Router has died. Need Advise Please.

[Jonathan]

The mains cable to the inverter only need 1mm standard 3 core flex. ..Clive

Additionally, since we know that 3-phase power transmission is more efficient than single phase, that shows we can use a bit less than 1mm^2 cable from the inverter to the spindle. However the cost difference is likely to be negligible over such a small length, so I wouldn't worry too much. I used the same 1.5mm^2 4-core CY cable for my stepper motors and spindle, simply because at the time obtaining a reel of that cable was more cost effective than getting a smaller length of two.