3　Selection of Cable Type and Cross-section

3.1　Material of Cable Conductor

3.1.1　　The control cable shall use copper as the conductor material.

3.1.2　　In the following occasions，copper-core power cables shall be applied:

1　The circuits of generator exciters，major power supplies and mobile electrical devices which need to have highly reliable connections；

2　A severe working environment where intense vibration，explosion danger，or corrosion to aluminum exists；

3　Fire resistant cables；

4　Power cables close to the high-temperature equipment；

5　When used in public facilities requiring high security；and

6　When more power cables are needed due to considerable working current.

3.1.3　The cable conductor can be of either copper or aluminum except where the relevant products use only copper conductor or where only copper conductor is allowed to be used according to Articles 3.1.1 and 3.1.2.