Trunking & conduit pipes

Trunking & Conduit Pipes

Trunking and conduit pipes are essential cable management systems used to hide, protect, and organise electrical and data cables in residential, commercial, and industrial installations. They improve safety, reduce clutter, and help create a clean, professional finish in any space.

What is Cable Trunking?

Cable trunking is a rectangular or square enclosure with a removable or hinged cover. Cables are placed inside the channel, keeping them neatly grouped and protected.

   
• Used for surface-mounted installations indoors
   
• Can also accommodate power outlets, network ports, or small electrical modules
   
• Protects cables from physical damage and tampering
   
• Available in multiple sizes and colours
   
• PVC trunking can be painted with PVC-compatible paint to match interiors

Trunking is widely used in offices, retail spaces, and homes where rewiring into walls is not practical.

Basic Tools for Installing Trunking

   
• Drill or mounting adhesive/tape for wall installation
   
• Hacksaw, cutting blade, or grinder for sizing
   
• Measuring tape and marking tools for alignment

What is Electrical Conduit?

Conduit is a round protective tube used to route electrical wiring through buildings and external environments. Unlike trunking, conduit is typically hidden inside walls, ceilings, floors, or underground systems.

   
• Available in rigid or flexible forms
   
• Common materials include PVC, galvanized steel, and sometimes aluminium
   
• Standard South African sizes include 20mm, 25mm, and 32mm PVC conduit
   
• Outdoor and industrial installations often use galvanized steel for durability

Conduit systems are commonly used for permanent electrical wiring installations where safety and long-term protection are critical.

Conduit Accessories

   
• Junction boxes for branching circuits
   
• Surface boxes for external mounting points
   
• Wall boxes for sockets and switches

Key Differences: Trunking vs Conduit

   
• Trunking: Surface-mounted, easy access, used for visible cable runs
   
• Conduit: Embedded or concealed, used for permanent wiring protection
   
• Access: Trunking allows easy modification, conduit requires more installation effort
   
• Aesthetic: Trunking is visible but neat, conduit is fully hidden

Modern Alternatives to Trunking & Conduit

While trunking and conduit remain industry standards, several alternatives are used in modern installations depending on cost, aesthetics, and flexibility.

Common Alternatives

   
• Surface cable raceways: Slim plastic channels used for light cable runs in homes and offices
   
• Cable clips and ties: Low-cost solution for short, exposed runs
   
• Cable sleeves: Flexible wrap-around covers for grouping multiple cables
   
• Floor cable covers: Rubber or plastic covers for safe cable crossings in walkways
   
• Wireless solutions: Reduce cable dependency for networking and peripherals
   
• Underfloor or ceiling cable trays: Used in commercial buildings for structured cabling

When Alternatives Are NOT Recommended

Although alternatives can be convenient, they are not suitable in all environments. Trunking and conduit remain necessary in many cases.

   
• High-voltage electrical wiring: Must use proper conduit for safety compliance
   
• Outdoor or underground installations: Require sealed conduit for moisture and impact protection
   
• Fire-rated buildings: Building codes often require certified conduit systems
   
• Industrial environments: Mechanical protection from heat, chemicals, or impact is essential
   
• Permanent electrical infrastructure: Conduit is required for long-term reliability and inspection access

Why Trunking & Conduit Still Matter

Even with modern cable management alternatives, trunking and conduit remain the most reliable solutions for electrical safety, durability, and compliance. They ensure cables are protected from damage, reduce fire risk, and support structured installations in both residential and commercial environments.

Summary

Trunking and conduit pipes are essential cable management systems used to conceal and protect electrical wiring. Trunking provides easy-access surface cable routing, while conduit offers concealed, high-protection installations. Modern alternatives exist, but conduit remains critical for safety, compliance, and permanent electrical infrastructure.