NSW Electrical Licence study guide
NSW Electrical Licence · Work through your exam, one topic at a time.
The NSW electrical licence is the authorisation a person needs to carry out electrical wiring work in New South Wales, and SafeWork NSW is the state regulator that administers electrical licences and licence examinations. This independent study page is for candidates preparing for the licensing examination - typically electricians who have completed their trade training and are moving from supervised work to holding their own licence, plus overseas-trained or interstate practitioners who need to demonstrate current knowledge of NSW requirements. The NSW Electrical Licence study guide has 7 sections and about 1,924 words.
01Electrical Principles and Theory
A candidate must be fluent with Ohm's law, the power relationships (P = VI, P = I²R, P = V²/R), series and parallel networks, and Kirchhoff's voltage and current laws. Understand AC fundamentals: RMS versus peak versus average values, frequency, phase angle, power factor, and the difference between real power (watts), reactive power (VAR) and apparent power (VA).
313 words, about 2 min02Wiring Systems and Installation Practices
Understand the common wiring methods used in Australian installations: thermoplastic-sheathed (TPS) cable, tough rubber-sheathed cable, and conduit and trunking systems. Know how cables are selected for current-carrying capacity, derated for grouping, ambient temperature, and thermal insulation.
293 words, about 1 min03Electrical Protection and Earthing
Understand the purpose and operation of circuit breakers, fuses, residual current devices (RCDs) and surge protective devices. Know the difference between overcurrent protection (overload and short circuit) and earth fault protection.
289 words, about 1 min04Electrical Equipment and Appliances
Know how to select and connect equipment and appliances safely, including socket outlets, lighting, fixed appliances, and motor circuits. Understand equipment ratings, IP ratings, and suitability for the environment.
256 words, about 1 min05Testing, Verification and Fault Finding
Understand the sequence of tests required for verification of an installation: visual inspection, continuity of protective earthing, insulation resistance, polarity, circuit separation, and earth fault loop impedance. Know the correct instruments and their safe use, including insulation resistance testers, earth loop impedance testers, RCD testers and multimeters.
265 words, about 1 min06Work Health and Safety Obligations
Understand the duties of a person conducting a business or undertaking (PCBU), officers, and workers under work health and safety law. Know the hierarchy of risk control: eliminate, substitute, isolate, engineer, administer, and use personal protective equipment.
261 words, about 1 min07Regulatory Framework and Licensing Requirements
Understand the regulatory framework governing electrical work in NSW, including the role of the relevant regulator, the licensing scheme for electricians, and the requirements for supervision of apprentices and unlicensed workers. Know the obligations for certificates of compliance, notification of electrical work, and record keeping.
247 words, about 1 min