What is the primary function of an armored cable?

The primary function of an armored cable is to provide mechanical protection for the wires inside. Armored cables are designed with an outer layer of metal, typically steel or aluminum, which safeguards the inner conductors from physical damage, such as impact, abrasion, or rodent intrusion. This protective layer makes armored cables particularly useful in environments where they may be exposed to harsh conditions or where there is a risk of physical wear and tear.

In contrast, while electrical insulation is an important aspect of any wiring system, it is not the sole purpose of armored cables. Conducting signals through water is not applicable, as armored cables are intended for use in dry or damp locations but not submerged environments. Supporting overhead structures also does not relate to the function of armored cables, as they are not designed to bear significant loads or provide structural support. Overall, the design and purpose of armored cables focus on the protection of the wires themselves, ensuring safe and reliable electrical installations in a variety of settings.