly 4.5kW and 1.65kW arrays are a bit undersized for my sol-ark 15k so I'm adding two more arrays of 18 panels each (400-450W bifacials, still need to buy). The rack will be constructed with some c channel pallet rack beams I got for cheap from Facebook marketplace and ironridge XR100...

The fact that it was an end cell makes it more likely that the clamping method was an issue

I posted my testing in one of the sol-ark 15k threads. TLDR: In off-grid mode, it had no trouble starting my 3Hp well pump (60+ starting amps) with my car already charging at 32A (240V), a 1500W space heater running on one leg, and 3 large chest freezers running.

The other server rack battery options are starting to look more attractive by the day

Use the proper wire and crimp it, no solder.

A little progress. All posts for the first array are now in the ground.

What are the first products that you'll be manufacturing in the US and when are they expected to be available?

Finally finished the conduit run from the first array to the closest point on the house. Used slightly over 200ft of PVC (junction box to junction box). I'm hoping to do the wire pull tomorrow, weather permitting.

Install them on the service lines going into the meter on the left (assuming the POCO doesn't know/care).

You need 3 AWG copper THHN for the grid connection

The 18k already has a breaker for both battery inputs so a fuse isn't really required

I used hole saws to make the holes in my wireway. I definitely recommend using a knockout punch instead.

You can't pull 50A continuous through a NEMA 14-50. That's why chargers that are made to plug into them top out at 40A. 48A chargers need to be hard wired to a 60A circuit. Also you only actually need 8 AWG copper THHN for a NEMA 14-50 plug (although I'd typically use 6 AWG anyways). Anything 8...

Lol I think I lifted those 90lb beams too many times today to understand humor

I think 18650batterystore has the highest chance of being actual A grade from what I've seen. I have a batch of cells arriving from there on Friday.

If it were me I would have added 1 more panel

I'm guessing that's the max near the lowest supported battery voltage. My 15k has no problem doing more than that.

The BMS in the EG4 batteries almost certainly can't be connected 7 in series

Let's wait for @Will Prowse review lol

The victron autotransformer can output 240V split phase from 120V input

It's time for Will to buy 100 acres of land in the desert to turn into a solar paradise

Sounds like 5 or more times as many problems

10 72 cell panels in a string? That's way too much for your climate. Even in my milder climate I only use 9 per string.

Took 2-3 hours to replace my LVX6048 with a 15k. The first thing I noticed is how much quieter the 15k is.

The amount of time I've waited to fill up in the last 4 years that I had my EV is a tiny fraction of how long I would have waited if I still had an ICE. And I've never worried about using heat or AC lol

I made a little progress. I added 3 more 280Ah seplos kits so I have a full stack now. I have communication working with the sol-ark so I don't have to deal with the crappy SoC estimation anymore. I also got the first post in for the final array but the ground is too wet again so it may be...

No one besides manufacturers recommend charging that high. They only do it so people don't complain about the capacity testing 1-2% low at more reasonable charge voltages.

I can't tell if this thread is some strange propaganda or someone forgetting to take their medication

Mine has hit 17.9kW from DC panels before. I'm not sure what the limit is but it's at least 18kW.

I'm sitting at 20.5kW PV and 82kWh in my main system currently, exactly 4:1. I'll probably add another 30kW of batteries and 10-12 kW PV in the next 1-2 years. Plus a 100-200kWh EV truck.

It can invert 15kW and accept 18kW solar input

$3k more for UL listing, 10 year warranty, and actual customer support is a bargain these days.

Because their energy density was bad. It's still not as good now but it has improved by quite a bit. Also cycle life isn't as important for most vehicles. 1000 cycles to 80% in a car with a 350 mile range is still over 300k miles.

3 of the c channel sticks are 5"x6.7 lbs/ft c channel about 9' 4" long. The rest are 6"x8.2 lbs/ft about 10.5' long. The guy I bought them from didn't have enough of the 6" so I have to make due with the 5" for 3 of the vertical posts. Panels are 40.866"x83.441".

They should start publishing efficiency curves for inverter output too

"What inverter upgrade? My old inverter had an issue so the installer replaced it."

My local strip club has a back room reserved for sol-ark owners

Real time monitoring would be a massive improvement over the 5 minute updates

Over the weekend we had a minor wind storm that led to two different outages. Thankfully I have enough batteries to get through these small outages easily. The problem wasn't the outages though, it was what happened for 1-2 hours after each of them. After the first one, the grid voltage was...

That's what I said but then I ended up spending $1k on their 1000A enclosure lol

No. That post must have been referring to the 12k.

Victron - 5 years Sol-Ark - 10 years Schneider - 3 years Whoops...

I never realized that there could be so many conspiracy theories about an inverter

These types of issues seem to be fixed in the 15k. I wonder what exactly fixed it.

400A is the becoming the norm now even for residential houses. I have one 400A service and one 200A service for my farm which is very much on the low end these days. The guy I picked up hay from earlier this week had multiple ~1000/gallon per minute irrigation pumps running. Those things use...

