What tool should every rescue organization have to detect energized wires?

The hot stick is an essential tool for detecting energized wires due to its design and purpose. It is a long insulating pole that allows rescue personnel to safely reach and test electrical wires from a distance, minimizing the risk of electric shock. The hot stick can be equipped with various attachments, such as voltage detectors or other assessment devices, and is specifically engineered to handle high voltages, making it ideal for use in emergency situations where live wires may be present.

In contrast, the other tools listed serve different functions. A multimeter is a versatile device for measuring voltage, current, and resistance but requires direct contact with the electrical system, which is not safe in an emergency involving potential live wires. Theodolites are used for measuring angles in horizontal and vertical planes, primarily in surveying, and do not relate to electrical safety. Clamp meters, while useful for measuring current without direct electrical contact, are not specifically designed to detect energized lines at a distance and may still pose risks if used improperly in potentially live environments. Thus, the hot stick is the most appropriate tool for rescuers to safely detect energized wires.