During electrical installation, how far should wire bundles be located away from fluid lines?

The best practice regarding the installation of wire bundles in relation to fluid lines is to position them above the fluid lines. This practice is primarily aimed at preventing contamination of the electrical system. If wires are placed above fluid lines, it reduces the risk of any leaks from the fluid lines coming into contact with the wires, which could potentially cause damage to the wire insulation or lead to electrical failures.

Keeping wire bundles elevated avoids the chance of fluid potentially dripping onto the electrical connections or wiring, which can lead to corrosion, short circuits, or other electrical issues. This approach is important in maintaining the integrity and reliability of the aircraft's electrical systems, ultimately contributing to the safety and proper functionality of the aircraft.

While the other options mention distances or proximity, they do not specifically address the contamination risk, which is a critical factor in safe electrical installations.