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Key Facts: NSW Electrical Licence Exam

100

Practice Questions

OpenExamPrep

6077AC

Capstone Course Code

NSW pathway

3 hours

Written Time (+10 min reading)

Capstone

100 marks

Written Paper Total

Capstone

AS/NZS 3000

Core Wiring Standard

Standards Australia

NSW Fair Trading

Licensing Authority

NSW Government

The NSW Electrical Licence Capstone Assessment (6077AC) is the written and practical assessment on the pathway to a NSW Fair Trading electrical qualified supervisor certificate or endorsed contractor licence. The written paper runs three hours plus ten minutes reading time and is marked out of 100, mixing multiple-choice, short-answer, calculation and drawing tasks. It is grounded in the AS/NZS 3000:2018 Wiring Rules and AS/NZS 3008 cable selection, with NSW-specific content on the Home Building Act 1989, qualified supervisor requirements and the Certificate of Compliance Electrical Work (CCEW). Core topics include voltage drop (5% limit), maximum demand, the MEN earthing system, earth fault loop impedance and disconnection times, defect identification, safe isolation and verification testing. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample NSW Electrical Licence Practice Questions

Try these sample questions to review concepts for the NSW Electrical Licence exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under AS/NZS 3000:2018, what is the maximum permitted voltage drop between the point of supply and any point in a low-voltage electrical installation?
A.2.5% of the nominal supply voltage
B.5% of the nominal supply voltage
C.7% of the nominal supply voltage
D.10% of the nominal supply voltage
Explanation: Clause 3.6.2 of AS/NZS 3000:2018 limits the total voltage drop from the point of supply to any point in the installation to 5% of the nominal voltage (about 11.5 V on a 230 V single-phase circuit). This ensures equipment operates within its rated voltage tolerance.
2In the Australian/New Zealand earthing system specified by AS/NZS 3000, what does the abbreviation MEN stand for?
A.Main Electrical Neutral
B.Multiple Earthed Neutral
C.Metallic Earth Network
D.Master Earthing Node
Explanation: MEN stands for Multiple Earthed Neutral. In this system the neutral conductor is connected to earth at the main switchboard (the MEN connection) and is also earthed at multiple points along the distribution network, providing a low-impedance path for fault current.
3Under the NSW Home Building Act 1989, who may legally carry out electrical wiring work unsupervised?
A.Any person who has completed an electrical apprenticeship
B.A person who holds a qualified supervisor certificate or an endorsed contractor licence for electrical wiring work
C.Any licensed builder
D.Any person working under a registered company's ABN
Explanation: Under the Home Building Act 1989 (NSW), electrical wiring work may only be done unsupervised by the holder of a qualified supervisor certificate or an endorsed contractor licence authorising that work. An unlicensed person may only assist while such a qualified person is present at all times.
4AS/NZS 3000 requires the MEN connection (the link between the neutral bar and the earth bar) to be made at which location in an installation?
A.At every subboard
B.At the main switchboard only
C.At the point of attachment on the pole
D.At each socket-outlet
Explanation: The MEN connection (neutral-to-earth link) must be made at the main switchboard of the installation and at no other point within the installation. Making the link at subboards would create parallel neutral/earth paths and is prohibited.
5Which Australian/New Zealand Standard provides the current-carrying capacity tables and impedance data used to select and size cables for an installation?
A.AS/NZS 3000
B.AS/NZS 3008
C.AS/NZS 3017
D.AS/NZS 5601
Explanation: AS/NZS 3008.1.1 'Electrical installations - Selection of cables' provides current-carrying capacity tables, derating factors and voltage-drop (mV/A/m) data. AS/NZS 3000 calls up AS/NZS 3008 for cable selection but the rating tables themselves live in 3008.
6For a residential final subcircuit supplying socket-outlets rated 20 A or less, what is the requirement for additional protection under AS/NZS 3000:2018?
A.A 100 mA RCD
B.A 30 mA RCD
C.A 300 mA RCD
D.No RCD is required
Explanation: AS/NZS 3000:2018 requires RCDs with a rated residual current not exceeding 30 mA on final subcircuits supplying socket-outlets and lighting in domestic installations. The 30 mA threshold provides additional protection against electric shock from direct contact.
7The 6077AC NSW Electrical Capstone written examination is allotted how much working time plus reading time?
A.1 hour with no reading time
B.2 hours plus 5 minutes reading time
C.3 hours plus 10 minutes reading time
D.4 hours plus 30 minutes reading time
Explanation: The 6077AC Capstone written assessment is allotted three hours of working time plus ten minutes of reading time, and is marked out of 100. It combines multiple-choice, short-answer, calculation and drawing tasks based on AS/NZS 3000 and NSW requirements.
8A single-phase 230 V circuit carries 24 A through a cable with a voltage-drop value of 18 mV/A/m over a route length of 30 m. What is the approximate voltage drop?
A.6.5 V
B.13.0 V
C.0.65 V
D.130 V
Explanation: Voltage drop = mV/A/m x current x length / 1000 = 18 x 24 x 30 / 1000 = 12.96 V, approximately 13 V. As this is about 5.6% of 230 V it would exceed the 5% limit, so a larger cable would be needed.
9Under AS/NZS 3000, which colour is mandated for the earth (protective earthing) conductor insulation in a fixed wiring installation?
A.Black
B.Green or green-and-yellow
C.Blue
D.Brown
Explanation: AS/NZS 3000 requires the protective earthing conductor to be identified by green, or green-and-yellow, insulation. Green/yellow is reserved exclusively for the earthing function and must not be used for any active or neutral conductor.
10What is the primary purpose of equipotential bonding in an electrical installation under AS/NZS 3000?
A.To increase the supply voltage to equipment
B.To minimise voltage differences between exposed and extraneous conductive parts during a fault
C.To reduce the cost of cabling
D.To provide a neutral return path for normal load current
Explanation: Equipotential bonding connects exposed conductive parts and extraneous conductive parts (such as metallic water pipes and structural steel) together so that, during a fault, the voltage difference between them is minimised, reducing the risk of electric shock.

