The electric shock occurs when current passes through the body upon touching energized sources.
The prevention of electric shock requires regular maintenance, use of Personal Protective Equipment (PPE) and extra caution in humid environments without proper safety measures.
What is electric shock and how does it happen?
Electric shock occurs when the body acts as a conductor, providing a path of least resistance between two points with a potential difference.
Technically, the body closes an electrical circuit, allowing electrons to flow through tissues and internal organs.
The resistance of the skin plays a determining role in the intensity of this occurrence. While dry skin offers greater protection, moist or sweaty skin drastically reduces this natural barrier, increasing the risk of death.
In accidents, quick assistance and immediate contact with agencies such as the Fire Department and Emergency Medical Service (EMS) are crucial.
According to data from the Brazilian Association for Awareness of Electrical Hazards (Abracopel), Brazil recorded nearly a thousand accidents and 646 deaths from shock in 2025, reinforcing the need for safety.
How does an electrical accident occur in practice?
The electrical accident materializes when a person simultaneously touches an energized conductor and a reference surface, such as the ground. This contact establishes a path for the electric current, which passes through the body to complete the path.
The formation of this electrical circuit generates various effects depending on the entry and exit points. The passage of electricity through vital organs, such as the heart, can cause cardiorespiratory arrest and severe and immediate electrocution trauma.
Electricity is an invisible force that requires extreme caution both in residential environments and in industrial operations. Understanding the origins of failures is the first step to ensuring everyone’s physical integrity.
Most common causes of electric shock
Many incidents occur due to negligence or lack of awareness of hidden dangers in poorly maintained installations.
Identifying risks such as electrical arc and exposed wiring or poorly maintained wiring helps mitigate the likelihood of a fatality or electrical trauma.
Among the most common causes are:
- Overloading outlets: connecting many devices to a single point heats the wires and damages the insulation.
- Excessive use of adapters: using multiple “power strips” creates unstable connections prone to dangerous short circuits.
- Voltage incompatibility: plugging 110V devices into 220V networks causes explosions and risks of electric shock.
- Unprotected outlets: especially in the home environment, children may insert metallic objects into unprotected power points, causing serious accidents.
Main types of electric shock
There are different ways of interacting with electricity, ranging from minor annoyances to more serious events and major accidents.
Knowing the variations between different types of discharges helps in adopting specific preventive measures for each risk situation.
Static Shock
Occurs due to the accumulation of charges on the surface of objects or the human body itself. It is common when touching metal surfaces after walking on carpets, resulting in a quick and generally harmless electric discharge.
Dynamic Shock
This is the most frequent and dangerous type, caused by direct contact with exposed wires or poorly insulated equipment. The electric current in the body flows continuously as long as there is contact, potentially leading to death quickly.
Atmospheric Discharge (Lightning)
This is an extremely intense electrical discharge originating from clouds during storms. Direct or indirect impact causes deep burns, permanent neurological damage, and instant cardiac arrest in unprotected victims.
Factors determining the severity of electric shock
The severity of an electrical accident depends on technical variables that dictate the level of tissue destruction. Assessing the intensity and path of the energy is essential to understand the damage suffered by the victim.
Check out some criteria:
- Current intensity: the higher the amperage, the greater the internal damage and the risk of fibrillation.
- Exposure time: staying in contact with the source for more seconds increases the chance of irreversible injuries.
- Path through the body: if electricity passes through the heart or brain, the lethality of the shock is multiplied.
- Type of current: the alternating current (AC) is more dangerous than direct current (DC) because it causes muscle contractions.
How to prevent electric shock in daily life
Adopting safe behaviors and investing in quality infrastructure ensures the continuity of operations with maximum supply stability.
In the home environment:
- Install outlet protectors to prevent children from direct access to the electrical network.
- Avoid handling appliances with wet hands or feet, especially in bathrooms and kitchens.
