Which of the following are the sources of heat generation within the cables ?
1. I2R losses in the conductor.
2. Dielectric losses in the cable insulation.
3. Losses in the metallic sheath and armourings.
Select the correct answer using the code given below :
1
1 and 2 only
2
1, 2 and 3
3
2 and 3 only
4
1 and 3 only