Question on SolArk 15k SolarEdge AC system with batteries

[MikeSpeegle]

I just found out I need to use both sets of terminals. I have 4/0 welding wire from Victron and 2/0 for each 51.2v 250ah series string and 1/0 between batteries in string. I have 250 amp fuses in the Victron for each parallel string and a 500 amp fuse which will only trigger in with a problem as 15k would never use more than 275 amps.

Now they say I need two sets of wires 4/0 to each pole in SolArk. Can I use a 500amp 3 pole busbar after the switch and shunt to send two wires. Will my short runs to fuse and switch be ok?

Or should I use Y adapters from home grid on my already ran 4/0 cable?

Not trying to pin someone with an answer just asking for suggestions that I will take full responsibility using.

Last question are the two black rings for the battery cables necessary because I forgot them.

Thanks!!!!

 

[DIYrich]

Bussbar from battery to inverter is fine. That is how mine is setup. You can have it inside the trough. Put the battery connection between the two sol-ark connections. Put on the doughnuts near the sol-ark when you rewire.

 

[MikeSpeegle]

Bussbar from battery to inverter is fine. That is how mine is setup. You can have it inside the trough. Put the battery connection between the two sol-ark connections. Put on the doughnuts near the sol-ark when you rewire.

Thanks will do today.

 

[teal95]

I think the manual specs 2/0 for using both inputs. I have 4/0 from my battery to the buss bars and then dual 2/0 from bus bars to SolArk.

 

[MikeSpeegle]

I did 4/0 to fuse then switch then busbar and the a very tight two pairs of 4/0 to SolArk see attached. All wires from busbar to SolArk are same size positive and negative. The positive and negative before are close.

 

[MikeSpeegle]

I think the manual specs 2/0 for using both inputs. I have 4/0 from my battery to the buss bars and then dual 2/0 from bus bars to SolArk.

I like to do overkill but to be honest I didn’t have enough 2/0 left over and did 4/0.