CABLE TRAY LAYOUT – SWITCHGEAR AND CONTROL ROOM

OBJECTIVES:
• Design cable tray routing for power and control cables.
• Ensure segregation, support spacing, and fill ratio.

KEY TOPICS:
• Cable tray types (ladder, perforated, solid bottom).
• Tray sizing and fill ratio (NEC/IEC recommendations).
• Segregation of power, control, and communication cables.
• Tray supports, spacing, and fire barriers.
• Routing from switchgear to control room.

PRACTICAL FOCUS:
• Design cable tray layout for switchgear to the control room.
• Exercise: Calculate tray width for 30 cables.
• Case study: Overfilled tray causing overheating.

SUGGESTED DIAGRAMS:
• Cable tray routing plan.
• Tray cross-section with segregation.
• Tray support detail.

KEY TAKEAWAYS:
• Ability to design practical cable tray systems.
• Understanding of fill ratio and segregation requirements.

STANDARDS & REFERENCES:
• IEC 60364, NEC 392, NEMA VE1/VE2.
• Client tray standards.

CERTIFICATION & DELIVERY:
• Certificate of Completion awarded.
• Delivery Mode: Online (On-demand).

PREREQUISITES:
• Completion of Session 05 (Ducting).