PracticeVideosBlogFlashcardsEspañol
All Practice Exams

Free Practice Questions for VIC Plumbing Licence Exam

Exam-style questions and explanations by OpenExamPrep.

✓ No registration✓ No credit card
100+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More Australian Trade Licences & Certificate III

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Queensland Electrical Licence Capstone Assessment

Practice QuestionsStudy Guide

ARCtick Restricted Refrigerant Handling Licence — Automotive Air Conditioning

Practice Questions

Australian White Card — General Construction Induction (CPCCWHS1001)

Practice Questions

Authorised/Approved Vehicle Examiner (AIS) Core Module Exam

Practice Questions

Certificate III in Agricultural Mechanical Technology (AUR30420)

Practice Questions

Certificate III in Air-Conditioning and Refrigeration (UEE32220)

Practice Questions
Exam Review

Key Facts: VIC Plumbing Licence Exam Exam

100

Practice Questions

OpenExamPrep

7

Main Plumbing Classes

VBA/BPC

$750

Compliance Certificate Threshold

Plumbing Regulations 2018

5 days

Certificate Issue Timeframe

Plumbing Regulations 2018

AS/NZS 3500

Core Plumbing Standard

Standards Australia

Open-reference

Exam Format

VBA/BPC

The Victoria Plumbing Industry Licence Exam is administered by the Victorian Building Authority (now the Building and Plumbing Commission) and is the theory assessment a registered plumber must pass to become licensed in a class such as water supply, sanitary, drainage, roofing/stormwater, mechanical services, irrigation or gasfitting. Exams are open-reference: candidates locate and interpret AS/NZS 3500, the Plumbing Code of Australia and the Plumbing Regulations 2018, perform calculations and mark up drawings, so the question count, time and pass mark vary by class. Only a licensed plumber may issue a compliance certificate (required for plumbing work valued at $750 or more, and for all gasfitting), and it must be issued within five days. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample VIC Plumbing Licence Exam Practice Questions

