Which thickness CY cable do I need for 1.5kW spindle?

[paulus.v]

It is thinner and lighter but it should be 1.5mm2. 0.75mm is OK for control signals but actually too thin for the power.

You do not say that you prefer or recommend using thicker cables to be on the safe side or you normally have them at hand or you don't mind wasting a valuable metal with finite resource here on earth. But you say that a 1.5KW spindle cable should be 1.5mm2 and the control cables 0.75mm2 (when most control cables are 0.25mm2). This approach is all wrong!