BICSI Technician cheat sheet

Horizontal cable maximum length is 90 m (295 ft) of permanent link, plus up to 10 m of patch cords for a 100 m channel.

Balanced twisted-pair bend radius: 4x cable OD for installed (unloaded) cable and 8x OD during pulling.

Fiber optic cable bend radius: 10x cable OD installed and 20x OD under pull tension unless manufacturer specifies otherwise.

Maximum pull tension for 4-pair copper is typically 110 N (25 lbf); for 12-fiber indoor fiber cable, follow the manufacturer's rated limit.

Cable supports in horizontal runs: no more than 1.5 m (5 ft) spacing for bundled or horizontal cable, and within 300 mm (12 in) of boxes.

Do not exceed 25% fill of conduit cross-section for a single cable pull; use 40% fill for two cables and 40% for three or more per common fill tables.

Separate unshielded twisted-pair from power circuits: minimum 2 in (50 mm) from 120/240 V lines and 4 in (100 mm) from higher-voltage or fluorescent fixtures unless a barrier is used.

Terminate per T568A or T568B consistently on both ends of a cable; a mixed pinout creates a crossover and will fail certification.

Hierarchy: entrance facility (EF) -> equipment room (ER) -> backbone -> telecommunications room (TR) -> horizontal cabling -> work area (WA).

One TR should serve no more than 1,000 m2 (10,000 ft2) of usable floor area, and horizontal cable runs should not exceed 90 m.

TR serving area: no point should be more than 90 m of cable from the TR; if exceeded, add a TR or use a consolidation point.

Backbone distance: single-mode fiber supports up to 3,000 m; multimode OM3/OM4 supports 300 m for 10GBASE-SR (OM4 up to 400 m).

Consolidation point (CP) allows a horizontal cable to be split into a permanent link and a short patch; only one CP per horizontal run is permitted.

Entrance facility must provide a minimum of 300 mm (12 in) of clear working space around terminating hardware and grounding.

TR door must be at least 910 mm (36 in) wide and swing outward, with a minimum 760 mm (30 in) clearance in front of racks.

Pathway fill: J-hooks support up to 50% of their rated capacity; cable tray fill should not exceed 50% of usable cross-section.

ANSI/TIA-568 governs structured cabling performance; ANSI/TIA-569 covers pathways and spaces; ANSI/TIA-606 covers labeling; ANSI/TIA-607 covers grounding and bonding.

NFPA 70 (NEC) Article 800 covers communications circuits; Article 250 covers grounding; Article 300 covers wiring methods.

NFPA 75 and NFPA 76 address fire protection in IT equipment rooms and telecommunications facilities.

Grounding: telecommunications bonding backbone (TBB) must be bonded to the building's grounding electrode system; single-point ground is preferred.

Grounding conductor sizing: #6 AWG copper for TBB, #6 AWG for telecommunications grounding busbar (TGB) to TBB, and #6 AWG for TGB to service ground.

Class 2/3 circuits must be separated from Class 1 and power circuits by at least 2 in (50 mm) or a barrier; Class 2/3 cannot be in the same raceway as power.

Firestopping: penetrate fire-rated walls with approved firestop systems; intumescent putty or sealant must match the listed system for the penetration.

Personal protective equipment for cabling: safety glasses, hard hat, and cut-resistant gloves when pulling; lockout/tagout applies to energized circuits.

Labeling per TIA-606: each cable and port must have a unique identifier; labels must be legible and permanent, applied at both ends.

Pre-installation survey: verify pathway capacity, ceiling access, power availability, HVAC, and fire rating before ordering materials.

Work breakdown: sequence rough-in (pathways, sleeves), cable pulls, terminations, testing, labeling, and punch list.

As-built documentation must reflect actual installed conditions, including cable routes, lengths, and termination records.

Test reports: permanent link and channel tests must be submitted with pass/fail, length, attenuation, NEXT, and return loss per TIA-568.

Change orders: any deviation from the design (added drops, alternate pathways) requires written approval and revised as-built drawings.

Safety meetings and job hazard analysis (JHA) should be documented before work begins on energized or elevated work.

Punch list closure: track each deficiency with location, description, responsible party, and date corrected.

Schedule float: identify critical-path tasks; cable pulls and terminations must precede testing and certification.

Communication: weekly progress reports should include percent complete, issues, and upcoming inspections.