Preventing Electrical Hazard

ELECTRIC HAZARD

Electrocutions are one of the greatest hazards on construction sites. When in direct contact with electric high voltage equipment, such as overhead powerlines or transformer cabins, electrocution can cause death by cardiac arrest. Electricity flows through conductors. Conductors include metals, water, earth, but also the human body. When electrical equipment is functioning properly, the circuit is maintained between the tool, the wires and the electric source.

However, in case of a malfunctioning machine or circuit, the operator can become part of the electric circuit. When in direct contact with a “live” wire, a person can feel a tingling sensation, over an intense electric shock, to ultimately a fatal electrocution, depending on the power, frequency and type (AC/DC) of electric source. Voltages over 50V AC or 120V DC are considered hazardous.

Health risks due to electric contact
1mA
faint tingle
5mA
slight, not painful but disturbing shock
6-25mA
painful shock, loss of muscular control
9-30mA
freezing current, muscular contraction, but can also be pushed away from the circuit
50 - 150mA
extreme pain, severe muscular contraction, respiratory arrest, death is possible
1.000 - 4.300mA
heart fibrillation, muscular contraction and nerve damage, death is likely
10.000mA
severe burns, cardiac arrest, death is probable.
Health risks due to electric contact
  • defective or damaged tools, badly maintained equipment
  • inadequate wiring, improper grounding
  • unsafe work practice or environment
  • unexpected exposition to electric parts
  • contact with overhead power lines, high voltage circuits
  • overloaded circuits, improper insulation
Protection from electric hazard can be obtained in many ways:

One of the safety features is the use of insulating protective equipment. Safety Jogger offers safety shoes with EH characteristic:

  • according to ASTM-F2412
  • AQL tested in production at 18.000V, 60Hz, AC
  • Outsoles made in specific insulating rubber or PU compound