Please give me answer

Really?

Assuming you're an engineer in training, I would like to believe that engineers are very detailed in their communications.

Please provide much more detail to your question, as what you have provided is not nearly enough.

Need:

Conductor material
What type of " current load".
Supply voltage

Just for starters.

Hi, I have a new air compressor machine (atlas copco) which is need for operation.
Details:45kw,83amps,415volts.
What is the right conductor size to use if conductor material is copper and machine
Position is 15metres from the power source.

Minimum 50 sq. Mm. Of copper 3 core, pvc insulated cable