Which of the following is NOT part of the fire triangle?

• A. Heat
• B. Fuel
• C. Oxygen
• D. Electrical current

Answer: (D)

Fire needs three elements: heat to reach ignition, fuel to burn, and an oxidizer (oxygen) to sustain the reaction. If any one of these is removed, the fire cannot continue. Electrical current is not one of the elements of the fire triangle; it’s a form of energy that can create heat or sparks, but it isn’t a fundamental component of the combustion process itself. So the option describing electrical current is not part of the fire triangle. In practice, firefighting focuses on cooling, isolating or removing fuel, and reducing the available oxygen, while electrical hazards are managed to prevent ignition sources like sparks.