wire gauge for prototyping board
The ampacity is the current carrying capability of a wire. In other words, how many amps can it transmit?
You may have to check these parameters:
Maximum amps for chassis wiring and Maximum amps for power transmission.
So you have to use AWG 27 at least.
The wider the cable, the better.
Reference:
https://www.powerstream.com/Wire_Size.htm