What should be done with electrical switches during a fire?

What should be done with electrical switches during a fire?

• A. Activate them
• B. Deactivate them
• C. Ignore them
• D. Remove power to all equipment

Answer: (B)

In a fire, cutting electrical power to the affected circuits is crucial. Deactivating switches quickly shuts off power, reducing the risk of electrical arcing, further ignition, or equipment malfunction that could hamper firefighting or evacuation. It also makes it safer for crew to operate and for emergency systems to function as intended. Activating switches would feed power back in and worsen the hazard, while ignoring them leaves live electrical circuits that can spark or fail. Removing power to all equipment is impractical in flight because some essential systems may need to remain powered; the goal is to deenergize the nonessential circuits to minimize risk.

In a fire, cutting electrical power to the affected circuits is crucial. Deactivating switches quickly shuts off power, reducing the risk of electrical arcing, further ignition, or equipment malfunction that could hamper firefighting or evacuation. It also makes it safer for crew to operate and for emergency systems to function as intended. Activating switches would feed power back in and worsen the hazard, while ignoring them leaves live electrical circuits that can spark or fail. Removing power to all equipment is impractical in flight because some essential systems may need to remain powered; the goal is to deenergize the nonessential circuits to minimize risk.