By the end of this chapter, you will be able to:
These skills will help you work confidently and professionally, ensuring both safety and quality in real-world trunking installations.
Mounting trunking work pieces is a critical stage in trunking system installation that ensures the electrical or data cables are securely and neatly housed. Proper mounting enhances safety, facilitates maintenance, and improves the aesthetics of installations across various sectors in Kenya, from county referral hospitals to retail businesses. This chapter explores the precise techniques of marking mounting points and managing trunking angles, both essential for durable and compliant installations.
Marking mounting points accurately is fundamental to the success of trunking installation. In Kenyan workplaces such as universities and county government offices, precise marking prevents misalignment, ensures regulatory compliance, and minimizes rework, which can be costly and time-consuming. This process sets the foundation for stable and secure trunking, accommodating the route and load demands of the installation.
Marking mounting points serves several vital purposes in trunking installation. First, it establishes exact locations where trunking supports will be fixed, ensuring alignment with architectural features and electrical plans. Second, it facilitates accurate drilling and fixing, preventing damage to walls or ceilings. Third, marking allows installers to plan for obstacles such as pipes or beams, optimizing trunking routes. Fourth, it supports adherence to safety standards by maintaining correct distances from electrical sources and fire hazards. Lastly, clear marking enhances communication among team members, reducing errors during installation.
The marking process requires specific tools and materials to ensure accuracy and efficiency. Common tools include tape measures for precise distance measurement, spirit levels to guarantee horizontal or vertical alignment, and pencils or markers suitable for the surface material. Additionally, chalk lines may be used for longer straight marks, while laser levels offer advanced precision in large installations. Protective equipment such as gloves and safety goggles are essential to protect installers during marking and subsequent fixing operations.
Achieving accurate marking involves systematic procedures aligned with project specifications. Initially, installers review electrical drawings and site plans to understand trunking routes. They then measure and mark the first mounting point, usually at a fixed distance from a reference edge such as a ceiling or floor. Using a spirit level or laser level, they extend marks along the planned route at intervals matching support spacing requirements. Checks for obstacles and adjustments for corners or junctions are incorporated before finalizing marks. This methodical approach ensures alignment and structural integrity.
Marking mounting points can encounter several challenges in Kenyan workplaces. Uneven surfaces in older county government buildings may distort measurements, requiring the use of adjustable mounting brackets. Poor lighting conditions in warehouses or retail stores can reduce visibility, mitigated by portable lighting equipment. Inconsistent wall materials, such as concrete mixed with plaster, demand appropriate marking tools to avoid smudging. Additionally, interruptions from other trades on-site necessitate clear marking documentation to avoid confusion. Effective planning and communication help overcome these challenges.
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Create a free accountThis chapter focused on the essential steps involved in mounting trunking work pieces for electrical installations. It began with marking mounting points accurately to ensure proper alignment and secure fixing of the trunking system. The discussion then covered different trunking angles, highlighting their importance in accommodating changes in direction and maintaining a neat installation. The process of mounting trunking work pieces was described in detail, emphasizing correct attachment methods to support the trunking securely. Attention was also given to housekeeping activities, underscoring the need for maintaining general cleanliness to provide a safe and efficient working environment. Finally, proper storage of tools and equipment was addressed, ensuring that materials are organized and protected to facilitate smooth workflow and prevent damage. Together, these elements contribute to a professional and durable trunking system installation.
