Electrical Installation

Electrical Engineering · Level 6  ·  7 Chapters

Compiled by: Beatrice Jepkosgei

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What Electrical Installation covers

Electrical Installation in Electrical Engineering Level 6 teaches how to survey a site, draw and size a system, install it, test it and hand it over. The survey looks at hazards, PPE, utility services, installation route, building type and on-site measurements. Drawings use electrical symbols, architectural and electrical plans, CAD and approval authorities, and name wiring systems such as surface, conduit and trunking. Sizing counts luminaires, loads, cable, protective devices and accessories, balances phases and ends in working drawings and a BOQ. Installation covers safety, tools, cable management, joints, lugging, glanding, earthing and final circuits. Testing, maintenance and commissioning use test equipment, fault diagnosis, isolation points, functionality tests, user training and completion documents.

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Careers after Electrical Installation

The abilities you develop in this unit open doors to many real-world workplaces across Kenya. Whether you join a construction crew, support a hospital’s power system, or start your own electrical service, the skills you master will be the foundation for safe, reliable, and profitable electrical work.

  • Construction firms building new housing estates in Kiambu and Machakos - you follow health-and-safety procedures on site, keeping yourself and the crew protected while installing power lines for dozens of homes.
  • Electrical contractors handling commercial fit-outs in Nairobi’s Central Business District - you gather client needs, translate them into clear specifications, and earn a fee for each detailed survey you produce.
  • Rural electrification projects in Turkana and Samburu counties - you assess challenging site conditions, map out safe installation routes, and receive project-based payments from development agencies.
  • Industrial parks in Athi River and Thika - you prepare and share comprehensive site-survey reports with engineers and supervisors, ensuring smooth coordination and timely invoicing for your services.
  • Design studios that create electrical schematics for hotels on the coast - you apply international electrical symbols correctly, producing drawings that command higher rates for precision and compliance.
  • Electrical supply companies serving schools in Nakuru and Eldoret - you select the appropriate wiring system for each building, charging clients for material selection and installation planning.
  • Engineering offices that draft preliminary circuit concepts for data-centre projects in Nairobi - you produce final circuit concepts and preliminary drawings that meet client requirements, earning design consultancy fees.
  • Regulatory approval offices in county councils - you submit electrical drawings for approval, receiving remuneration for each approved set of plans that speeds up construction timelines.
  • Load-calculation specialists for manufacturing plants in Thika - you estimate electrical loads accurately, allowing you to bill for detailed load-study reports that prevent costly over- or under-sizing.
  • Electrical maintenance teams in county referral hospitals - you determine the correct protective devices and calculate cable sizes according to IET standards, earning a steady salary for keeping critical equipment running safely.
  • Solar-installation enterprises in Nakuru and Kisumu - you identify accessory ratings and perform phase-balancing calculations, adding value to renewable-energy projects and increasing your profit margins.
  • Technical drafting units for large-scale infrastructure in Mombasa port - you prepare working drawings that match design specifications, receiving payment per drawing set for high-precision documentation.
  • Quantity-surveying firms preparing Bills of Quantities for shopping-mall projects in Westlands - you compile accurate BOQs, allowing you to charge for detailed cost estimations that guide client budgeting.
  • Contract administration departments of private construction companies - you draft contract documents that meet organisational requirements, earning fees for each legally sound and clear contract you produce.
  • Small-scale electrical service providers offering housekeeping and site-clean-up in residential renovations across Nairobi suburbs - you implement EHS and OSHA housekeeping practices, charging clients for a tidy, safe completion that enhances your reputation.

Mastering these skills means you can move confidently from one thriving Kenyan workplace to another, building a career that is both safe and financially rewarding. Keep pushing forward - you’ve got the tools to power Kenya’s future!

Chapters

14 past papers for this unit →

What Electrical Installation covers: 70 main topics in 7 chapters

1. Conduct site survey

  1. 1.1 Relevant clauses in appropriate Acts
  2. 1.2 Relevant regulations and standards
  3. 1.3 Common hazards, their sources of danger and preventive measures e.g. burns, cuts, electric shock, electric fire, falling from heights, falling objects, noise, dust, chemicals etc
  4. 1.4 Safe and correct handling, use, maintenance and storage of different types of PPE
  5. 1.5 Utility services
  6. 1.6 Electrical parameters e.g. Voltage level, Earth resistance etc
  7. 1.7 Installation route
  8. 1.8 Type of installations
  9. 1.9 Type of building
  10. 1.10 Utilities available
  11. 1.11 Installation conditions e.g. temperature, humidity, moisture
  12. 1.12 Taking measurements on site
  13. 1.13 Survey report

2. Prepare electrical drawings,

  1. 2.1 Meaning of working drawings
  2. 2.2 Drawing standard electrical symbols
  3. 2.3 Drawing of electrical diagrams
  4. 2.4 Reading and Interpretation of architectural drawings
  5. 2.5 Reading and Interpretation of electrical drawings
  6. 2.6 Use of Computer Aided Design (CAD) applications e.g. AutoCAD
  7. 2.7 Relevant approval authorities
  8. 2.8 Types of wiring system e.g. Surface, Conduits, Trunking, etc

3. Perform installation system sizing

  1. 3.1 Electrical parameters
  2. 3.2 Installation route
  3. 3.3 Type of installations
  4. 3.4 Type of building
  5. 3.5 Installation conditions e.g. temperature, humidity, moisture
  6. 3.6 Taking measurements on site
  7. 3.7 Determination of number of luminaries
  8. 3.8 Types of loads e.g. single phase load, three-phase load,etc
  9. 3.9 Determining cable
  10. 3.10 Protective devices
  11. 3.11 Accessories
  12. 3.12 Phase balancing
  13. 3.13 Preparation of working drawings
  14. 3.14 Preparation of BOQ
  15. 3.15 Contract documents e.g. contract letter, BOQ, working drawings, etc

4. Install electrical system

  1. 4.1 Safety procedures
  2. 4.2 Handling tools, equipment and materials
  3. 4.3 Cables management systems;
  4. 4.4 Accessories used in Electrical installation e.g. Lamp holders, Conduits, Ceiling roses, Patress etc
  5. 4.5 Installation procedures e.g Marking out, cutting, bending, threading, chiselling, trenching
  6. 4.6 Joints and terminations
  7. 4.7 Preparation of cable ways and wiring systems;
  8. 4.8 Cable lugging, glanding, labeling and dressing
  9. 4.9 Earthing and protection systems
  10. 4.10 Installation of final circuits
  11. 4.11 Operation of electrical system
  12. 4.12 Housekeeping

5. Perform electrical installation testing

  1. 5.1 Reading and interpretation of appropriate manuals
  2. 5.2 Identification of test equipment;
  3. 5.3 Meaning of terms
  4. 5.4 Types of tests
  5. 5.5 Inspection
  6. 5.6 Testing tools
  7. 5.7 Procedure for conducting identified test;
  8. 5.8 Recording and verification of results against appropriate standards
  9. 5.9 Safety precautions to be observed

6. Perform electrical installation maintenance

  1. 6.1 Safety procedures maintenance
  2. 6.2 Meaning of terms
  3. 6.3 Maintenance
  4. 6.4 Fault diagnosis/troubleshooting
  5. 6.5 System isolation points
  6. 6.6 System tests e.g. continuity test, functionality test, polarity test etc
  7. 6.7 Maintenance report and records

7. Commission electrical installation

  1. 7.1 Commissioning
  2. 7.2 End-user training
  3. 7.3 Operation manuals and brochures
  4. 7.4 Preparation of completion documents
  5. 7.5 Functionality test
  6. 7.6 Project handover

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