What is assessed across engine and electrical work, and which category applies.
Nigeria runs on generators and every one of them eventually breaks. The people who fix them mostly learned by trial and error, which is why the same set gets repaired four times in a year.
Generator work is half engine and half electrical, and that is exactly why most technicians are weak at one end of it.
A mechanic who does not understand the alternator changes the engine oil and hands back a set that still will not hold load. An electrician who does not understand the engine replaces the AVR on a set with a fuel problem.
The technician who understands both ends holds servicing contracts. The one who understands one end chases call outs.
Depending on the focus of your work, generator technicians are generally examined under the mechanical or the electrical trade categories rather than a dedicated generator category. Ask your centre which applies to the work you intend to do, because the category on your certificate is what an employer reads.
Estates, schools, hospitals, filling stations, banks and small businesses all run generators and all of them would rather pay a monthly servicing fee than deal with a breakdown. Those contracts go to technicians who can demonstrate competence, which in practice means certification.
It is recurring income rather than one off repairs, and it is the difference between a trade and a business.
ServHub Training is accredited by the Federal Ministry of Labour and Employment and examines on site in Port Harcourt. Elsewhere, start here.
💬 Ask Us About ThisGenerator work sits across the mechanical and electrical trade categories depending on the focus of the work. Ask your centre which category your certificate will name.
Engine operation and overhaul, fuel systems, alternator and excitation, AVR and control panels, starting and charging, load testing, and fault finding across both mechanical and electrical causes.
Servicing contracts with estates, businesses and institutions produce recurring income rather than one off call outs, and those contracts generally go to certified technicians.
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.