Section 318-4 Uses Not Permitted states that “Cable tray systems shall not be used in environmental air spaces except as permitted in Section 300-22 to support wiring methods recognized for use in such spaces. Cable tray is a mechanical support system just as strut is a mechanical support system. Plenum-rated Chapter 7 and Chapter 8 wiring methods are permitted in plenum spaces according to the following: (2) Cable Tray Systems. Metal cable tray systems can be installed to. The primary rulebook used in the safe use of cable trays is NEC Article 392. You should consider it as a series of instructions that make the buildings resistant to. Prohibition of Cables Inside Air Ducts: National and local codes strictly forbid running electrical cables within ventilation ducts to prevent fire hazards and obstruction of airflow.
[pdf] Under normal circumstances electrode is not required to be adjusted. This guide will help you understand the importance of electrode replacement, how to monitor electrode usage, and step-by-step instructions to ensure your fusion splicer operates at. Turn Off the Splicer: Always power off and unplug the machine to ensure safety. Poor splice quality and high splice loss. Increased rework and field downtime. For technicians using Fujikura machines, understanding how to maintain and replace this core component is critical. The 90R will start to warn you to replace the electrodes and you should follow the “Replace electrodes” procedure in the. This guide explains how to replace fusion splicer electrodes, along with clear recommendations on how frequently the electrodes need to be replaced.
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