SG PPE Electrical case studies
SG PPE Electrical · Put your knowledge to work in context.
The SG PPE Electrical (Practical Proficiency Examination – Electrical) is a Singapore assessment designed to verify that an electrician can apply electrical theory safely and competently in real-world installations. It is typically taken by licensed electricians, technicians and engineering personnel who need to demonstrate practical proficiency across wiring systems, protection and earthing, inspection and testing, and fault diagnosis. The SG PPE Electrical case studies are 5 cases and about 3,456 words.
1Ring Final Circuit Continuity Anomaly
You are testing a domestic ring final circuit in a 1970s house that has just had a kitchen refurbishment. The circuit is protected by a 32 A BS 1362 cartridge fuse, and the wiring is 2.5 mm² PVC twin-and-earth.
642 words, about 3 min2TT System Earth Fault Loop Impedance
You are commissioning a small rural workshop supplied by a TT system. The installation has a 100 mA 300 mA time-delayed RCD as the main protective device, a 30 mA RCD for socket outlets, and a consumer unit with MCBs.
744 words, about 4 min3Cable Sizing for a Buried Supply
You are asked to install a 230 V single-phase supply to a detached garage 35 m from the house. The load is a 3 kW heater, a 1.5 kW compressor, and lighting totalling 200 W.
849 words, about 4 min4Insulation Resistance Failure on a Lighting Circuit
You are carrying out an initial verification on a newly rewired two-bedroom flat. The lighting circuit is protected by a 6 A Type B MCB, wired in 1.5 mm² PVC twin-and-earth, with 1.0 mm² CPC.
577 words, about 3 min5Fault Diagnosis on a Nuisance-Tripping RCD
A client reports that the 30 mA RCD protecting the socket circuits in a house trips randomly, sometimes when nothing is switched on, and more often when it rains. The installation is a TN-C-S system with a split-load consumer unit.
644 words, about 3 min