Electrical Fire Safety: Why a Water Extinguisher Shouldn't be Used

Electrical fires are a serious hazard that require immediate and proper handling. Incorrect attempts to extinguish such fires using a water extinguisher can have tragic consequences. In this article, we will address common misconceptions and provide valuable information on how to safely manage electrical fires.

The Dangers of Using a Water Extinguisher on Electrical Fires

When dealing with electrical fires, it is crucial to understand the fundamental principles of electricity and fire behavior. Electrical fires occur due to the presence of live wires or faulty electrical appliances. Attempting to use a water extinguisher on such fires can be extremely dangerous for several reasons:

Water conducts electricity, which can electrocute anyone in close proximity to the fire. If the power supply has not been properly isolated, water splashing onto exposed live wires can create a dangerous electrical circuit, leading to further fires or electrocution. Data and equipment can be damaged due to water damage, complicating future recovery efforts.

Steps to Safely Managing an Electrical Fire

If you encounter an electrical fire, the first step is to immediately cut off the power supply. Here are the essential steps to follow:

Switch Off the Power Supply: Turn off the main power supply to the affected area. If possible, use a plastic or rubber handled switch to avoid electric shock. Evacuate the Area: If it is safe to do so, evacuate the area and ensure that all occupants are accounted for. Alert Authorities: Call the fire department immediately and provide them with the location and nature of the fire. Use an Appropriate Extinguisher: Once the power is off, and you have exited the premises, use an appropriate fire extinguisher. CO2 and dry powder extinguishers are ideal for electrical fires.

Risk of Electrical Current from Extinguishers

Even after power has been cut off, using a water-based fire extinguisher can still pose significant risks. The water stream can carry electrical current back to the live wires, which can then conduct into the extinguisher and potentially electrocute anyone handling it. The metallic components of the extinguisher, such as the trigger, can also allow electrical current to flow.

To mitigate these risks, it is crucial to:

Ensure that the fire is no longer receiving power from any source. Introduce the fire extinguisher only after the power has been safely disconnected, and the fire is no longer active but might reignite. Use appropriate personal protective equipment (PPE) such as protective gloves and boots when handling the extinguisher.

Conclusion

Electrical fires require a careful and cautious approach, and attempting to use a water extinguisher is not only ineffective but also dangerous. Remember, the first step in dealing with an electrical fire is to cut off the power supply. If the situation appears overwhelming or if there is any doubt, it is always best to call professional fire services. By following these guidelines, you can help prevent accidents and ensure safety both to yourself and others.