Need some advice inverter

[skatekr89]

Hi everyone, first post here.

I'm setting up my solar and I'm torn on inverter orientation. Option 1 has short battery cables but ac block is facing me, and display is upside down on inverter. Option 2 (shown in pic), i need an extra 18" of cable from bus bar, but ac block is facing the back (thus sorta hidden), and display is right side up. I have kids so I want this as safe as possible and prefer option 2.

Question: to considerably shorten the cable length to inverter, can I connect two legs on the main fuse and shunt? These two will be attached to the battery box which will be secured in place.

positive: battery + > on/off switch > fuse > one to + busbar and one to inverter

negative: shunt load side > one to - busbar and one to inverter.

I'm using 2/0 gauge cable for my battery/inverter which is excessively big for my setup but all I could find so settled for it. This would allow me to use longer cables.

Note: board needs to be cut so I can stick it to side wall and angled portion in the back, there will be a lot more space than it looks in photo.
Also building a wood base so I can properly secure battery and inverter and limit holes on countertop.


Thanks!

 

[ncsolarelectric]

I'm sorry, I don't think I understand the question. Yes, if the bolt is long enough to stack the lugs and still fit a nut and lock washer.

 

[chrisski]

IME, the inverter and wiring length does not matter so much for those shorter runs. What matters is ampacity. I’m a bit conservative wanting thicker wire and with a 12 volt system I would want 4/0; with a 24 volt system 2/0. There’s a bit of math that you ought to do For ampacity and voltage loss.

Generally voltage loss is so minuscule on those runs that ampacity is more important.

 

[skatekr89]

IME, the inverter and wiring length does not matter so much for those shorter runs. What matters is ampacity. I’m a bit conservative wanting thicker wire and with a 12 volt system I would want 4/0; with a 24 volt system 2/0. There’s a bit of math that you ought to do For ampacity and voltage loss.

Generally voltage loss is so minuscule on those runs that ampacity is more important.

I agree.
My 2/0 is rated for 400amps at 50 feet.
Safe to say there should be no issue running an extra foot of cable to have it the way I want.

This is the progress. Next is to finish building the battery. Once done it's time to wire the whole thing into the RV's 12V system so I can have power while finishing the 120v side and transfer switch.

 

[acdoctor]

I don’t see any control buttons on the inverter so not a lot to see there anyway.
It looks like you could move the remote monitor from the far left to a better location. Relocate the buss bars under the solar charge controller and mount the inverter there. I would orientate so convection works in the same direction as the fans.
Then you could have a removable panel a few inches in front of everything and use the rest of the storage.

 

[12VoltInstalls]

My 2/0 is rated for 400amps at 50 feet.

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That’s 25 feet round trip.
But you’re only a few feet?
So technically you’re fine.

What would I do? If you know you’ll never go over 2000W I might stay with 2/0 welding cable. If any upgrade is envisioned I’d use 4/0. I used 2/0 on my 1200W. But it’s fine on the 2000W Reliable I have.