Question 26 of 30
Why is a CO2 type of fire extinguisher preferred for electrical installations?
A
It provides extensive long-term cooling
B
It expands into a sticky visual foam barrier
C
It leaves no residue and does not damage any equipment
D
It can be safely deployed without isolating power circuits
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Answer & Explanation
The correct answer is Option C: It leaves no residue and does not damage any equipment.
CO2 is preferred for electrical installations because it is a non-conductive gas that extinguishes fire by displacing oxygen and cooling, and importantly, it leaves no residue that could damage sensitive electronic components.