Which type of premises cable installation uses compressed air to reduce tension on the cable?

Which type of premises cable installation uses compressed air to reduce tension on the cable?

• A. Air Blown Fiber (ABF)
• B. Direct Burial Cable
• C. Aerial Cable
• D. Wet-Dry Cable

Answer: (A)

The method being tested uses compressed air to push or blow fiber through conduits, which lowers the tension on the cable during installation. Air Blown Fiber installs fibers by blowing them through a duct with a controlled stream of compressed air, creating forward movement and reducing pulling forces and friction. This makes it especially suitable for long runs or complex duct networks where pulling would risk fiber damage or require heavy equipment. The other options don’t use the air-blown technique: Direct Burial involves placing cable underground via digging and typically pulling it into place, which uses tension; Aerial Cable is run above ground on poles and subject to wind and sag, also relying on pulling/tension; Wet-Dry Cable refers to a cable design that can handle moisture but does not describe the installation method using compressed air to reduce tension.

The method being tested uses compressed air to push or blow fiber through conduits, which lowers the tension on the cable during installation. Air Blown Fiber installs fibers by blowing them through a duct with a controlled stream of compressed air, creating forward movement and reducing pulling forces and friction. This makes it especially suitable for long runs or complex duct networks where pulling would risk fiber damage or require heavy equipment. The other options don’t use the air-blown technique: Direct Burial involves placing cable underground via digging and typically pulling it into place, which uses tension; Aerial Cable is run above ground on poles and subject to wind and sag, also relying on pulling/tension; Wet-Dry Cable refers to a cable design that can handle moisture but does not describe the installation method using compressed air to reduce tension.