The most appropriate method to put off Electrical fire is by using ______.

Concept: 

To fight the different classes of fires, there are different types of fire extinguishers. Each has its own characteristics, capabilities, and limitations.

• Water extinguishers
• Carbon Dioxide (CO₂) extinguishers
• Dry Chemical extinguishers

• The extinguishing media is pressurized CO₂. Use to put off Electrical fire.
• When used for Class B and C fires, the CO₂ covers the fuel by blanketing it and stops the reaction at the surface by displacing oxygen.
• Be thorough when using a CO₂ extinguisher. It has a moderate spray range and lasts only 10 to 30 seconds.
• A hard horn attached to the end of the spray tube helps to contain and aim the spray at the target area.
• Do not use CO₂ extinguishers in confined spaces as CO₂ can displace the oxygen in the air, making breathing difficult.
• Only use in a confined space if workers have appropriate respiratory protection.
• Do not use CO₂ extinguishers for Class A fires because the fire may continue to smolder and re-ignite after the CO₂ disperses.

• Dry chemical extinguishers are the most common and available in few types.
• These extinguishers will be marked for the classes they are designed to extinguish (e.g., ABC type extinguisher will put out Class A, B, and C fires).
• The extinguishers discharge a blanket of fine powder which creates a break between the fuel and the oxygen in the air.
• The powder also works to break the chemical reaction. Be accurate when using as they have a short to moderate spray range and last only 10 to 25 seconds.
• Be cautious of the residue after using dry chemical extinguishers. The residue can damage motors, computers, and other electrical equipment.​

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