NABTEB Electrical Installation and Maintenance Works Practical Questions

Filed in Education by on December 10, 2021

– NABTEB Electrical Installation and Maintenance Works Practical Questions –

NABTEB NABTEB Electrical Installation and Maintenance Works Practical Questions will guide you before taking part in the NABTEB exams. Electrical and Maintenance Works Practical NABTEB Expo Questions are out now on our website.


The National Business and Technical Examinations Board was founded in 1992 to domesticate craft level examinations.

Also, it was previously conducted by City & Guilds, Pittman’s, and the Royal Society of Arts throughout the United Kingdom in conformity with the principles of the National Policy on Education.

Its formation was the culmination of a 15-year evolutionary process in which FOUR Government Panels were established at various periods to assess the place and structure of public examinations in our educational system.


Develop as a Globally Recognized Assessment Body for Craftsmen and Technicians.


NABTEB is a vision-led, mission-driven public institution with the following vision: To be a Globally Recognised Assessment and Certification Body Preparing Candidates for the Workplace and Academic/Professional Excellence.

The management of the National Business and Technical Examinations Board (NABTEB) is yet to release the 2021 November/December NBC/NTC and ANBC/ANTC examinations results.

Candidates who intend to take part in the 2021 NABTEB GCE can learn how to check their results online.

NABTEB Electrical Installation and Maintenance Works Practical Questions & Answers

Question 1

(i) List four sources of danger to an electrician in an electrical workshop. [4 marks]

(ii) State two causes of electric shock. [2 marks]

(iii) State three procedures for rescuing a victim of electric shock. [3 marks]

(iv) Draw a well-labelled diagram to illustrate the wiring of two points of light in parallel, controlled by a one-way switch. [4 marks]

(v) List five tools used for surface wiring in electrical installation work. [5 marks]


The expected answers are:

(i) Sources of Danger in an Electric Workshop

– Ineffectiveness of earth continuity conductor

– Use of cable without mechanical protection / bare conductor

– Use of cable without proper insulation / damaged insulation

– Working on live conductors

– Use of unearthed brass / unskirted lamp holders

– Lack of protective covering on switches/boxes

– cable run over sharp edges

– Water and chemical

– Overloading of circuit

– Use of wrong tools

– Non-insulated tools

– Horseplay

– Lack of safety wear

– Moving machinery

– Poor ventilation/illumination

– Slippery floors

(ii) Causes of Electric Shock

– Wet hands

– Walking bare footed

– Frayed cables / incorrect jointing of cables

– Un-insulated / badly made connections

– Use of cable without mechanical protection

– Unprotected or unearthed socket outlets/plugs

– Poor or broken earth connections

(iii) Procedures for Rescuing an Electric Shock Victim

– Switch off the source of current/supply (before attempting to remove the casualty)

– Remove any obstructions to breathing

– Pull off the person by his clothing / using an insulating material

– Carry out artificial respiration

– Send for a doctor / medical help

(iv) Illustration of a Two Points of Light

(v) Tools for Surface Wiring

– Hammer

– Knife

– Raw plug

– Saw

– Pliers

– Screwdriver

– Neon tester/test lamp

– Gimlet

– Stripper

– Measuring tape

– Plumb line

– Chisel

NABTEB is one of the examination bodies set up by the Federal Government in 1992 to reduce the burden of conducting examinations, which involves a lot of technical and trade-related practicals.

The board conducts the National Technical Examination (NTC), National Business Certificate (NBC) and their respective advance level examinations (ANBC and ANTC).

DISCLAIMER! These are not real NABTEB Electrical Installation and Maintenance Works Practical Questions, but likely repeated questions over the years to help candidates understand the nature of their examinations. Ensure to note every question provided on this page.

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