What is the minimum size of conductors that should be used in multi-conductor cables?

The minimum size of conductors that should be used in multi-conductor cables is 22 AWG. This size is widely accepted in low-voltage communication systems due to its balance of current-carrying capability, resistance, and flexibility.

Using 22 AWG conductors ensures that the cables can handle typical data transmission requirements without significant signal loss or degradation. Such conductors are also compatible with standard connectors and termination points found in various communication systems.

It's essential to consider the specific needs of the application, such as the distance of the run and the required signal integrity. However, for general purposes, 22 AWG is often seen as the industry standard for multi-conductor cables to optimize both performance and reliability.