I have just purchased and installed (2) AC500 units and (4) B300 batteries. I have a split phase configuration and I am charging with grid currently using it as pass through. I want to add solar charging.
It seems each AC500 head unit can take (2) solar inputs. It also seems that each battery can take a solar input. In my case, that’s (4) inputs per system or (8) total for my complete setup. Thats (8) positive and (8) negative wires that I would need to run from an array where I intend to put it. The array to the install of the Bluetti’s is probably about 400ft.
How can avoid this and just run (2) wires from the array and split the power close to the Bluetti units?
At this point, I probably don’t need to mention I am new to solar…
Thanks in advance for input!
@SteveP If you plan to charge two AC500s with 4 solar panel arrays, first of all, the open circuit voltage of each solar panel array should be within 150V. The solar panels in the 4 solar panel arrays must be the same, and the number of solar panels in each group must be the same.
The 4 solar panel arrays can be connected in parallel so that only 2 wires can be connected to the arrays, and then the power supply is also divided by association near the Bluetti device, and the positive and negative poles are divided into four groups to charge the two AC500s.
It is important to note that the number and type of solar panel arrays in each group must be the same, and also that after parallel connection, the AWG of the 2 wires in the array must be sufficient, and the current that the wires can pass must be large enough.
Some additional info:
The ideal situation is that you connect solar panels in series or parallel using identical panels but while this is the best option, it is not a requirement. Mixing solar panels from different manufacturers with different electrical ratings is possible but comes with power loss.
If you are wiring your solar array in series, the voltages will still add together, but the current output (Amps) will be equal to the lowest-rated panel in the series.
If you are wiring your solar array in parallel, the Amps will still add together but the system output voltage will match the panel with the lowest voltage rating.
Voltage is the crucial factor for your Bluetti system, the AC500 can have maximum 150V per inlet. Additionally, each B300S can have maximum 60V. Make sure not to exceed these voltage parameters!
Over-dimensioning in current (Amps) is not an issue but your wiring must have sufficient thickness for the expected current to pass through.
Thanks for the response. It seems I probably wasn’t clear in my original post. I have included a couple pictures.
For refresh, I have just purchased and installed (2) AC500 units and (4) B300 batteries. I have a split phase configuration and I am charging with grid currently using it as pass through. I want to add solar charging.
My attached pictures depicts my interpretation of what I need to install to support both units. (Note: my batteries are B300’s not B300S models)
It looks like I would need to run (8) wires for my head units from my panels. If I wanted to also independently charge each of the batteries, that would maybe be (8) more?
I hope I am missing something. Thanks in advance for advice…