EG4 battery terminals 4/0 lugs

[medic149]

Does anyone have a picture or description of how to use a 4/0 wire lug on the EG4 battery terminals? The lugs are too big to fit. Filing down the lugs is making them to thin. Not keen on putting a bus bar extension on the terminal unless I figure out a way to cover and protect it from shorting out.


Thanks

 

[jasonhc73]

I used 2/0 on my LV6548's no issue. But I have two LV6548s. The main cable from the bank is 4/0, and then divided to each inverter for 2/0 to the inverters.
But your idea to put a bus bar extention sounds like a very workable solution.

 

[Ampster]

Does anyone have a picture or description of how to use a 4/0 wire lug on the EG4 terminals?

Are you talking about EG4 battery or Inverter? A picture would help. Not all 4/0 Lugs are the same size.

 

[medic149]

Are you talking about EG4 battery or Inverter? A picture would help. Not all 4/0 Lugs are the same size.

4/0 lug onto the EG4 terminals to a busbar then to inverter. The EG4 terminal openings are too narrow to fit the 4/0 lug.

 

[niktak11]

I'd go with something smaller like 2AWG since those packs can only do 100A continuous

 

[Ampster]

I'd go with something smaller like 2AWG since those packs can only do 100A continuous

He may have several in parallel. There are a variety of Lug shapes that would entirely cover the surface area of the Inverter. I presume the inverter to paralleling bus bar is where the biggest load will be.

 

[niktak11]

He may have several in parallel. There are a variety of Lug shapes that would entirely cover the surface area of the Inverter. I presume the inverter to paralleling bus bar is where the biggest load will be.

I'm assuming he is using the EG4 rack with the long busbar. If not then definitely use the largest size you can fit. The limiting factor there might be the internal connection between the two paralleled terminals.

 

[medic149]

I'd go with something smaller like 2AWG since those packs can only do 100A continuous

I tried 2/0 as well and they are too big to.

 

[medic149]

Only 2 in parallel. Not using the server rack. Would like to not have to spend $500+ just to connect them.

 

[robby]

Are you talking about EG4 battery or Inverter? A picture would help. Not all 4/0 Lugs are the same size.

I know what you mean
So many posts of late just say EG4 and I have no clue if it is the battery or the Inverter, complicated further by there being two models of each.

 

[LithiumCanuck]

No need to buy a rack to use bus bars…. A 600A marine bus bar is a perfect fit for 4/0 lugs. (And yes, I rewired the red ones after taking the picture)

 

[Ampster]

Seeing the picture there is always the alternative to use two wires per battery to get the current carrying ability of one big wire.

 

[medic149]

Only 2 in parallel. Not using the server rack. Would like to not have to spend $500+ just to connect them

I know what you mean
So many posts of late just say EG4 and I have no clue if it is the battery or the Inverter, complicated further by there being two models of each.

That's why I put "battery terminals" in the title.

 

[medic149]

No need to buy a rack to use bus bars…. A 600A marine bus bar is a perfect fit for 4/0 lugs. (And yes, I rewired the red ones after taking the picture)
View attachment 102145

Thank you! I got the busbar Will recommended but they will fit the 4/0 lugs and not the lugs that came on the wires from signature.

 

[LithiumCanuck]

Didn’t see Will’s busbar but I had to replace the lugs on my SS wires as well. I still have to go get the heat shrink protector to finish the job ?

 

[SniperX]

Seeing the picture there is always the alternative to use two wires per battery to get the current carrying ability of one big wire.

Do you have a photo of what you are talking about? I see that my 12kw growatt recommends 3*2awg. NO ONE talks about that configuration, but if that is what they suggest... I am not sure it will fit, but would love to see a picture of that.

 

[Ampster]

Do you have a photo of what you are talking about?

Sorry, I don't have a photo. I have seen examples on other posts on this forum, but can't find any pictures.

 

[Ampster]

Do you have a photo of what you are talking about?

Sorry, I don't have a photo. I have seen examples on other posts on this forum, but can't find any pictures.