RCDD · Question #370
What is the maximum pulling force guideline for a 2 or 4 strand fiber cable?
The correct answer is C. 50 lbs. This question tests knowledge of the maximum pulling force guideline for low-strand-count fiber optic cable during installation.
Question
What is the maximum pulling force guideline for a 2 or 4 strand fiber cable?
Options
- A100 lbs
- B75 lbs
- C50 lbs
- D25 lbs
How the community answered
(19 responses)- A5% (1)
- C84% (16)
- D11% (2)
Why each option
This question tests knowledge of the maximum pulling force guideline for low-strand-count fiber optic cable during installation.
100 lbs far exceeds the rated tensile load for 2 or 4 strand fiber and would risk damaging the fiber strands or compromising the jacket integrity during a pull.
75 lbs exceeds the 50 lb guideline for small-count fiber cable and could induce micro-bending or stress damage to the optical fibers.
For 2 or 4 strand fiber optic cable, the industry-standard maximum pulling force is 50 lbs (approximately 222 N), as specified in ANSI/TIA-568 optical fiber cabling standards. Exceeding this tension can induce micro-bending or physically damage the glass fibers, causing permanent signal loss or cable failure. This limit applies specifically to smaller strand counts where the cable jacket and strength members provide limited tensile support.
25 lbs is below the actual maximum pulling guideline of 50 lbs for 2 or 4 strand fiber, unnecessarily restricting installation conditions without a technical basis in the standard.
Concept tested: Fiber optic cable maximum pulling tension guideline
Source: https://tiaonline.org/tia-standards/tia-568/
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