Can you folks please review my setup?

[jaynboom]

1 x Victron 12/1200 Inverter
2 x Victron 100-30 Solar Charge Controllers (only 1 shown wired)
1 x Victron 30A x 12V Battery Charger
1 x Victron SmartShunt 500A
1 x Victron Lynx Distributor
2 x Phono 400W Solar Panels (I have 4 panels)
4 x 12.8V x 100Ah SOK Lithium Batteries
1 x transfer switch that allows switching individual circuits from grid to solar and from generator to solar.

Mounting is on 1/2" plywood with powder-coated aluminum sheet on top. All breakers and fuses are Bussman. Large breaker is 150A Eaton Bussman 187F.

I have 4 solar panels, but I'm afraid of over-paneling by almost 100% for each controller. All switches and breakers are Carling, and are AC/DC rated. 3PDT switches that switch both the hot and neutral wires for each circuit. No hot or neutral connections are shared with the main panel. Each individual circuit is 100% inverter or 100% grid. The 3rd pole is not used. Toggle switches have a center-off position.

 

[Suijkerbuijk]

See attach files what i mean obout your setup.

1e is that breaker ? Yes drop it wrong model .

2e the bus bar connection .
Best use is to set the cable to that fuse in the middel of your 4 battery connection.
So the best busbar is 5 nuts model (u use a 4 model)

For the rest this personal
Best fuse are on the battery self .
Go for MRBF fuse on the battery see attach files.
That fuse is fine for 12 volt systeem .
Fuse have to be close to the battery it self .

https://www.amazon.com/Blue-Sea-Systems-5191-Terminal/dp/B0019ZBTV4/ref=mp_s_a_1_2?crid=2GY1C49DTJUB5&dib=eyJ2IjoiMSJ9.Q1HSMreLBQyRNk2DGiPQWmbXovfFJEUcQfHnbwu9h1Gq152ULBSj3DBEA11RutRU7qCHgjOr0kgEw9s2YxtU270L-mR-uy9iVlOfqc-54QQgsNt_c-zYlyJmmdoj5AvniY5yVi5S2uJRtZ8J0X-ndf-Bi7zPuaNhH0KvesrVRhxEJAs4i2RUdhJH2UqcrsLVuXd-qv4u43vy5uxnb9CASg.ZT9j6p0i-zg_c0YFYnE8EdojZCoYPtjGG9rP_C3iU4c&dib_tag=se&keywords=mrbf+fuse&qid=1731798752&sprefix=mrbf+fuse%2Caps%2C291&sr=8-2

 

[jaynboom]

I'm not sure what you mean by 1E. Are you saying to replace the large breaker with a different one? Or, delete it and use battery-post fuses?

Thanks.

 

[Suijkerbuijk]

I'm not sure what you mean by 1E. Are you saying to replace the large breaker with a different one? Or, delete it and use battery-post fuses?

Thanks.

Replace it .
Looks like that is automatic breaker that you can reset. ( That thing heat up and mega volts drop)
Set it to a t-fuses .
100ah do 1000 max by a arc spark so you have 4 of them that is about 4000a max output if somting go wrong so a mega fuse can not handel it and that automatic fuse really not .

So you can use by 12volts the c20/anl vetus fuse that have 6000 aic by 12volt for that .
Reason u use mrbf fuse by the battery connection that can handel 10.000aic by 12 volt .

Other thing you can do is replace that automatic fuse for a t-fuses than you do not need mrbf fuse .
Wel some will tell that and trust the bms

But if this in a house / boat or car the best setup fuse will be .

By the battery mrbf fuse and a t-fuses by the busbar.

If somting go wrong with the bms that mrbf fuse will save that cable that is connect to that busbar both ways .
And disconnect that battery from the busbar .

T-fuses save the complete cable setup after the busbar connection and not for that busbar.

So really thare is not fuse between the battery and the busbar .

 

[mikefitz]

afraid of over-paneling by almost 100% for each controller.

Should be OK, the Victron will limit to 30 amps output. You will possibility loosing some peak power . Using 100 50 controllers wouldbe an option is its possible to replace/return the 100 30.
Everything else is fine with high quality breakers.
One modification you could add is a MRBF fuse in a Bluesea holder on each battery positive. This would prevent a high current flow into a 'bad' battery.
Regarding the AC side, do you have the neutral to earth bond set in the Victron inverter?

 

[jaynboom]

I have made no changes to the ground setup inside the inverter. I know it can be changed.

I'd like to add a second 12/1200 inverter at some point to spread the load. This setup is a "last ditch" backup to the generator. I plan on moving circuits one by one for now to slowly start paying for the system, and to confirm everything works as it should.

I'm not sure what amperage fuses to put on the batteries.

 

[jaynboom]

Lots of views, but not many comments. Not sure if that's good or bad.

I tried one circuit that I could watch the lights and outlets while beside the transfer-box. Everything worked fine on battery-power. I switched the circuit back to grid for now. I'll add the MRBF fuses to the batteries. I'm researching the other responses. Thanks for the feedback. This is my first system. I tried to research everything I could before building it.