What does SWA stand for in cable terminology?

What does SWA stand for in cable terminology?

• A. Shielded Wire Armour
• B. Steel Wire Armour
• C. Steel Core Cable
• D. Steel Wire Antenna

Answer: (B)

Steel Wire Armour is the protective layer of steel wires wrapped around a cable to give mechanical strength and crush protection. This armour isn’t meant for carrying current or providing EMI shielding; its job is to resist physical damage in demanding environments, like underground ducts or exposed outdoor runs. The armour can also be bonded to earth in some installations to help with safety. Because the term describes a protective wrap of steel wires, it’s different from a shielding layer that reduces electromagnetic interference, and it’s not referring to the conductive core of the cable or to an antenna function.

Steel Wire Armour is the protective layer of steel wires wrapped around a cable to give mechanical strength and crush protection. This armour isn’t meant for carrying current or providing EMI shielding; its job is to resist physical damage in demanding environments, like underground ducts or exposed outdoor runs. The armour can also be bonded to earth in some installations to help with safety.

Because the term describes a protective wrap of steel wires, it’s different from a shielding layer that reduces electromagnetic interference, and it’s not referring to the conductive core of the cable or to an antenna function.