I finally hit the supposed max

Horizonal beams and ironridge L feet added today

A BMS isn't "recommended", it is required. At the very least get a cheap one or you'll keep killing your cells.

That is incorrect. The entire 18kW of PV input is usable (i.e. 14kW can go to the inverter while the other 4kW goes into the batteries).

The ground finally started to dry up so I began trenching. 50ft down, 150-175ft to go. I also attached a couple small pieces of unistrut to the post closest to the house for mounting the metal junction box. I'll put that up tomorrow if the knockout punch I ordered arrives before dark.

I finally finished all the conduit and wire pulls Wireless access point I'll start working on the second 8kW array in the next week or two.

I wouldn't really call it overkill considering you need to derate by 50% with that conduit fill

Most inverters specifically require that neither of the solar inputs be grounded

4 day round trip for me. I'll let FedEx do the driving.

The cells I received from them were flawless, but I ordered the grade A ones...

That's not a sol-ark

EG4 needs a dedicated QA person. $250k/year or whatever is cheaper than the loss of sales from silly bugs at launch.

Sol-ark 15k or 18kPV

I put those up so the sheep wouldn't mess with the wet concrete and haven't bothered to move them yet

They should have just left off that 12kW figure from the spec sheet because it's clearly just confusing people

You can fit around 289 10AWG THWN conductors in there without exceeding 40% conduit fill.

I think the "12kW of battery inverting power" spec is more of a minimum (when battery voltage is low). I've seen my 15k do 13kW+. Here is my 15k pulling 13.83kW from batteries, contributing ~13.04kW continuous to the AC loads.

It can depending on battery voltage

Definitely not required, although a good fuse might be able to interrupt a higher current than the breakers (I haven't checked the specs on the built in ones).

This happened during the last big ice storm here. 14 days without power and for the first half of that you couldn't get gas.

When I was younger I would have gladly done it for $3/panel and I'd be laughing all the way to the bank

Klein Tools 56334 Fish Tape, Steel Wire Puller with Double Loop Tip, Optimized Housing and Handle, For Heavy Duty Wire Pulls https://www.amazon.com/dp/B081TVYMJ4?ref_=cm_sw_r_apann_dp_WCB9HAHZQ1T7VA7GV75Y Premium Synthetic Polymer Wire and Cable Pulling Lubricant, 1-Quart Squeeze Bottle Klein...

That's what I'd expect too but I haven't actually tested it off grid much. 15.1/15.94 = 94.7% Seems reasonable to me. Also I've found that the displayed power measurements displayed by the sol-ark aren't always super accurate.

The fans on mine adjust quite a bit depending on the incoming solar and the loads. Also this unit does have a transformer.

You should set the inverter to stop discharging before the point that the BMS disconnects

It's to trap heat and make the panels less efficient

I checked the settings section of the app last week for the first time in months and noticed that it now allows you to set the "Max Solar Power" field to as high as 22500W. I figured it was a bug but I changed mine up to the max to see what happened. Previously my unit was hard capped right...

Similar engineered designs from Sinclair and power peak don't have anything to prevent twisting either besides the strength of the vertical c channel. We're supposed to have high winds over the next few days so I'll keep my eye on them.

I have 1125W connected to my AC200P (only 700W input). No issues.

I disagree. A surge rating of under a second is still very useful for indictive loads (which is what most large non-continuous loads are).

EG4 6kW inverter plus a few server rack batteries

For a 4S Lifepo4 battery, both of those settings are considered high. I'd go with 13.8V bulk charging and occasionally do maybe 14.2V to balance.

Now we need someone to come out with an AIO that can do 20-25kW in a single unit without needing high voltage batteries or three phase

You can transition from PV wire to that in a junction box at the array.

Earlier you said that ever other company names their inverters by the minimum continuous inverter output. I'm just providing evidence that you are incorrect. They are typically named based on their IDEAL scenario continous inverter output. If anything the sol-ark 15k can stay at its maximum...

Maybe I'm misunderstanding his plan but if I'm not then the all panels will be at the same angle but the whole array will be tilted 10 degrees EW.

He'll need to next size up for 150+ LRA

There is an option in the settings that specifies you connected a generator to the grid input

If you have two bonds in the house then the ground wire between the two will essentially just be like a parallel neutral wire (so current will be flowing on it).

Five 48V packs of the 624Ah cells would fit on here (barely within the weight limit): https://www.uline.com/Product/Detail/H-7679/Industrial-Steel-Shelving/Closed-Industrial-Steel-Shelving-48-x-18-x-75 Pretty small footprint for 159kWh

It can do it

NEC Table 310.17 shows 405A for 90C 4/0 Cu in free air

My sol-ark does that too when it disconnects from the grid (shows higher L1 than L2, but the total voltage is correct). It shows the correct values as soon as the relay closes again. Also you need to use both sets of battery terminals if you're gonna be charging or discharging with more than 160A.