Sol-Ark 15k and two EG4-LL Racks

[tgilles1]

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[Nobodybusiness]

Since the Sol-Ark 15k has two Battery inputs in it, could I just connect both racks independently to the Sol-Ark and only need to chain the BMS's 1-12 together. I read that the Sol-Ark 15k battery hookup is just a mini-combiner box anyway.

I'm new to this, but planning on some expansion.. I was thinking of starting with 2 racks and 6 batteries, but 3 in batteries in each rack to start. With each rack independently connected to the Sol-Ark.. Then could load up each rack over time as $$ allows to expand it.

Thoughts?

I wouldn’t think so.

Why would you want to do it that way?

I know it was causing issue if you only hooked up 1 side of the positive and one negative to one side of the breaker.

They made these V shaped busbars so you could use a single hookup of 4/0 or whatever your requirements are.

I’m using 2 x 2/0 for each Positive and Negative connection.

 

[tgilles1]

Why? So I could treat each rack separately. why not take advantage of them having 2 battery hookups?

 

[Nobodybusiness]

Why? So I could treat each rack separately. why not take advantage of them having 2 battery hookups?

It’s 1 breaker with 2 connections.

 

[tgilles1]

Why spend more on a buss bar when connecting them both to one to each side combines them anyway?

 

[Nobodybusiness]

Why spend more on a buss bar when connecting them both to one to each side combines them anyway?

To carry more current.

Each 15k can charge at 275 Amps..

 

[FilterGuy]

Why? So I could treat each rack separately. why not take advantage of them having 2 battery hookups?

The other advantage is the you can deal with smaller cable. I hate it when I have to deal with 2/0 or 4/0.

 

[Nobodybusiness]

The other advantage is the you can deal with smaller cable. I hate it when I have to deal with 2/0 or 4/0.

2/0 And 4/0 are easy 400-600 kcmil is damn near impossible to Bend without hydraulics.

 

[DIYrich]

It will work. You need to use both battery connections to get to 275 amps. Each side is limited to something like 160 amps.

I used a busbar with both battery connections to the busbar in order to add a chargeverter (directly charge batteries from a noisy generator). Other benefits are: Easier to parallel another Sol-Ark, and add more racks.