We would like to use 12 T200 thrusters, each with a separate BasicESC. The input power will be coming from power supplies and since each need about 22A max, we are going after commercial products. The problem is that power supplies come in 15V or 24V by standard and we could not find any with 20V that has a high current output, in our case about 270A in total.
We decided to go for 15V, and in this case, we will be limited to 15*22=330w max power which is fine considering the max power of each thruster is 350w.
The problem is voltage drop over 5x2 meters of round trip, which is around 1.5v for a 3x2.5mm2 cable. Is this still a reasonable range for the function of ESC or should we go for a thicker cable?
For example, if we go for a 3x6mm2 cable we will have a voltage drop of about 0.62v with the cost of extra weight and thickness of the cable.