In medium- and high-voltage applications, what aspect of cables is crucial for safety?

In medium- and high-voltage applications, shielding and grounding are essential for safety due to their roles in protecting both equipment and personnel from electrical hazards. Shielding helps contain the electromagnetic fields generated by the cables, which is important for preventing interference with electronic devices and minimizing exposure to high-frequency noise. It also helps prevent accidental contact with live conductors, reducing the risk of electrical shock.

Grounding serves as a critical safety measure by providing a low-resistance path for fault currents to safely dissipate into the earth. This is particularly important in high-voltage systems where the potential for significant electrical faults exists. Proper grounding ensures that in the event of insulation failure or other faults, excess electrical energy is directed safely away from people and equipment, minimizing the risk of electrical fires, equipment damage, or personal injury.

While color coding, clearance from buildings, and installation length are also relevant considerations in cabling practices, they do not directly address the electrical safety mechanisms necessary to handle the inherent risks associated with medium- and high-voltage applications. Thus, shielding and grounding stand out as the primary aspects crucial for ensuring safety in these environments.