1.Short circuiting, excess voltage & electrical arcing

2.Faulty design, faulty material and faulty casting (manifesting after warranty period)

3.Abnormal operating conditions

4.Carelessness and lack of skill in the operation and maintenance of machinery

5.Entry of foreign bodies

6.Falling, Impact, Collision etc

7.Bursting or disruption of turbines, compressors, cylinders of steam engines, hydraulic cylinders or fly wheels or other apparatus subject to centrifugal force, internal pressure.