Which item is NOT listed as a part of the underground cable components?

• A. Jacket
• B. Metallic shield
• C. Polyethylene
• D. Glass fiber wrapping

Answer: (D)

The concept being tested is understanding the typical components that make up an underground power cable. A jacket is the outer protective layer that shields the inner parts from moisture, chemicals, and abrasion. A metallic shield provides a conductive path for fault current and helps control electromagnetic interference. Polyethylene serves as the insulation material, giving dielectric strength and a moisture barrier between the conductor and the shielding/jacket. Glass fiber wrapping is not a standard part of underground electrical cable construction; it’s not typically listed as a component in these cables and is more associated with other types of cables or structural reinforcement in different contexts. Therefore, glass fiber wrapping is the item not listed as part of the underground cable components.