About the NSW Electrical Licence Exam

The NSW Electrical Licence Capstone Assessment (6077AC) is the written and practical assessment that an electrician must complete on the pathway to a NSW Fair Trading electrical qualified supervisor certificate or endorsed contractor licence. The written paper is allotted three hours plus ten minutes reading time, is marked out of 100, and tests AS/NZS 3000 Wiring Rules, AS/NZS 3008 cable selection, voltage drop and maximum demand, MEN earthing, fault-loop impedance, NSW electrical regulation, defect identification and testing.

Exam sponsor: NSW Fair Trading (with the 6077AC Capstone delivered by registered training organisations). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

6077AC Capstone written assessment (3 hours plus 10 minutes reading, marked out of 100) with multiple-choice, short-answer, calculation and drawing tasks, plus a separate practical assessment; this practice bank is 100 selected-response items focused on the written theory.

Time Limit

3 hours plus 10 minutes reading time (written assessment)

Passing Score

Assessed as competent across all sections of the 100-mark paper

Exam / Certification Fees

Capstone assessment fee varies by registered training organisation; NSW Fair Trading application fees are separate

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

22%

AS/NZS 3000 Wiring Rules

Fundamental safety principles, definitions, division of circuits, conductor identification, main switches, clearances, IP ratings and general installation requirements

15%

Cable & Protection Selection (AS/NZS 3008)

Current-carrying capacity, derating, Ib<=In<=Iz coordination, RCDs, circuit-breaker curves, breaking capacity and selectivity

12%

Voltage Drop & Maximum Demand

5% voltage-drop limit, mV/A/m calculations, single- and three-phase power and Appendix C maximum-demand methods

13%

Earthing & the MEN System

MEN connection at the main switchboard, main earthing conductor and electrode, equipotential bonding and protective earthing

