VFD cable

You'd best check with the VSD (and motor) manufacturer.

That said, you could probably do it, but I certainly wouldn't recommended it. Most VSD vendors will recommend a special cable with the following characteristics in order to mitigate against being a source of high electromagnetic interference (EMI) and high earth currents:

• Heavy duty screen - usually copper, applied over the entire cable bundle to reduce EMI
  
• Three earth conductors - located symmetrically in the cable cross-section so that the phase-to-earth distance is identical for each phase, and the cable is "electrically balanced". Sometimes you'll see the designation "3C + 3E".
  
• Larger earth conductors - to further reduce the impedance of the earth conductor return parth and therefore reduce earth currents
  
• Robust insulation grades - such as XLPE is commonly used over PVC, so that the cable can better withstand transient voltage spikes

Not true!!

The screen must be bonded to the chassis of the VFD and the chassis of the motor.
The operation of the VFD causes high frequency voltages to be capacitively coupled to the frame of the motor and these voltages cause high frequency currents to flow throughout the whole installation.

The screen has a very low impedance relative to the impedance of the phase conductors. The ratio of the impedance of the phase conductor relative to the screen acts as a voltage divider and reduces the voltage on the frame of the motor, therebye reducing the high frequency currents flowing through the installation.

Bonding must be achieved by a clamp or a screened gland. Pigtails dramatically increase the high frequency impedance and reduce the effectiveness of the low impedance earth path.

Best regards
Mark

http://www.vfd-emc.co.nz