When bundling open wiring in aircraft, what is a recommended practice?

When bundling open wiring in aircraft, it is essential to limit the number of cables to minimize damage from faults. This practice is crucial as it helps reduce potential interference, short circuits, or cascading failures that can arise from too many wires being bundled together. Fewer cables generally mean less complexity in the wiring harness, making it easier to diagnose issues and maintain the system. It also decreases the risk of overheating and protects the integrity of the insulation, thereby enhancing overall safety and reliability in the aircraft's electrical systems.

The other options, while relevant to electrical practices, do not have the same primary focus on fault minimization through cabling quantity management. For instance, using shielded cables for bonding provides protection against electromagnetic interference, but it does not address the immediate concern of fault damage as effectively as limiting the number of cables. Maintaining a minimum bend radius is important for preventing stress on wires but does not directly relate to fault damage. Utilizing heat-resistant materials is valuable for operating in extreme environments, yet it does not mitigate fault risks associated with excessive wiring. Overall, limiting the number of bundled cables stands out as a key practice for safeguarding the integrity of an aircraft's electrical system.