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

1In Victoria, which body administers the plumbing registration, licensing and the plumbing industry licence (theory) examinations?
A.WorkSafe Victoria
B.The Victorian Building Authority (now the Building and Plumbing Commission)
C.Energy Safe Victoria
D.The Australian Building Codes Board
Explanation: Plumbing registration, licensing and the associated theory and practical exams in Victoria are administered by the Victorian Building Authority (VBA), which transitioned to the Building and Plumbing Commission (BPC) in 2025. Energy Safe Victoria regulates gas safety but does not run plumbing licensing.
2Which document sets the minimum value of plumbing work above which a compliance certificate must be issued in Victoria?
A.AS/NZS 3500.1
B.The Plumbing Regulations 2018
C.The National Construction Code Volume One
D.The Building Act 1993
Explanation: The Plumbing Regulations 2018 (made under the Building Act 1993) set the requirement that a compliance certificate must be issued for plumbing work valued at $750 or more. AS/NZS 3500 is a technical standard, not the source of the certificate threshold.
3What is the minimum value of plumbing work for which a compliance certificate must be issued in Victoria?
A.$500
B.$750
C.$1,000
D.$2,500
Explanation: Under the Plumbing Regulations 2018, a compliance certificate must be issued for any plumbing work with a value of $750 or more (and for all gasfitting work regardless of value). This certifies the work complies with the relevant regulations, codes and standards.
4Who is authorised to issue a plumbing compliance certificate in Victoria?
A.A registered plumber in the relevant class
B.A licensed plumber in the relevant class
C.An apprentice plumber under supervision
D.A building surveyor
Explanation: Only a licensed plumber in the relevant class may issue a compliance certificate. A registered plumber must work under the supervision of a licensed plumber and cannot issue certificates themselves. This is a key practical difference between registration and licensing in Victoria.
5Within how many days of completing plumbing work that requires a compliance certificate must the licensed plumber issue it in Victoria?
A.Within 5 days
B.Within 14 days
C.Within 30 days
D.Within 90 days
Explanation: Under the Plumbing Regulations 2018, the licensed plumber responsible for the work must issue the compliance certificate within five days of completing the work. The certificate is then lodged with the VBA/BPC and a copy provided to the consumer.
6Which AS/NZS 3500 part covers water services (cold and hot water supply pipework and backflow protection)?
A.AS/NZS 3500.1
B.AS/NZS 3500.2
C.AS/NZS 3500.3
D.AS/NZS 3500.4
Explanation: AS/NZS 3500.1 'Plumbing and drainage Part 1: Water services' covers cold water supply, pipe sizing, materials and backflow prevention. Part 2 covers sanitary plumbing/drainage, Part 3 stormwater, and Part 4 heated water services.
7Which AS/NZS 3500 part deals with sanitary plumbing and drainage?
A.AS/NZS 3500.1
B.AS/NZS 3500.2
C.AS/NZS 3500.3
D.AS/NZS 3500.5
Explanation: AS/NZS 3500.2 'Sanitary plumbing and drainage' sets requirements for the design and installation of sanitary plumbing and drainage from fixtures to the sewer, including stacks, vents, traps and drains. Part 5 is the simplified domestic (single dwelling) installations standard.
8The minimum trap seal depth required to protect against the loss of seal in a fixture trap under AS/NZS 3500.2 is:
A.25 mm
B.40 mm
C.50 mm
D.75 mm
Explanation: A water seal trap must retain a minimum seal depth of 50 mm. The water seal prevents foul air and gases from the drainage system entering the building. Inadequate venting can siphon or blow out the seal, allowing sewer gas into the space.
9Under AS/NZS 3500.2, what is the minimum grade (fall) for a DN 100 sanitary drain?
A.1 in 40
B.1 in 60
C.1 in 80
D.1 in 100
Explanation: AS/NZS 3500.2 specifies a minimum grade of 1 in 60 for DN 100 drains and 1 in 100 (often cited as 1 in 90–100) for DN 150 drains. Adequate fall ensures self-cleansing velocity so solids are carried along without blockage or solids stranding.
10What is the primary purpose of a vent (ventilation pipe) in a sanitary drainage system?
A.To increase water pressure to fixtures
B.To balance air pressure and protect trap water seals
C.To act as an overflow for fixtures
D.To filter foul gases before release
Explanation: Vents balance air pressure within the drainage system so that positive or negative pressure surges do not blow out or siphon the water seal in fixture traps. By admitting air, vents keep trap seals intact and prevent sewer gases entering the building.

About the VIC Plumbing Licence Exam Exam

The Victoria Plumbing Industry Licence Exam is the VBA/BPC theory (and where required practical) assessment that a registered plumber must pass to become licensed in a plumbing class. Exams are open-reference: candidates locate and interpret AS/NZS 3500, the Plumbing Code of Australia and the Plumbing Regulations 2018, perform calculations and read drawings.

Exam sponsor: Victorian Building Authority (now the Building and Plumbing Commission, BPC). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Class-specific theory exam (and practical where required) administered by the VBA/BPC, with multiple-choice, short-answer and drawing/plan tasks requiring candidates to locate and interpret reference materials such as AS/NZS 3500; this practice bank is 100 selected-response items

Time Limit

Set per class assessment (typically several hours)

Passing Score

Competency-based pass set by the VBA/BPC for each class (confirm with the regulator)

Exam / Certification Fees

Per-exam fee set by the VBA/BPC (varies by class; confirm the current fee)

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.

15%

Plumbing Code & Victorian Regulations

Plumbing Code of Australia, Plumbing Regulations 2018, the seven plumbing classes, licensed vs registered roles, OHS, plan reading and the open-reference exam format

17%

Water Supply

AS/NZS 3500.1 pipe sizing and loading units, 500 kPa pressure cap and limiting valves, materials, heated water, tempering/Legionella control and minimum cover

11%

Sanitary Plumbing

AS/NZS 3500.2 traps and the 50 mm seal, stacks and venting, self-siphonage, floor waste gullies and fixture-unit loading

14%

Drainage

Below-ground drains, grades (1 in 60 DN100), inspection openings, reflux valves, overflow relief gullies, boundary traps, trade waste and on-site wastewater

