13 ms·

Is there not technology to check changes in resistance? Even if it is in a small area as it heats it resistance should change much more rapidly than resistance

• londons_explore 5y ago
  Careful resistance monitoring could probably make 5 Amps sufficiently safe to avoid fires. But that's about the limit of it without the cable starting to get very bulky (due to needing thicker copper to keep heating down). If you want a cable spec which is never the limiting factor for whatever new gizmo you're trying to design, and therefore want a high power limit, then it's really the voltage that needs to increase, since it can go a lot higher before engineering the insulation gets hard.