SG PPE Electrical study guide
SG PPE Electrical · Work through your exam, one topic at a time.
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 study guide has 7 sections and about 1,692 words.
01Electrical Theory and Circuit Fundamentals
Candidates must be fluent with Ohm's law (V = IR), power relationships (P = VI = I²R = V²/R), and the behaviour of series and parallel networks. Know that in a series circuit current is common and voltages sum, while in parallel the voltage is common and branch currents sum.
288 words, about 1 min02Wiring Systems, Cables and Accessories
Understand cable construction (conductors, insulation, sheath, armour), common cable types and their applications, and how installation method affects current-carrying capacity. Know the concept of derating: grouping, ambient temperature, thermal insulation and protective device type all reduce the tabulated current rating (I t).
258 words, about 1 min03Protection, Earthing and Bonding
Know the purpose of protective devices: overload protection, short-circuit protection, and additional protection by RCD. Understand disconnection times for TN and TT systems, the role of the main earthing terminal, circuit protective conductors, and main and supplementary bonding.
270 words, about 1 min04Electrical Installations and Equipment
Understand selection and erection principles: equipment must be suitable for the environment, voltage, current and duty. Know the importance of IP ratings, enclosure selection, ventilation, and segregation of Band I and Band II circuits.
223 words, about 1 min05Inspection, Testing and Commissioning
Know the sequence of initial verification: visual inspection before testing, then continuity of protective conductors, ring final circuit continuity, insulation resistance, polarity, earth electrode resistance (where applicable), earth fault loop impedance, RCD operation, and functional testing. Understand instrument use, test voltages, acceptable results and the importance of safe isolation before testing.
227 words, about 1 min06Electrical Safety, Regulations and Codes of Practice
Understand the regulatory framework: statutory duties, the role of standards and codes of practice, and the principle of working to the current edition. Know the concepts of competence, risk assessment, safe isolation, permits and lock-off, and the requirement to maintain installations in a safe condition.
209 words, about 1 min07Practical Assessment and Fault Diagnosis
Know a systematic approach to fault finding: gather information, confirm the symptom, form a hypothesis, test logically, and verify the repair. Understand common faults: open circuits, short circuits, earth faults, high resistance joints, and intermittent faults.
217 words, about 1 min