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Signature solar 200A breakers help

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bones1

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I bought two of these breakers but don't know if I need two as I have two Eg4 inverters and two batteries. Should I install a breaker in each positive 2/0 cable for each inverter? I think this would be correct. also cannot find a suitable plastic din box that's deep enough for these. I tried for many hours today moving the lugs around and drilling holes at different heights and these boxes are just too shallow. I don't see how anyone got 2/0 cable to work in these boxes.

1658098546393.png
 
I just bought what they recommended. Will has 300A fuses in his so I thought it may not be enough. On his recommended parts page were these breakers or 300A fuses.

Complete 48V Package Parts List​

  1. EG4 6500EX All-in-one Solar Power System: Click Here to Purchase
    (if the unit above is out of stock, check out more 48V all in one options by clicking here)
  2. 2/0 AWG Inverter Cables: Click Here to Purchase
  3. 200-300A T-Class Fuse (1X required for each 6500EX. The amazon listing stats that these T-class fuses are rated for 12V only. They are actually rated for 125VDC if you read the data sheet. By design, they could handle more than that. These are high quality fuses that will handle nearly any size LiFePO4 battery): Click Here to Purchase
    If you wish to use a 200A Circuit Breaker instead, use this one: Click Here to Purchase
  4. 300A Busbars to connect your all-in-one systems together: Click Here to Purchase
  5. 4/0 Cables for Battery to Busbar Connection: Click Here to Purchase
  6. PV DC Isolator (electrical switch between solar array and all in one system): Click Here to Purchase
  7. Hardiboard for safe system mounting on drywall: Click Here To Purchase
 
Was I allowed to post that?.I bought everything on this list except the fuses.
 
bones1 said:
I bought two of these breakers but don't know if I need two as I have two Eg4 inverters and two batteries. Should I install a breaker in each positive 2/0 cable for each inverter? I think this would be correct. also cannot find a suitable plastic din box that's deep enough for these. I tried for many hours today moving the lugs around and drilling holes at different heights and these boxes are just too shallow. I don't see how anyone got 2/0 cable to work in these boxes.

View attachment 102940
Click to expand...

I used those breakers in my build. I used this 6 way box from Amazon which is just big enough for both breakers. I also didn't use the screw on lug provided with the breaker. I purchased 1/4 crimp on lugs for 2/0 cable also from amazon. I didn't like the idea of using a set screw to push evenly against the copper in the 2/0 cable. When I installed the cable to the I installed the lug upside down which aligned the cable more to the center of the box.
 

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Perfect, that's what I will do as well thanks. Those screw-on lugs were the issue. Also, the line and load don't matter in this instance. I was trying to make the inverter the load but that put breakers upside down, a no-no for inspectors. Thanks for the help. 6-way box as well. I had two 4 ways.
 
Jmjack, I got the box you recommended and everything will fit now, thanks again.
 
Are you using the ac input on these inverters to charge the batteries?. If is it 120v to each inverter input?.
 
I have two EG 4 inverters and have only one 120v 15 amp line I can run to it or them for battery charging. I this doable and how would you go about it?.
 
bones1 said:
I have two EG 4 inverters and have only one 120v 15 amp line I can run to it or them for battery charging. I this doable and how would you go about it?.
Click to expand...
I don’t think you can feed ac in to the inverter at only 15A…
 
bones1 said:
I have two EG 4 inverters and have only one 120v 15 amp line I can run to it or them for battery charging. I this doable and how would you go about it?.
Click to expand...
Can you elaborate on that a little? I don't want to assume you are trying to power the inverter from a wall outlet, but that's kind of what this sounds like. Which if it is, please don't.
 
No not an outlet. I have a dedicated 15A circuit from my main panel that is right next to the inverters but not used for anything. Was wondering if I could use it.
 
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