Telecommunications Craft Skills (Performance Verification)
Domain 2: Telecommunications Craft Skills
This performance-verification domain checks whether you can execute a task safely and to standard: inspect and set up, install cable, terminate copper or fiber, test, and document. Graders look for sequence, tool choice, workmanship, and whether the finished link passes.
Core procedures
- Safety first: inspect ladders and lifts, use PPE, identify lockout/tagout and overhead or underground hazards, and keep the work area clear.
- Cable support: support horizontal UTP at intervals not exceeding 5 ft (1.5 m) unless the manufacturer or TIA-568 specifies tighter; use J-hooks or listed supports. Avoid cinching ties and maintain bend radius.
- Termination: strip only enough jacket; preserve pair twists to within 1/2 in (13 mm) of the termination; use the correct plug or jack and tool; do not nick conductors.
- Fiber: inspect and clean both endfaces before mating; use a one-click cleaner or lint-free wipe with isopropyl alcohol; re-inspect; never look into a live fiber.
- Test and document: reference the tester, run wire map, length, and performance tests, save results, label both ends, and record test IDs.
Worked example
Task: terminate a Cat 6 jack and certify the link. The tester reports a split pair on pins 3 and 6. Reasoning: the conductors are in the right pin positions, but the orange pair was split across 3 and 6 instead of landing on 1 and 2. Re-terminate with each pair on its assigned pins, keep untwisted length under 1/2 in, then retest. If the failure were length instead, check slack, patch cords, and the tester's NVP setting.
Traps
- Over-untwisting conductors, which raises NEXT and fails certification.
- Using cable ties tight enough to deform the jacket.
- Skipping endface inspection after cleaning fiber.
- Testing with a tone generator or continuity tester and calling it certification.
- Forgetting firestopping, labeling, or saving test results even when the link works.