I have three XM540-W270-R and one XM430-W350-R, all daisy-chained, where the first XM540-W270-R gets power/data input, and the XM430-W350-R is the last motor in the daisy chain (i.e. the furthest away from the input). Looking at the stall torque currents for these motors, XM540-270-R has a stall torque current of 4.4A at 12V, while XM430-W350-R has a stall torque current of 2.3A at 12V. So the maximum current will be 15.5A. Will the default 21AWG wires be sufficient to carry this current? Or do I need to connect higher gauge wires to the JST EHR-04 connectors, and if so, how would that be done?

Do I need to add power jumps to decrease the amount of current going through the first motors in the daisy chain, as described here?