9%

Short-Circuit & Earth-Fault-Loop Impedance

Prospective fault current, earth fault loop impedance (Zs), disconnection times and breaking-capacity coordination

16%

NSW Electrical Regulation

NSW Fair Trading licensing, the Home Building Act 1989, qualified supervisor certificates, CCEW, safe isolation and the 6077AC Capstone format

5%

Defect Identification

Recognising hazards such as missing RCDs, unauthorised neutral-earth links and mis-coordinated protection on existing installations

8%

Testing & Verification

Sequence of tests, continuity, insulation resistance, polarity, loop impedance, RCD testing and phase rotation

Preparing for the NSW Electrical Licence Exam

What You Need to Know

  • Passing score: Assessed as competent across all sections of the 100-mark paper
  • Assessment: 6077AC Capstone written assessment (3 hours plus 10 minutes reading, marked out of 100) with multiple-choice, short-answer, calculation and drawing tasks, plus a separate practical assessment; this practice bank is 100 selected-response items focused on the written theory.
  • Time limit: 3 hours plus 10 minutes reading time (written assessment)
  • Exam / certification fees: Capstone assessment fee varies by registered training organisation; NSW Fair Trading application fees are separate Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NSW Electrical Licence: Suggested Study Strategy

1Know the headline AS/NZS 3000 figures cold: 5% maximum voltage drop, 1 megohm minimum insulation resistance at 500 V DC, and 30 mA RCDs on socket-outlet and lighting finals
2Practise the calculation triad until it is automatic: voltage drop = (mV/A/m x I x L)/1000, Ohm's law, and three-phase power P = sqrt3 x VL x IL x pf
3Master the MEN system - the single neutral-earth link is at the main switchboard only; spotting an unauthorised link at a sub-board is a classic defect question
4Memorise the coordination rule Ib<=In<=Iz and the disconnection times (0.4 s for 32 A socket-outlet finals, up to 5 s for distribution circuits)
5Learn the NSW regulatory layer - NSW Fair Trading, the Home Building Act 1989, qualified supervisor certificates and the CCEW - which distinguishes this exam from the QLD and VIC versions
6Complete all 100 practice questions and review every miss with the AI tutor, then redo the calculation questions without notes before sitting the Capstone

Frequently Asked Questions

What is the NSW Electrical Licence Capstone (6077AC) assessment?

It is the written and practical assessment on the pathway to a NSW Fair Trading electrical qualified supervisor certificate or endorsed contractor licence. The written paper is marked out of 100 and tests AS/NZS 3000 Wiring Rules, cable selection, earthing, fault-loop impedance and NSW electrical regulation.

How long is the 6077AC Capstone written exam?

The written assessment is generally allotted three hours of working time plus ten minutes of reading time, and is marked out of 100. It combines multiple-choice, short-answer, calculation and drawing tasks, and there is a separate practical assessment.

Who administers electrical licensing in NSW?

NSW Fair Trading administers electrical contractor licences and qualified supervisor certificates under the Home Building Act 1989. It is a breach of that Act to carry out electrical wiring work without the required licence or certificate, with significant penalties.

What standards does the NSW electrical Capstone cover?

The core technical standard is AS/NZS 3000:2018 (the Wiring Rules), supported by AS/NZS 3008 for cable selection and voltage drop. The exam also covers NSW-specific requirements such as the Certificate of Compliance Electrical Work and qualified supervisor obligations.

Is the NSW electrical Capstone the same as the Queensland or Victorian exam?

The underpinning AS/NZS 3000 theory overlaps, but each state has its own regulator and process. NSW uses the 6077AC Capstone under NSW Fair Trading, Queensland uses its own Capstone under the Electrical Safety Office, and Victoria uses the Licensed Electrician Theory assessment under Energy Safe Victoria.

Is this free NSW electrical licence practice as good as paid prep?

Our 100 practice questions cover the same AS/NZS 3000, cable, earthing, fault-loop and NSW-regulation content as the Capstone written theory, with a teaching explanation for every answer plus free daily AI tutor interactions. All content is free forever and updated for 2026.