What are the conductors in armored cable protected by?

The conductors in armored cable are protected by spiral-wound outer metal sheathing. This metal sheath serves multiple vital functions: it not only provides physical protection against mechanical damage but also offers a degree of electromagnetic interference shielding. The robust nature of the metal sheath can withstand environmental factors that would otherwise harm the insulated conductors within, ensuring the integrity and safety of the electrical system.

Additionally, the use of spiral-wound metal sheathing enhances the grounding capabilities of the cable, allowing it to safely dissipate any stray electrical currents. This feature is particularly important in scenarios where electrical safety is paramount, such as in commercial settings or areas prone to physical impacts.

In contrast, plastic insulation, rubber insulation, and wooden casing do not offer the same level of mechanical protection or grounding capabilities that armored cables require. While plastic and rubber insulations are important for protecting the individual conductors from short circuits and wear, they do not provide the external armor that helps protect against impact and abrasion. Wooden casing, although offering some structural support, does not align with the modern standards of electrical safety and protection provided by armored cables.