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Sheath

Definition

A sheath is the outer covering, or jacket, over the insulated conductors of a cable, providing mechanical protection for the conductors.

Detailed Explanation

A sheath is the outermost covering of a cable, applied over the insulated conductors to protect them. Functioning as the jacket of the cable, the sheath provides mechanical protection against abrasion, impact, and the environment, while holding the internal components together as a unit. It is the layer that faces the outside world and shields everything within.

The material of the sheath is chosen to suit the environment and demands of the application, with options offering resistance to moisture, oils, abrasion, sunlight, or flame as needed. In some cable, the sheath may be metallic, providing both mechanical protection and shielding.

In commercial and industrial cable, the sheath is essential to durability and the protection of the conductors and insulation it covers. Recognizing the role of the sheath helps in understanding how cable withstands its environment.

Because the material of the sheath is chosen to suit the environment, options offer resistance to moisture, oils, abrasion, sunlight, or flame as needed, and in some cable the sheath may be metallic, providing both mechanical protection and shielding as the outermost layer.

Recognizing the role of the sheath helps in understanding how cable withstands its environment, with the outer covering protecting the conductors and insulation it encloses against abrasion, impact, and exposure.

At Windy City Wire, the focus on quality low-voltage cable includes attention to the sheath, or jacket, that protects each construction. Supplying cable with a sheath suited to its environment helps ensure dependable, long-lasting performance in commercial and industrial systems.

Applications / Use Cases

  • Outer protective covering of cable
  • Mechanical protection for conductors
  • Holding cable components together
  • Environmental resistance
  • Metallic or nonmetallic sheaths

Related Terms

  • Jacket
  • Insulation
  • Conductor
  • Moisture Resistance
  • Abrasion Resistance