What generally requires the use of a tag line when being hoisted up to a roof?

The use of a tag line is typically associated with items that may be cumbersome or difficult to control during the hoisting process, particularly when they are being elevated to a rooftop. In this context, smoke ejectors are often larger and can be awkward to maneuver, making it essential to use a tag line for safety. The tag line helps ensure that the smoke ejector can be stabilized and guided into position without risking injury to personnel or damage to the equipment.

In contrast, fire hoses may be manageable without the need for a tag line, as they are more flexible and can be directed easily. Ventilation fans, while sizable, can often be handled more directly by personnel without the need to control their descent or ascent with a tag line. Hand tools are generally small and light enough to be hoisted without the added complexity of a tag line, allowing for straightforward handling during operation. Thus, the requirement of a tag line for smoke ejectors reflects the need for enhanced control and safety when managing larger, bulkier equipment.