You have to be kidding me! This install has just kicked my ass. Starting with the brackets that fell off the inverters dusting shipping. I don’t have the eg4 case for the batteries. My lugs finally came in for my 4/0 cable that I was going to run from the batteries to the bus bar then go with 2/0 from the bus bar to the inverters but these don’t come close to fitting in the battery terminals! Ugh
Signature Solar's new EG4 6000 120/240V inverter
- Thread starter Subdood
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42OhmsPA
What's in a title?
This is where I'd take a break, get some air then get the cut off wheel out and kick that plastics ass.
42OhmsPA
What's in a title?
Wouldn't you want the smaller gauge between the batteries, larger gauge between the inverter?
Edit if they didn't upgrade the terminals on the inverter good luck getting those lugs to fit.
Edit if they didn't upgrade the terminals on the inverter good luck getting those lugs to fit.
The inverters looks like they will take the 2/0 lugs just fine. At this point it’s just the batteries that are blocking everything.
I want to! So bad but I need those terminals covered
Yeah, typo?
Correct.
The batteries are only rated to deliver 100A,so#2 copper is fine to the bussbar...
I'd ditch the 4/0 and use 2 or1 awg with appropriate lugs...
The 2/0 lugs don’t fit either. I could possible grind down the 2/0 lugs but didn’t seem like the right thing to do. I’m wondering if I got 2 additional bus bars like the one in the pics and connecting the batteries to that. Then I can run from that bus bar to one’s under the inverters?
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I said, #2 not 2/0…
thanhrodke
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yes, this ^
much, much smaller wire...it's not much bigger than a pencil or pen.
4/0 is gigantical and can handle an entire rack of batteries tied to multiple inverters. that said, my local welding shop had nothing appropriate for my setup.
I ended up buying everything from batterycablesusa.com because they have freaky combinations of wire gauge and terminal size. Like you can get 4/0 battery terminals with narrow lugs with 1/4" (6mm) holes. that's just a really an odd combo, as you are experiencing with your 4/0 lugs being so wide.
thanhrodke
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Can you clarify here?
That was a typo. I didn’t think that message even sent
thanhrodke
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I have discovered that this forum is very good about keeping drafts on the server, and automatically posting them if you have an internet hiccup, page refresh, or something like that.
Ahh yes makes sense! Do you see any issues with connecting my batteries to this with the included battery cables that ship with the batteries?
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thanhrodke
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no, but how long are your battery cables and how many do you have? if all of the batteries and inverters can possibly reach the same bus bar, that would be ideal, but if not, a bus bar for the batteries and then a cable from there to the bus bar for the inverters will still work fine. you'd be doing that exact thing if you had the EG4 rack, since they have their own bus bars. but if your posts are long enough on your bus bars, there's nothing wrong with stacking lugs, just turn one up and one down so they don't interfere with each other as you tighten things down. I had to put a little angle on mine to accomplish this, but maybe this pic will help. the red block probably shows the two lugs with one inverted best.
Okay I finally turned things on and tested some loads. For some reason neither inverter is detecting solar. Any ideas ?I have triple checked the wiring and everything seems tight and connected. It’s just not detecting solar at all. Also are the inverters supposed to be blinking HS …L1 and the other SL….L1
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thanhrodke
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Looks like your two stage battery bus to inverter bus solution worked out pretty great!
I also like that AIMS solar disconnect with the built in MC-4 connectors.
Subdood
Photon Wrangler
I haven't visited this thread in a while, so I'm curious as to how your system is doing.
I ended up getting the EX6500 instead of this model. I really don't have a need for a split phase inverter, as I'm using it only for 120V critical loads.
I'm in the process of building my array ground mount, but the weather isn't cooperating. Too cold and wet to pour concrete for the support posts.
My system is doing very well. I need to put in an order for more panels and batteries. The idle consumption is very real with the 6ks but I turn them off at night so that helps!
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