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So this is very interesting and likely the problem. I had the inverter setting 2 to 70A. Now it is set back to 10 on two separate but similar installations. This sounds like something is forcing the inverter to limit the amps at 10A and that seems to be what I'm getting. Anyone know what might...

Damn I love this site and all you guys who will help out. I think you may have gotten the issue. I went to Solar Assistant configuration to show you the settings and saw that it had max charging amps at 10A. My EG4 6500ex have setting 2 at 70A. Strange this is in conflict. Can Solar Assustant...

I doubt it is high as I have it in an air conditioned room. However, how do I get Solar Assistant to report that. Right now it says "no data". I just checked and can't find a place for the inverter to tell me either.

Ok, so I would call that 9s per inverter with no parallels? That is a testable hypothesis. I will give it a shot. Get 8kw running and see if the solar will support it. I'll be back to you.

I have two similar systems at two different locations that are acting the same. I'd love for someone to tell me what stupid thing I'm doing wrong. 36 panels 9s4p generating about 350v to 400v and rated for 455 watts each panel (ideally would add up to be 16kw) Panels are due south without...

I have two similar systems: 4 EG4 6500ex 10 EG4 Lifepower4 batteries 36 SolarEver 455w panel (9s4p) Generator backukp and 4 EG4 6500ex 6 EG4 Lifepower4 batteries 32 SolarEver 455w panel (8s4p) Grid backup On the second system (grid backup) I was getting error 61 when I read that setting-5...

I'm stumped...perhaps someone can shed some light. I have a USB cable and I'm fairly certain - from Signature Solar tech support - that I have the RJ45 end correctly wired with the black on pin 1 and the red on pin 2. Their old cable used the green and white pins but that evidently doesn't work...

You've gone a little beyond my paygrade, but I think I understand the idea. Limiting the inverters charge rate from the grid/gen would work as long as it has two settings: one limiting the grid's max and a different one limiting the PV max. Obviously, I want the PV max to be as much as the...

Thanks both of you for your comments!! I can't see the png image in Hedge's comments, but I've considered the interlock solution. But as you mentioned in your reply quoted above, it seems to me that charging the batteries at the same time as servicing the house would, almost by definition, be...

Can you point me to the transfer switch you are referring to?

I am building two homes that now have two similar solar systems. Each has four eg4 6500ex inverters (with pv and batteries, of course). One of these two systems is backed up by the utility and the other by a generator. My question is basically the same for both utility and generator backup...

Thanks everyone for your input. I see now, from the form filled out on WireSizeCalculator.net, where my error was. But, let me ask a different question then: Why pick insulation "open air" as opposed to "cable"? I chose cable and it leaps to a different gauge. What is the difference between...

I've just received a eg4 LifePower 48v 100ah battery. The spec sheet says it will serve up to 100 amps continuously. From wire gauge calculators 100 amps requires 1 AWG copper wire. However, I see the wires included are 5 awg (and I see everyone online using these supplied wires in their racks)...

Thanks for that chart!! I am not in any way practiced at this. I'm essentially winging it. However, I've thought a lot about it and this is my reasoning. I'd love to learn anything you can clear up. You said, 26kW output can deliver 216 amps. That is excessive for the house, but half of that...

Hi, I didn't even see this message come in. Sorry for not answering it. This is Brice in case we know each other. I'm actually building three places right now, but only one am I reporting on here as the other two will be mostly similar while hopfully working out the kinks. My main home I'm...

So just as l00semarble wrote his query above, I have just received a container in Costa Rica that has my system on it. So, there are no assembly tips, tricks, or errors to report yet, but here is the buy-list that actually got delivered: 4 EG4 6.5KW inverters (they take PV input of 500v max...

I've decided to install Ironridge xr1000 rails for my new system with 42 panels in 7 landscape rows of 6 panels (image below). I see it is often recommended to leave a few inches of space between panels for thermal expansion. Ironridge tech support told me their system doesn't require this. I...

Hi Samsonite, Thanks so much for your feedback. I am in Costa Rica so will not have cold induced high VOC issues. 9 panels * 50 VOC per panel is 450 VOC and the inverters are rated for 500 max. So, I'm assuming I have a small safety window. Do let me know if you think this is too...

Hi All, So I've bought - and will soon assemble - the following equipment for two off-grid setups (two different homes): 4 EG4 6500ex-48 inverters 36 455W panels (9s each going to one inverter...no combiner) 6 (soon to be 12) EG4 48v batteries 15kw Generac generator (to be purchased this week)...

I've read that the aluminum copper combination causes a lot of corrosion in a wetter environment. I'm living in Costa Rica and it is very, very wet here.

Ah, that sounds easy!! Thanks so much for all your help!!

Hi John, What a rabbit hole I'm down. The mechanical lugs look like they are all aluminum and I'm trying to avoid that. However, I didn't even know what ferrules were and spent a good hour down that hole just researching crimpers, sources, and sizes. That is a great technology even outside this...

Hi BentlyJ, Thanks again for your comments! You were right about the compression lugs!! I'm really trying to get this install to spec and it is tough. The battery, the server rack, and the inverter do not mention their terminator sizes. I guess you just modify existing lugs to fit?

Hi John, This helps a lot...time to study some more! I've never even seen the Lynx stuff but the wire sizes you are showing here seem in line with a safe version of my calculations. However, I'm finding radical difference in some wire calculators. Is there a DC calculator that is considered...

Hey Bentley, thanks for the comment. Where do I shop those cables/lugs? Thanks.

Hi Samsonite, thanks for your comments. I think I have the solution. I will have 6 batteries and they define my limit. I must support 600amp (each battery being 100amp max). If I run less than 1m off of the server rack bus bar, I can use 500 MCM and connect to a greater than 600amp bus bar, I...

I finally pulled the trigger. I just purchased a system...my first! This is the spec: - 4 EG4 48v 6500 inverters for split phase off-grid application - 6 EG4 batteries (to be doubled after systems up and running and tested) - 36 panels of 450 watt panels (not important but comments welcomed)...

I am planning my new home to run on a residential off-grid solar system (I never want to feed back onto the grid or power equipment from the grid). But, I want to choose either the grid or a generator to backup the panels when the batteries are running low. Right now, I am trying to price a grid...

I'm finding that pricing is only "half the price" if purchased off Alibaba. I can't find anything less than about $25/watt When I look at the prices the only way I can get a half price battery system is to order from Alibaba. Is there a place where I can buy cells in the US?

Damn, what a great bunch of info you guys just dumped on me. I'm just digging into the meat of it. Between the SAM software and the DIY Checklist, I'm into a major study session again. I just wanted to thank you all for responding!! I'll be back shortly after I've digested this new information...

This is my first solar experience and I'm going all-in on a luxury house. I'm an engineer so I know enough to be dangerous, but I'm a mechanical engineer turned computer programmer so I'm not sure it will help at all with this endeavor. I've studied quite a bit and I'm ready to pull the trigger...