The girth of a power cable roughly scales with capacity though, and there are 3 common pin configurations - 2 equal size blades - 2 unequal size blades - 3 u

The girth of a power cable roughly scales with capacity though, and there are 3 common pin configurations - 2 equal size blades - 2 unequal size blades - 3 unequal + ground pin plus a fourth for 20A - 1 vertical blade, 1 horizontal blade, 1 ground pin USB-C cables have one form factor, which is what GP is talking about. https://en.wikipedia.org/wiki/NEMA_connector https://en.wikipedia.org/wiki/NEMA_connector