Electrical Systems Safety Rules


Why is it so important to work safely with electricity?

The voltage of the electricity and the available electrical current in regular businesses and homes has enough power to cause death by electrocution. Even changing a light bulb without unplugging the lamp can be hazardous because coming in contact with the “hot”, “energized” or “live” part of the socket could kill a person.

Injuries result from electrical Shock?

People are injured when they become part of the electrical circuit. Humans are more conductive than the earth which means if there is no other easy path, electricity will try to flow through our bodies.

There are four main types of injuries: electrocution (fatal), electric shock, burns, and falls. These injuries can happen in various ways:

Muscle contractions, or a startle reaction, can cause a person to fall from a ladder, scaffold or aerial bucket. The fall can cause serious injuries.

An arc blast can include a potential pressure wave released from an arc flash. This wave can cause physical injuries, collapse your lungs, or create noise that can damage hearing.

Direct contact with exposed energized conductors or circuit parts. When electrical current travels through our bodies, it can interfere with the normal electrical signals between the brain and our muscles.

Safety Rules

  • We have to switch off, isolate and properly earth the circuit before doing any work with the circuit.
  • Use only tools and equipment with non-conducting handles when working on electrical devices.
  • Use only tools and equipment with non-conducting handles when working on electrical devices.
  • Enclose all electric contacts and conductors so that no one can accidentally come into contact with them.
  • De-energize open experimental circuits and equipment to be left unattended.
  • We must display Danger Board at the place of work.
  • We should not work on electrical circuit during heavy lightning storm.
  • Never use metallic pencils or rulers, or wear rings or metal watchbands when working with electrical equipment. This rule is very easy to forget, especially when you are showing some electrical part pointing with metallic pencil.
  • Avoid contact with energized electrical circuits. Please don’t make fun of this rule if you already know this and remember that if something bad occurs – you probably won’t have second chance. That’s not funny.
  • Disconnect the power source before servicing or repairing electrical equipment.


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