Ontario Security Guard License Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 420

What is the best type of extinguisher to use dousing an electrical fire?

Class A

Class B

Class C

Class C fire extinguishers are designed specifically for tackling electrical fires. Electrical fires involve energized electrical equipment such as wiring, circuit breakers, and appliances. They can be caused by short-circuits, overloading, or overheating.

Class C fire extinguishers use non-conductive substances to combat the fire. This is extremely important because using a fire extinguisher that conducts electricity can increase the risk of electrocution and isn't effective in putting out the fire.

For this reason, when it comes to electrical fires, a Class C fire extinguisher is the best and safest choice. It's always crucial to check the classification of a fire extinguisher to ensure it's suitable for the type of fire at hand.

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Class D

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