Industrial Maintenance Technician Practice Test

Question: 1 / 400

Which substance is recommended for extinguishing an electrical fire?

Water

CO2

Baking Soda

Baking soda is recommended for extinguishing an electrical fire because it can smother the flames and reduce the risk of re-ignition. When heated, baking soda releases carbon dioxide, which displaces the oxygen needed for combustion. This makes it effective for small electrical fires, particularly those caused by faulty wiring or equipment where using water could pose a risk of electric shock or damage to electrical components.

In contrast, while CO2 can also be used to extinguish electrical fires, it may not be as readily available for small-scale use as baking soda. Water is highly dangerous for electrical fires as it conducts electricity, increasing the risk of shock. Foam is typically used for flammable liquid fires and may not be suitable for electrical fires either. Thus, baking soda stands out as a safer and effective choice in this context.

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