What is assessed, how the grades work, and what certification actually qualifies you for.
Electrical work is the trade where bad practice kills people. That is exactly why certification carries more weight here than in most trades, and why serious contractors will not put an uncertified hand on a job.
The practical component puts you in front of real installation work. Broadly it covers:
The written or oral component covers the theory: circuit calculation, cable sizing, protection device selection, and the regulations behind the practice.
Grade III covers domestic wiring done correctly and safely under supervision. Grade II moves into three phase and industrial work with less supervision. Grade I is for electricians who can design a circuit, diagnose a fault from first principles and take responsibility for a job.
If you install solar and inverter systems, note that this is usually examined under electrical installation in the Ministry trade categories rather than as a separate trade. Ask the centre which category your certificate will name before you enrol.
Contract work is the immediate one. Estates, commercial buildings and government contracts increasingly require certified electricians, and the certificate is what gets you named on the job.
It is also the base qualification underneath solar, inverter and CCTV work. An electrician with a graded certificate who then adds solar has a far stronger position than somebody who only ever learned to mount panels.
ServHub Training is accredited by the Federal Ministry of Labour and Employment to conduct trade test examinations and examines on site in Port Harcourt. If you are elsewhere, start here.
💬 Ask Us About ThisPractical installation work including conduit, wiring, distribution boards, earthing, testing with instruments and fault finding, plus a written component on circuit theory, cable sizing and regulations.
Solar and inverter work is usually examined under electrical installation in the Ministry trade categories. Confirm with your centre which category your certificate will name.
Increasingly yes. Many estate, commercial and government contracts require certified artisans, and an uncertified electrician cannot be named on the bid.
ServHub Training is accredited by the Federal Ministry of Labour and Employment to conduct trade test examinations, and we examine on site at our Port Harcourt centre. We run 24 courses across construction, electrical, mechanical, craft and digital trades.
ServHub Training is operated by ServHub Technologies Limited, RC 9494742. Search it at search.cac.gov.ng. Walk into the centre at 127 Igwuruta Road, Atali, Port Harcourt any weekday and see the workshop before you pay anybody anything.
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Published 20 September 2026. Last reviewed 20 September 2026. Government processes change. If something here is out of date, tell us and we will correct it.