After powering up the generator, which equipment should be hooked up?

When powering up a generator at a fire scene, it is essential to prioritize equipment that is necessary for immediate safety and functionality. Hooking up smoke ejectors and lights is a critical step because they directly contribute to visibility and ventilation in a hazardous environment. Smoke ejectors help remove smoke from a structure, improving air quality and visibility, which is crucial for the safety of both firefighters and civilians. Additionally, lights are necessary for illuminating the scene, especially during low-visibility conditions, which enhances the operational efficiency and safety of personnel.

The other options, while also important in various contexts, do not have the same immediate impact on managing the conditions at the incident scene. Hoses and nozzles are critical for firefighting, but they are typically deployed following the establishment of a secure area and may not be the first priority when powering up a generator. Extrication tools and hydraulic pumps are vital but generally come into play after ensuring the scene is safe and visible. Therefore, prioritizing smoke ejectors and lights aligns best with the immediate operational needs after activating a generator.