• Faulty material, design, construction, erection
  • Vibration, maladjustments, malalignment
  • Defective lubrication, loosening of parts, molecular fatigue, self heating, explosion due to internal pressure, implosion due to external pressure or internal vacuum, abnormal stress, centrifugal force.
  • Excessive electric pressure, failure of insulation, short circuit, open circuit, or arching including damage by internal fire so set up.
  • Failure of connected machinery or protective devices.
  • Lack of skill, carelessness or malice of persons, whether insured employee or not.
  • Falling, impact, collision.