- Immediately replace old or exposed wiring to prevent the occurrence of an electrical arc.
In the work environment:
- Always use appropriate Personal Protective Equipment (PPE), such as insulating gloves and rubber boots.
- Mark areas of high electrical voltage and keep electrical panels locked to prevent unauthorized access.
- Perform electrical commissioning periodically to validate the integrity of all security systems and devices.
Prevention is the most effective tool to avoid negative statistics at home or in the workplace.
What to do in case of electric shock?
Knowing how to react correctly during an electric shock can be the difference between life and death.
Quickly interrupting the power source is the first step to a successful rescue.
- Turn off the power source: trip the circuit breaker or unplug the cord without touching the victim.
- Safely move the victim: use non-conductive materials like dry wood or plastic if you cannot turn off the power.
- Call for medical help: immediately call emergency medical services like SAMU (192) or the Fire Department (193) and inform them of the situation.
- Check vital signs*: observe breathing and pulse, starting Cardiopulmonary Resuscitation (CPR) if trained and necessary.
*Important notice: these guidelines are only for immediate assistance and do not replace specialized medical care, which is essential after any type of electric shock.
What are the consequences of electric shock on the body?
The aftereffects of a shock go far beyond the initial scare, profoundly affecting multiple biological systems.
The impact of electric current on the body can cause thermal and biological damage that may manifest hours after the event.
- Electrical burns: serious injuries that occur at the points where electricity enters and exits the skin.
- Muscle spasms: violent contractions that can cause bone fractures or prevent the victim from releasing the wire.
- Neurological damage: electricity can affect nerve centers, causing loss of consciousness, paralysis, or seizures.
- Cardiac arrhythmia: direct interference with heartbeats, which can lead to a fatal cardiac arrest in a matter of moments.
Electric shock in the workplace: what NR-10 says
The Regulatory Standard 10 (NR-10) establishes the minimum requirements to ensure the safety of workers interacting with electrical installations. It requires specific training, risk analysis, and the adoption of strict collective and individual protection measures.
At Tecnogera, operational safety is a priority and is present in all temporary energy solutions, which strictly follow current regulations.
From electrical commissioning to the use of cable protectors, we offer technology to prevent accidents and ensure efficiency in your projects.
Talk to our specialists and ensure energy self-sufficiency for your company!
Frequently Asked Questions About Electric Shock
What is an electric shock?
Shock is the physical reaction caused by the passage of electric current through the human body when touching conductors or live sources.
What are the 3 types of electric shock?
The main types are static, dynamic, and lightning strike, each with distinct origins and levels of danger for people.
What to do after getting an electric shock?
Seek medical help immediately, even if you seem fine, to assess internal damage, heart rhythms, and possible late sequelae from the electric discharge suffered.
What can electric shock cause?
It can cause anything from tingling and burns of varying intensities to cardiorespiratory arrest, severe brain damage, and immediate death by electrocution in severe cases.
How to prevent electric shock?
Keep installations inspected, use safety devices like the Residual Current Device (RCD), avoid improvisations, and never handle electrical appliances with a wet body.
How to provide first aid in case of electrical accidents?
Cut off the electric current without touching the victim, move them away with an insulating object, and urgently call emergency services at 911 or the fire department.
What are the danger differences between 110V and 220V?
Both voltages are dangerous, but the 220V network can cause more severe damage quickly due to the greater force of the electric current in contact.
Can electric shock kill?
Yes, electric shock can be lethal depending on the intensity of the current, the exposure time, and if the path affects the heart or causes severe burns.
What is the difference between electric shock and electrical burn?
Shock is the passage of current through the body, while a burn is the thermal injury to tissues caused by the heat of that electricity.
How long after an electric shock can symptoms appear?
Some severe symptoms, such as cardiac arrhythmias and kidney complications, can arise several hours or even days after the initial electrical accident occurs. It is important to seek a doctor, report the incident, and listen to a specialist’s opinion.