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Steel tape measure 5 m | Wooden installation board 1200mm x 600mm |
| Carpenter pencil | |
| Spirit level 600mm | |
| Marking gauge | |
| Combination square |
| S/N | Item | Quantity |
|---|---|---|
| 1 | Wooden installation board 1200mm x 600mm | 1 Pc per Candidate |
| 2 | Steel tape measure 5 m | 1 Pc per Candidate |
| 3 | Carpenter pencil | 1 Pc per Candidate |
| 4 | Spirit level 600mm | 1 Pc per Candidate |
| 5 | Marking gauge | 1 Pc per Candidate |
| 6 | Combination square | 1 Pc per Candidate |
| 7 | Safety boots | 1 Pair per Candidate |
| 8 | Dust coat/overall | 1 Pc per Candidate |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: Marking trunking mounting points | |||
| Wore safety clothing including safety boots and dust coat (Award 1 or 0) | 1 | ||
| Handled hand tools and measuring instruments correctly (Award 2 or 0) | 2 | ||
| Measured and marked mounting points accurately within ±2mm (Award 4 or 0) | 4 | ||
| Used spirit level to ensure marks are level and aligned (Award 3 or 0) | 3 | ||
| Ensured uniform spacing of mounting points at 300mm centers (Award 3 or 0) | 3 | ||
| Performed good housekeeping by cleaning working area after marking (Award 2 or 0) | 2 | ||
| Sub-Total | 15 | ||
| PRODUCT CHECKLIST | |||
| Mounting points marked accurately at 1200mm length and 600mm width with 300mm spacing ±2mm (Award 5 or 0) | 5 | ||
| Marks are level and aligned as per working drawing (Award 4 or 0) | 4 | ||
| Marks are clear and visible for fixing trunking securely (Award 3 or 0) | 3 | ||
| Sub-Total | 12 | ||
| GRAND TOTAL | 27 | ||
Type: Individual
| Tools & Equipment | Materials |
|---|---|
| Spirit Level | PVC Trunking Angle Pieces 25mm x 25mm |
| Tape Measure 5m | Straight Trunking Sections 25mm x 25mm |
| Hack Saw | Trunking Buckle Clips |
| Screwdriver (Flat and Phillips) | Wood Screws 1 inch |
| PPE Kit (Safety Boots, Gloves, Dustcoat) |
| S/N | Item | Quantity |
|---|---|---|
| 1 | PVC Trunking Angle Pieces 25mm x 25mm | 6 Pcs per Candidate |
| 2 | Straight Trunking Sections 25mm x 25mm | 2 meters per Candidate |
| 3 | Trunking Buckle Clips | 12 Pcs per Candidate |
| 4 | Wood Screws 1 inch | 20 Pcs per Candidate |
| 5 | Spirit Level | 1 Pc per Candidate |
| 6 | Tape Measure 5m | 1 Pc per Candidate |
| 7 | Hack Saw | 1 Pc per Candidate |
| 8 | Screwdriver (Flat and Phillips) | 1 Pc per Candidate |
| 9 | PPE Kit (Safety Boots, Gloves, Dustcoat) | 1 Set per Candidate |
| Items to be Evaluated | Marks Available | Marks Obtained | Comments |
|---|---|---|---|
| TASK 1: Installation of Trunking Angles | |||
| Wore personal protective equipment (Safety boots, gloves, dustcoat) (Award 1 or 0) | 1 | ||
| Used measuring tape and marked accurate measurements within ±2mm (Award 1 for each accurate measurement of corners and bends) | 3 | ||
| Cut trunking angle pieces cleanly and to correct size using hack saw (Award 1 for each correctly cut angle piece) | 2 | ||
| Fixed trunking angle pieces firmly and level with screws (Award 1 for each firmly fixed and level angle piece) | 3 | ||
| Ensured trunking runs are straight and flat on surface (Award 2 or 0) | 2 | ||
| Formed neat and smooth 90º and 135º bends with trunking angles (Award 1 for each correctly formed bend) | 3 | ||
| Applied uniform spacing of buckle clips not exceeding 300mm (Award 2 or 0) | 2 | ||
| Sub-Total | 16 | ||
| PRODUCT CHECKLIST | |||
| Trunking angles installed with correct dimensions (25mm x 25mm), corners at 90º and bend at 135º ±2mm tolerance (Award 5 or 0) | 5 | ||
| Trunking runs are plumb, level, and securely fixed (Award 4 or 0) | 4 | ||
| Screws and buckle clips properly fixed with no loose components (Award 3 or 0) | 3 | ||
| Sub-Total | 12 | ||
| GRAND TOTAL | 28 | ||
At the start of this chapter we promised you would be able to:
Tick each one you can genuinely do.
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