Get a complete breakdown of the ongoing NECO 2025 Electrical Installation and Maintenance Work exam, including the timetable, exam structure, key topics, sample questions (objective and essay), preparation tips, and grading guide to help students succeed in this technical subject.
Table of Contents
- Introduction
- NECO 2025 Timetable for Electrical Installation
- Exam Structure
- Key Topics to Revise
- Sample Objective Questions
- Sample Essay Questions
- Exam Tips
- Grading Guide
- Meta Description
Introduction
Electrical Installation and Maintenance Work is a trade subject offered in NECO to test students’ knowledge and practical skills in electrical wiring, maintenance, safety, and power supply systems. It prepares candidates for careers in technical fields or entrepreneurship in electrical services.
Timetable for NECO 2025
- Paper I (Practical): Monday, 16th June 2025 — 9:00 AM to 12:00 PM
- Paper II & III (Essay & Objective): Friday, 11th July 2025 — 10:00 AM to 12:00 PM
Exam Structure
- Paper I: Practical (3 hours)
Candidates are required to carry out hands-on tasks such as wiring circuits, installing sockets, and performing electrical tests like continuity and insulation resistance. - Paper II: Essay (60 marks)
Candidates answer four questions from a set of six or seven structured essay questions. These questions test understanding of tools, electrical principles, safety, diagrams, installation methods, and fault diagnosis. - Paper III: Objective (40 marks)
This section contains 40–50 multiple-choice questions based on the full syllabus.
Key Topics to Revise
- Ohm’s law and basic electrical formulas
- Electrical tools and their uses
- Wiring systems: surface, conduit, cleat, etc.
- Electrical components: resistors, fuses, switches, sockets
- Safety procedures and first aid
- Earthing and protection devices
- Circuit diagrams and symbols
- Power supply systems: single and three-phase
- Maintenance procedures and testing
- Entrepreneurship and pricing of electrical services
Sample Objective Questions
- A device used to measure electric current is
A. Voltmeter
B. Ammeter
C. Ohmmeter
D. Wattmeter
Answer: B - Which of these materials is a good conductor of electricity?
A. Rubber
B. Plastic
C. Copper
D. Wood
Answer: C - The unit of electrical resistance is
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C - The method of wiring used for temporary installation is
A. Conduit
B. Cleat
C. Surface
D. Trunking
Answer: B - Which tool is used to check the presence of electric current in a conductor?
A. Hammer
B. Screwdriver
C. Tester
D. Spanner
Answer: C
Sample Essay Questions
- State and explain Ohm’s Law. Give one application in electrical installation.
- With the aid of a diagram, explain how a one-way switch controls a lamp.
- List five electrical tools and explain their uses.
- Describe three types of electrical wiring systems and where each is used.
- Explain the steps involved in testing a completed lighting circuit for faults.
Exam Tips
- Revise the correct symbols and be able to draw simple electrical circuits neatly.
- Memorize key formulas such as V = IR, P = VI, and be able to apply them in calculations.
- Practice past NECO and NABTEB questions especially for objective questions.
- During the practical, follow safety rules strictly and double-check your connections before testing.
- Label all diagrams clearly and use standard electrical symbols.
- In essays, define key terms, explain points with clarity, and give examples where applicable.
- Use technical language where necessary and avoid vague terms.
- For the objective section, manage your time wisely and do not spend too long on any single question.
Grading Guide
| Grade | Score Range | Meaning |
|---|---|---|
| A1 | 75 – 100 | Excellent |
| B2 | 70 – 74 | Very Good |
| B3 | 65 – 69 | Good |
| C4 | 60 – 64 | Credit |
| C5 | 55 – 59 | Credit |
| C6 | 50 – 54 | Credit |
| D7 | 45 – 49 | Pass |
| E8 | 40 – 44 | Pass |
| F9 | 0 – 39 | Fail |
Stay turned for more answers shortly……….