Basic Corrections Officer: Certification Study Guide

Which extinguisher type is most effective on electrical equipment fires?

1. Halon Extinguishers

2. Water-based Extinguishers

3. Carbon Dioxide Extinguishers

4. Dry Chemical Extinguishers

The correct answer is: Halon Extinguishers

The most effective extinguisher for electrical equipment fires is a Halon extinguisher. Halon works by interrupting the chemical reaction that occurs during combustion, making it particularly effective for flammable liquids and electrical fires. One of the key advantages of Halon is that it does not conduct electricity, which makes it safe to use on energized electrical equipment without the risk of shock or further damaging the equipment. While Carbon Dioxide extinguishers can also be effective on electrical fires due to their non-conductive nature, Halon is specifically designed for such situations and may offer more efficient fire suppression. Water-based extinguishers are not suitable for electrical fires, as water conducts electricity and poses a safety hazard. Dry chemical extinguishers can also be used on electrical fires, but they may leave residue that could damage sensitive electronic equipment, whereas Halon does not leave such residues. Thus, Halon extinguishers are the preferred choice for effectively managing electrical equipment fires.