Will this setup work?

This ^^ is an excellent point. Most of the better charge controllers have a temperature sensor that goes on one of the battery terminals and allows the controller to tweak the charge voltage to compensate for ambient temperature. These sensors sometimes are an option that costs extra.

If your batteries are in an indoor climate controlled location then you probably don't need the option. But if your batteries will be exposed to excessively hot or cold environments, then the $30 or so extra for the sensor is worth it.

 

The read the power inverter and charge controller manual.
Some inverters use the negative as the ground, some have a ground terminal and that is the only place the ground should be connected.

 

NEC dictates all grounds should be tied in at the same point.
Even for lightening rods connected to a house.

 

Outstanding Brokor.

My inverter manual says to ground it. The CC doesn't mention anything about a ground (although it does have a temperature sensor so I'm good there). I was just curious about running a ground wire from the battery negative to my ground bus which eventually leads to the ground pole.

There is only one ground pole which is fed from the ground bus, which is fed by various devices. I just wasn't sure if I wanted to connect the batteries to that ground bus.

 

Common ground is needed in UL/NEC/CSA rules , Problem is NOT TO set up a loop , as no one caught on . So since all are helping Fury , I'll back out .
Sloth