What can be used safely to extinguish a class “C” fire in a facility?

Class "C" fires are defined as those that involve energized electrical equipment. The correct method for extinguishing such fires focuses on ensuring the safety of the individual while effectively putting out the flames. An extinguisher specifically rated for electrical fires, typically one that uses carbon dioxide or dry chemical agents, is designed to extinguish flames without posing an additional hazard. These types of extinguishers work by removing oxygen or interrupting the chemical reaction that fuels the fire without conducting electricity, which makes them suitable for dealing with live electrical fires.

Using a foam fire extinguisher is not appropriate for class "C" fires as foam can conduct electricity and potentially create a shock hazard. Similarly, water should never be used on electrical fires because it is a conductor of electricity, posing significant risk to anyone attempting to douse the flames. Fire blankets are not ideal either, as they are primarily used to smother smaller fires or protect individuals from flames rather than deal with electrical equipment fires. Therefore, the safest and most effective means of extinguishing a class "C" fire is with an extinguisher rated specifically for electrical fires.