What should be done to extinguish a fire in the oven?

Turning off or disconnecting the appliance is the correct action to take when extinguishing a fire in the oven. This step is crucial because it removes the source of heat that is fueling the fire. By cutting off power to the oven, you help to prevent the fire from spreading or intensifying, allowing for safer management of the situation.

Opening the oven door can be dangerous, as it allows oxygen to enter and can potentially feed the fire, causing it to flare up. Throwing water inside the oven is also hazardous, particularly if the fire involves grease or electrical components; introducing water can lead to splashing of hot grease, intensifying the hazard. While removing food items might seem logical, it could be risky if there is an active fire, as this might open the door to more oxygen and exacerbate the situation.