Ducting Layout

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OBJECTIVES:
• Design cable routing systems using ducts and trenches.
• Ensure proper segregation, bending radius, and future expansion.

KEY TOPICS:
• Duct bank design (material, spacing, depth, concrete encasement).
• Trench design (cover, drainage, cable supports).
• Segregation of power, control, and communication cables.
• Derating factors for buried cables.
• Crossing and proximity to other services.

PRACTICAL FOCUS:
• Develop ducting layout for switchgear to transformer (100m).
• Exercise: Calculate duct size for 12 cables.
• Case study: Cable failure due to poor duct design.

SUGGESTED DIAGRAMS:
• Duct bank cross-section.
• Overall, ducting route plan.
• Trench detail drawing.

KEY TAKEAWAYS:
• Ability to design practical ducting systems.
• Understanding of thermal and mechanical constraints.

STANDARDS & REFERENCES:
• IEC 60364, NEC (Article 300), IEEE 525.
• Client ducting standards.

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

PREREQUISITES:
• Basic knowledge of cable types and ratings.