Router has died. Need Advise Please.

[Bush Flyer]

I'm about to order wiring for the new spindle and was wondering should I buy CY 4 core 1.5mm cable for the spindle and CY 3 core 1.5mm cable for the power to the inverter or could I reduce the cable down to 1mm. I have been looking for a diagram for the wiring and have found some very conflicting diagrams, but I could not find one diagram with cy cable and where to connect the shield then I found one site saying do not use cy cable for mains connection the more I read the more confused I am getting so I will rely on what is said here.

The VFD is 1.5kw HUANYANG VARIABLE FREQUENCY DRIVE.
The motor is a, Germany Imported Bearing, water cooled spindle 0.8Kw

The best information that was pointed out to me was this thread http://www.mycncuk.com/forums/router...vice-more.html
But it did not tell me if I should use CY cable to power the VFD and it did not show the earth and the shield wire.
This is the cable calculator that I used with a 3% volt drop. http://quickbit.co.uk/swa-cable-calculator.html and it always comes out at 1.5mm ?

I apologise for asking simple questions, but wiring and setting up of this is out my comfort zone.