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That makes sense. Thank you for sharing. You have a sweet shop !

Yes, yes, yes. Getting the added "free HP" of an AC coupled system already in a 3 phase architecture is something I have been looking at. If possible I would prefer not to have $10k+ tied up in inverters, but I'll do it if I have to. Signature solar has some well priced 3 phase grid tie. I...

yes i know. Besides the expense I would still need an autotransformer to get 120 or 240 from the 3 phase system. There are many ways to design the system. I'm looking for insight on whatss best.

I think a 3-phase Sunny Island system will work with any number of Sunny boy, not just multiples of 3. So I wouldn't AC couple 3 SB 10k 208v to 3 SI6048? Why is that?

I ran across this SMA SI webinar and I'm concerned a bit about a cluster of SI's only being able to work with up to 3 batteries otherwise facing potential equalization issues . I am actually planning to build a 42ksih KW battery pack consisting of 3p 16s 280ah CATL LIPO cells. But I don't like...

I'm not sure if you saw my last post but I was able to get two new open box 6048 for $5k plus shipping. I'll let you know how the install goes. cheers

Can anyone give me some info and maybe help me trouble shoot this thing. Anyone know what the dip switches do? It arrived charged at 52.5v. It seems to take a long time and a lot of power to but it fully charged. Which 16 x 3.65 is 58.4v. Please lmk if I am mistaken. The BMS shuts the...

Yea I forgot for a minute that the grid tie inverter needs to see the AC from the off grid inverter in order to work. What made you recommend the tripower over the sunnyboy since the tripower will require a transformer to work with the 208 sunny island? You asked before if I have a VFD, yes I...

The seller of that SMA Tripower is really close to me. So that is cool. I'm getting a little lost. What's the benefit of the 3 phase grid tie if I am still using the 3 off grid inverters to power my loads and I still have to buy a huge 3 phase transformer. How efficient are those? Do the...

I ended up buying 3x SI and 3x SB and 20kw of solar. I would only run heavy loads during the sunshine hours or with genny running. I know it would suck the batteries down super quick otherwise.

Almost all single phase GT PV inverters are 240V. They may include a neutral wire to independently measure L1 and L2 voltage, but only deliver current to L1 & L2 - So they are two 120V legs? - That makes a lot more sense. Would it not be better to use the Tripower with 3 Euro SI 6048 240v so...

Yes my gen has two 20amp 120 outlets. I understand on what you are saying. Swap my 3 wire plug for a 4 wire, that makes sense. Most all of the "weird" transformers I try to look up are super expensive. How much did you spend for 3x transformers 277 to 120? I called SMA tech support to try...

I had a local supplier of Jinko panels message me. At 67c per watt they are a bit more expensive than some other panels I was looking at but it seems most of the Jinko panels meet the PID requirements. I've been learning more about the 120/208 three phase. It seems like most 240v appliances...

Yes I can easily break the pack apart. I will look for a charger that will allow me to charge the cells individually. I think that is a good idea, to break the pack down and fully charge each cell individually and install to a new BMS that I can actually get a manual for and program. I...

I don't have grid power currently but plan to have it in the future. I don't plan to sell to them. I would like a system that can support home and shop loads until I get grid power and also have the ability to either power a 20hp (15kw) 208/240/460 3 phase motor for a saw mill or charge a 240v...

This is getting a little more complicated than I had hoped, at least for me anyway. I'm still confused as to how something like a 240v single hot leg sunny boy AC couples into a say a Schneider XW6848. Does the Schneider have a special setting for that or do you have to use some type of...

All the cells read between 3.1 and 3.24 except one cell is 2.5. This cell needs replaced? Any insight on a good place to purchase one? The entire bank is showing 51v but the BMS won't allow the battery to "turn on". It's only sending 38v to the terminals.

My genny has 3 wires coming out of 240v, two 120v hots and a ground. So I guess that means the neutral is tied to the ground.

Maybe I didn't explain myself well. I'm still learning the different 3 phase configurations. The entire point of this post so to find the most cost effective and straight forward route to build this system. Two of the many options would be three 120v inverters for a 208v three phase system...