During the decommissioning of an obsolete rack, a systems administrator must perform cable remediation on dozens of Category 6 network cables and two 30-amp power whips that run through overhead ladder trays in a plenum-rated ceiling. None of the conductors will be reused. Which action is the MOST appropriate to satisfy National Electrical Code (NEC) requirements and minimize fire and airflow hazards?
Trace each cable and power whip, disconnect both ends, pull the runs completely out of the ladder tray, and send the removed material for approved recycling.
Attach orange "NOT IN USE" tags to both ends of every conductor, then leave all wiring in place so it can be located easily if needed later.
Coil the unused cables on top of the rack, secure them with Velcro straps, and leave the power whips in the tray to avoid disturbing other circuits.
Cut the network and power cables flush with the rack entry point, cap the exposed conductors, and leave the remaining lengths inside the ladder trays.
The NEC defines abandoned cable as wiring that is no longer terminated at both ends and not tagged for future use. Article 800.2 and related provisions require that such conductors be removed-or clearly identified for future use-because idle cabling increases combustible fuel load, blocks pathways, and impedes cooling airflow. Completely tracing each run, disconnecting it at both ends, pulling it out of the tray, and recycling or otherwise disposing of the material eliminates the safety and compliance risks.
The other options do not satisfy code: simply coiling unused cable on the rack or cutting it flush leaves the bulk of the conductor in place, so the combustible mass and pathway blockage remain. Tagging cables as "not in use" without a genuine plan for reuse still violates NEC rules, which only allow retention when cables are explicitly identified and reserved for future service.
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