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That is a good question! That is the model my friend told me. I specifically asked if the model # has a -US in it, and he said no. BUT... here is the manual: https://us.growatt.com/upload/file/SPF_4000-12000_DVM-MPV_User_Manual_EN_202212.pdf Looking at it, page 2, it shows both 120 and...

Good idea. I've not had my hands on it yet, but will check impedance when I do. I don't know about EU model, but from what I'm reading, this is the version sold in Europe.

I'm helping a friend with his setup. He got this inverter from Growatt, which only has 240v-ac output, no neutral wire. He wants to get both 240v-ac and two 120v-ac legs from it. My question is if this unit has a bond between one of the hot legs and ground? Growatt units made for the US do...

From what I was able to find, it looks like they only work with Growatt batteries. Well, at least that is all that is officially 'supported'. It may be possible to trick it to work with others but I did not find anyone who has tried it.

Thanks SolarPrep. I'll contact him & see what is coming. (edit, I can't find that login, "The Colorist"... ?) Came across another option: Huawei SUN2000-7.5KTL-USL0 Anyone with experience with these? I'm seeing them on ebay, not sure if there are actual distributors. I've dug a little...

Not worried about heat. In fact this fellow just ordered a wood-burning stove. And I tell everyone that solar is a horrible solution for heat or cooking. Fan/lights/fridge/well are what solar is great for running. And no natural gas is available (out in countryside). And I can confirm that...

Thank you for all for the additional ideas. SolarPrep, I tried contacting Huayu, and have not gotten a response from their US rep. I asked who are their distributors in the US. Do you know who to contact? The Sol-ark 5k is quite appealing. But it's limitation is the AC coupling capacity...

I asked this as a side topic on another thread, but I thought it was meaningful enough to put here for future readers to find this topic. I am looking at the Growatt MIN series inverters to recommend for friends. The specs and pricing is fantastic. The 11.4kW version is under $1500. It has...

Well it just gets more and more interesting... Heard back. I'm told that the MIN series from Growatt only works with Growatt's batteries, the ARO series. They run $6600 for 10kW-hrs of storage... definitely on the expensive side. Anyone know if these work with other batteries, ideally DIY...

I found an interesting option, the Growatt MIN 7600 TL-XH-US (in the family, multiple sizes available from 3kW to 11.4kW). Very interesting. I like the specs on it... running two of these interconnected will give all the power required. And each unit is under $1500, add a few hundred for an...

There is a requirement for UL in this location, no question about it. I don't see where the Victron system has any real benefits. A short 2 year warranty, only 6kW inverter, and not UL tested/approved? Yikes, I'm running away from that. Compare that to Sol-Ark 12k, with a 10 year warranty...

Steve, Are you aware of systems failing because they were used this way? The unit that you suggested is a 120Vac unit, and it is designed to run in pairs to generate 240Vac (two 120V legs, 180degrees out of phase). In fact it appears that you can even take 3 units & generate 3 phase power...

Steve, I do like that option. The direct link to the inverter is https://watts247.com/product/lv6548-6-5kw-120v-solar-inverter-4kw-250v-mppt-bms-ul1741-built-in-wifi/ He needs a pair, 6.5kW @ 120v each, two give him 13kW @ 240v. $1600 each, so $3200. They do suck 80w at idle per unit, so...

He really doesn't use much. His house is all electric, and his monthly bill is about $100 (I saw the annual average). So call it $3.50 a day, or about 30-35kW per day. So even at 13 kW, he'll be over producing. However his son might put a place on the ranch, so that's what I think he's...

I thank the fellows who helped with the last configuration. But apparently all of my friends are thinking about solar, and another friend spent 2 hours talking to me about it yesterday. OK, currently he has nothing. He was going to spend $3500 just to install a 500 gallon propane tank to run...

Thanks guys. OK, it looks like the Outback SkyBox is the recommendation I'm going to pass to my buddy. $3k. 5kW solar capable. 4kW absorption (from enphase in grid-down situation) to charge batteries. AC couples. Puts the 5kW back onto the grid in normal conditions for self-payoff over...

OK, just to echo things. It's a 5kW inverter (sufficient). 100 amp output, so at 48v, we're talking almost 5kW. His setup is just over 8kW, but it is several years old... so let's say it's closer to 6-7kW of peak output. It is easy to disable his solar in 1.5kW banks, so that may be his...

Well fudge. In reading specs in more detail, I realized that the Sigineer model does NOT work with the grid. So it will not produce power onto the grid which is a problem. (I'm surprised nobody mentioned that!). OK, back to the list: $7k Sol-Ark 12k... full featured $3k Outback Skybox...

I can't argue with anything you wrote SolarPrep. Infrastructure across the US is crumbling as well. But none of this is addressing my questions. Does anyone have a better option than the Sigineer unit? $3200. 60 amps dc charging. Considering an external additional DC charger.

Ampster, I thought I did answer it. Basically, I don't want to waste power when in critical need. If I'm not using power, and the enphase inverters can produce it, I want all of that energy going into batteries. If it can take 4kW, and the enphase is capable of 8kW, then I will have to...

Hedges, that is good to know. So, if the enphase start putting out more power than the new inverter can take, they'll frequency shift the units off. So that will protect most equipment, but it effectively is the same as turning off half the existing array (8kW to 4kW), unless things are just...

Ampster, The issue is that the old panels are putting out about 8kW. The new unit needs to be able to absorb all of that and dump it into the batteries. An example. Hurricane hits, next day is sunny but no grid power. I flip all the right switches, and the new inverter is putting out...

Ampster, good point on the UL1741 vs UL1741SA. That cuts the 'other' solar support almost in half. And 80 amps at 48v is only 4kW, so that becomes woefully insufficient. He'd need two of them, which puts him back in the $6k+ range. Hedges, I've seen a few discussions questioning if SMA...

Ampster, I had looked at the Outback Skybox, and just spent another hour reading about it. 5kW solar input is sufficient. Price is fair. But I have yet to find how much power it can dump into the batteries! It does state that it can work with 7.6kW of external solar/inverters that are UL...

I do appreciate the replies. My apologies for not replying over the weekend, I was out of town with snail-speed internet. OK, don't worry about the batteries in either setup. We each have about 20kW-hrs of batteries at our disposal. With more available when we want it. Call it a blessing we...

Hi everyone, I've currently got a 8kW system with enphase micro inverters. Works great, but being in Texas, with the big storm this past year, I wanted to upgrade to being off-grid capable. So, I've added 30 more panels with a Sol-ark 12k inverter and batteries. It's working great. Now...