What are electrical hazards?

An electrical hazard can be defined as a dangerous condition where a worker could make electrical contact with energized equipment or a conductor, and from which the person may sustain an injury. Under such a case, human body is exposed to a voltage, it acts as a resistor and allows current to pass through it. The value of resistance varies with the physical condition of the human body. Some of the common electrical hazards are:

  • Overhead power lines
  • Damaged tools and equipment
  • Inadequate wiring and overloaded circuits
  • Exposed electrical parts
  • Improper grounding
  • Damaged insulation
  • Wet conditions

Preventive measures

Electric sparks, loose connection, improper wiring and lack of personal protective equipment can lead to a fire / shock therefore certain precaution should be taken while dealing with an electrical circuit / equipment.

  • Use insulated tools (e.g., spanners)
  • Put covers over the battery terminals
  • Install fuse (e.g., near the battery)
  • Check contact and voltage drop
  • Tighten up screw wherever applicable
  • Check cable and terminal block periodically
  • Always check the voltage between any conductor and any other wires, and to ground
  • Always wear gloves and avoid touching conductive parts (e.g., battery terminals, metal and mounting frames) with bare hands



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