Which equipment is used for self-rescue from a bucket truck?

The use of rappelling loops, descent line, and a carabiner is specifically designed for situations where self-rescue from heights is necessary, such as from a bucket truck. These pieces of equipment allow an individual to safely descend from an elevated position in a controlled manner. Rappelling loops are essential for attaching the descent line securely, and the carabiner provides a reliable connection point for safety as one descends.

In contrast, a safety harness and helmet are important for personal protection when working at heights but do not provide a means for self-rescue. Meanwhile, a first aid kit and fire extinguisher serve to address emergency situations once a person is on the ground or if an incident occurs but cannot aid in the descent from an elevated position. Communication devices and GPS are useful for coordinating rescue efforts or navigating but are not tools for self-rescue when one is stuck in a bucket truck. Therefore, the correct answer focuses on the specialized equipment necessary for self-rescue operations.