9%

Roofing & Stormwater

AS/NZS 3500.3 gutter/downpipe sizing, rainfall intensity, box-gutter overflow, charged lines, legal point of discharge and rainwater harvesting

10%

Backflow Prevention

Cross-connections, hazard ratings, device selection (dual check, double check, RPZD, air gap), back-siphonage vs back-pressure and annual testing

5%

Mechanical Services

HVAC and hydronic pipework, expansion vessels, condensate disposal, fire-stopping and restricted mechanical services classes

9%

Gasfitting (Type A) Basics

AS/NZS 5601.1 Type A installation, ventilation and combustion air, flues and carbon monoxide, pressure testing and Type A vs Type B

10%

Compliance Certificates

The $750 threshold and all-gasfitting rule, licensed-only issuance, five-day timeframe, lodgement, consumer protection and risk-based audits

Preparing for the VIC Plumbing Licence Exam Exam

What You Need to Know

  • Passing score: Competency-based pass set by the VBA/BPC for each class (confirm with the regulator)
  • Assessment: Class-specific theory exam (and practical where required) administered by the VBA/BPC, with multiple-choice, short-answer and drawing/plan tasks requiring candidates to locate and interpret reference materials such as AS/NZS 3500; this practice bank is 100 selected-response items
  • Time limit: Set per class assessment (typically several hours)
  • Exam / certification fees: Per-exam fee set by the VBA/BPC (varies by class; confirm the current fee) 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

VIC Plumbing Licence Exam: Suggested Study Strategy

1Practise FINDING answers quickly in tabbed copies of AS/NZS 3500 and the Plumbing Regulations 2018 rather than memorising every clause
2Memorise key values: 50 mm trap seal, 1 in 60 grade for DN100 drains, 500 kPa maximum outlet pressure, 60 C storage / 50 C delivery / 43.5 C high-risk facilities
3Know the backflow hierarchy: low hazard = dual check, medium = testable double check, high = RPZD or air gap, tested annually
4Drill the compliance-certificate rules: $750 plumbing threshold, all gasfitting regardless of value, licensed-plumber-only, issued within five days
5Be ready to read and mark up hydraulic drawings and perform sizing/grade calculations under exam conditions
6Complete all 100 practice questions and review every miss with the AI tutor before you sit the exam

Frequently Asked Questions

Who administers the Victoria plumbing licence exam?

The exam is administered by the Victorian Building Authority (VBA), which transitioned to the Building and Plumbing Commission (BPC). It is the theory (and where required practical) assessment a registered plumber must pass to become licensed in a plumbing class.

How many questions are on the VBA plumbing exam and what is the pass mark?

The VBA/BPC plumbing assessments are class-specific and use a mixture of multiple-choice, short-answer and drawing mark-up tasks, so the question count, time and pass mark vary by class and are not published as a single fixed number. Confirm details for your class with the VBA/BPC.

Is the VBA plumbing exam open book?

Yes, in effect. Candidates may bring and must interpret the permitted reference materials such as AS/NZS 3500, the Plumbing Code of Australia and the Plumbing Regulations 2018, perform calculations and read drawings. The skill tested is correctly applying the standards, not memorising clauses.

What is the difference between a registered and a licensed plumber in Victoria?

A licensed plumber can carry out, supervise and certify work (issue compliance certificates) independently. A registered plumber must work under a licensed plumber's supervision and cannot issue certificates. Licensing requires registration plus additional experience, the prescribed units and the licence exam.

When must a plumbing compliance certificate be issued in Victoria?

A compliance certificate is required for plumbing work valued at $750 or more and for all gasfitting work regardless of value. Only a licensed plumber in the relevant class may issue it, and it must be issued within five days of completing the work.

Is this free VBA plumbing practice test up to date for 2026?

Yes. Our 100 practice questions cover the current AS/NZS 3500 series (2025 editions mandatory from 20 October 2025), the Plumbing Regulations 2018 and the plumbing classes, with a teaching explanation for every answer plus a free AI tutor. All content is free and updated for 2026.