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Loss of Phase (LT Mainline wire cut (Undersized conductors (Existing…

- - - - Twisted or bridged mainline wires
        
        Wires fouled by trees and vegetation
        
        Trees and vegetation adjacent to power lines not adequately trimmed
        
        Sagging
        
        Bent or broken poles
        
        Poor construction
        
        Poor supervision and QA/QC of new projects
        
        Poor workmanship
        
        Activities of construction workers
        
        Vehicular collision
        
        Adverse weather
- - - - Poor supervision and QA/QC of new projects
      - Poor workmanship
        
        Lack of documented SOPs for pole erections
        
        Staff incompetence
        
        Lack of continuous relevant training
        
        Mismanagement of technical staff
        
        No supervision by a competent person
- - - - No specification agreed with the user department on feeder pillar units
    - - Daily DT load shedding
      - Frequent short circuits
      - Overloading
    - - Use of bare copper wire as fuses
      - Failure to adhere to equipment specifications on loading, etc.
        
        Procurement of equipment without spec sheets
  - - - Phase imbalance
        
        Customers can switch phases
        
        No wiring/electrical standards in place for buildings to be connected
        
        They have access to modify our network at will
        
        No vigilance and action against offenders
      - Too many services/loads connected to an LT line
        
        Unauthorised network extensions
        
        Poor monitoring, vigilance and action against offenders
        
        Unauthorised new connections
        
        No SOP enforced for new connections
      - Overloaded LT lines are not identified and controlled
    - - LT mainline cut
      - LT mainline twist
      - Wires touch intermittently
        
        Sagging
        
        No preventive maintenance to retension sagged lines
        
        Weak conductors exist (that might snap if tensioned)
        
        Existing weak conductors have not been replaced
        
        Poor workmanship
        
        Rotten, broken or bent poles (unsafe to work on)
        
        Bad poles in the network have not been replaced
        
        Poor construction
        
        Overspanage
        
        Existing overspanage not corrected
        
        Poor supervision and QA/QC of new projects
        
        Negligence of LT preventive maintenance
        
        Fouled by trees and vegetation
        
        Trees and vegetation adjacent to power lines not adequately trimmed
  - - - No supply of cartridge fuses
        
        User department has not insisted on procurement of cartridge fuses
- - - - Not enough aluminium conductor provided for maintenance
      - No supply of bimetallic line taps
    - - Lack of continuous relevant training
      - Mismanagement of technical staff
    - - No procurement agreement with user department on specification of materials e.g. line taps