NITA Auto Electrician Trade Test case studies
NITA Auto Electrician Trade Test · Put your knowledge to work in context.
The NITA Auto Electrician Trade Test is a Kenyan trade certification assessment for people who diagnose, service and repair the electrical and electronic systems of motor vehicles. Candidates are typically apprentices, technical-college leavers, garage hands seeking formal recognition, or experienced auto electricians who need a certificate to support employment, licensing or further training. The NITA Auto Electrician Trade Test case studies are 5 cases and about 4,243 words.
1Compressor and light bar on a long tub run: sizing the cable before blaming the relay
A 12 V ute has a 240 W compressor (nameplate 22 A) and a 60 W LED bar added in the tub. The installer ran one 4 mm² positive cable 6.2 m from the battery to a 30 A relay at the rear, used the chassis rail as the return, and fitted a 25 A blade fuse at the battery end.
725 words, about 4 min2Hot no-start on a turbo-diesel: separating a high-resistance cable from a dragging starter
A 2.8 L turbo-diesel ute with 210 000 km is hard to start when hot; cold starts are normal. The battery is a 12 V 95 Ah 800 CCA AGM, 14 months old, resting at 12.68 V, and it holds 10.2 V at 400 A for 15 s on a carbon pile.
751 words, about 4 min3LED indicator conversion on ute and trailer: fast flash plus a phantom glow
A customer replaced all six 21 W incandescent indicator bulbs on a 2012 ute and its box trailer with LED units measuring 0.18 A each at 12.6 V. The flasher is a standard electronic type rated 2 × 21 W plus 5 W.
892 words, about 4 min4P0171 with rising long-term trims: vacuum leak, MAF or fuel delivery
A 1.6 L petrol hatchback with 98 000 km sets P0171 (System Too Lean Bank 1) after about 40 km of driving. Freeze frame at fault: 2 480 rpm, 62 km/h, calculated load 38 %, STFT +18 %, LTFT +21 %, coolant 89 °C, MAP 31 kPa.
908 words, about 5 min5Quote and layout for a light bar, fridge socket and auxiliary battery
A workshop is preparing a 2019 dual-cab for touring. The customer wants a 240 W LED bar on the roof and a 15 A fridge socket in the tub, and supplies this layout: main battery positive → 40 A fuse → 8 mm² cable, 5.5 m one way with the chassis as the return → 100 Ah AGM auxiliary battery in the tub.
967 words, about 5 min