What are the 5 main electrical hazards?

Examples of electrical hazards in the home

A grounding system (or grounding system) is a protective system for electrical installations that connects parts of them to the conductive surface of the earth. Technically, it is the direct electrical connection of a part of an electrical circuit device to an electrode or groups of electrodes buried in the ground.

In the event of an unexpected shunt of electrical current or lack of insulation, i.e. direct or indirect shunts, the grounding system carries this shunt to ground to ensure the safety of people and the functionality of the equipment. When an electrical system is not properly grounded, a hazard exists. Read more about the hazards of improper grounding.

A high-voltage power line is an infrastructure used to transmit and distribute electrical power over long distances. Accidental contact by either a person or an object can cause serious injury.

What are the main electrical hazards and their effects?

These risks can be classified into two main groups: Fires and/or explosions: affecting people, installations and goods. Electrification and electrocution: affecting people. Fires due to electrical energy are mainly caused by overloads in the installation, sparks or short circuits.

What are the electrical hazards at the household level?

Electric Arc. Electric field. Asphyxia due to respiratory arrest. Ventricular Fibrillation.

Summary of electrical risk

Royal Decree 614/2001 establishes the minimum provisions for the protection of the health and safety of workers against electrical hazards, a regulation which in turn forms part of the Law on Occupational Risk Prevention. The effects of an electric shock on the human body can be very serious, and are often associated with indirect injuries such as falls from heights or blows to materials and tools.

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The effects of an electric shock on the human body can be very serious, and are often associated with indirect injuries such as falls from heights or blows from materials and tools. How can electrical hazards at work be prevented?

The employer must ensure that workers receive adequate training on electrical hazards, as well as their prevention and protection measures. In this regard, the Technical Guide prepared by the INSST establishes a minimum training for workers:

It is important to avoid electrical risks at work by using the appropriate tools such as those that are insulated for electrical work, as well as always discarding deteriorated equipment and systems.

In addition, for many jobs in both low and high voltage it will be necessary for the worker to wear individual protection equipment such as insulating gloves, face shield or goggles suitable for electric arc, harness or safety belt, insulating safety helmet, gloves for protection against electric arc, and safety footwear, among others.


Contact with electrical voltage can cause current to flow through the body, resulting in electric shock and burns. This can lead to serious injury and even death. When electricity is used as a power source, little consideration is given to the hazards it can pose.

The following constitute electrical hazards: – Failure to properly select the fuse to be used in the electrical installation. – To replace the fuse by a conductor or electric cable. – Not using the thermomagnetic switch properly.

Electrical hazards are part of work activities, even if they are not perceptible to the human eye. Broadly speaking, an electrical risk is generated in all tasks involving the use of low, medium and high voltage electrical installations.

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One of the occupational hazards to be taken into consideration is the electrical risk that refers to the possibility of contact of the human body with the electric current and that can result in a danger to the integrity of people.

Prevention of electrical hazards at work

Undoubtedly, one of the risks present in most workplaces is that of electrical contact. These risks are related to the use of devices that work thanks to electrical current: computers, tools, work equipment, etc.

Electrification: A person is electrified when electric current flows through his body, i.e. when the person is part of the electrical circuit, being able to distinguish at least two points of contact: one where the current enters and the other where it leaves the body.

Ventricular fibrillation is the anarchic movement of the heart, which stops sending blood to the various organs and, although it is in motion, does not follow its normal rhythm of operation. It is the most serious effect and causes the majority of fatal accidents. Once it occurs, the heart rhythm does not recover spontaneously and, if there is no quick and effective assistance, irreversible lesions are produced and death ensues.