Delphi level 1 charger from Solar

[myersman77]

Hello I have a Delphi level 1 charger, it came with the car from the used lot. I think it's pretty standard and meant for the BMW i3, but can get more specific model number if necessary.
I have essentially the same setup as this for solar
In the video he plugs in his charger and is able to charge the i3.
However when I plug my Delphi charger in my system, it lights up with a "Power fault".
What power spec is not being met with this charger? Maybe I need to get a different charger but I need to know the power requirements.
I also set the i3 to the lowest charging rate.
Any insight is appreciated!

 

[eNate]

If you're receiving a fault light at the go, before even connecting the vehicle, then it's likely an improper ground if not insufficient or unstable voltage.

 

[myersman77]

If you're receiving a fault light at the go, before even connecting the vehicle, then it's likely an improper ground if not insufficient or unstable voltage.

Ah yeah ground. So this Solar inverter is fully off grid, I do have a ground wire going from circuit to the inverter, but then that doesn't really go anywhere.
I was thinking that really isn't complete. I saw another install, and they said as it's an "off grid situation" that they jump the ground wire straight over and connect it to the neutral line. I was hesitant to do that. But I suppose that makes sense, I'm just not entirely sure on why...