We don't use Andersons anymore.
Too large and heavy compared to the other options, like EC8, EC5 or XT90 connectors.


Electronics, like valve control wires, we use 1.5mm² wire or AWG16. Connectors, EC2.
Realy fine stuff, we repurpose servoleads or balancing wires.

For main powerleads it's 10mm² or 8AWG.
If we use motors/controllers that go over 250A, we double or even tripple up the wiring.