ST0152 Installation and Maintenance Electrician: practice questions and mock tests
An open-book online knowledge assessment covering the science, regulations and technical judgement behind electrical installation and maintenance work.
Apprentices registered to ST0152 version 1.2 and preparing for the Level 3 online knowledge assessment delivered through the AM2S v1 end-point assessment.
Standard
ST0152
Version
v1.2
Level
3
Exam at a glance
ST0152 · version 1.2
- Questions / papers
- 45 questions
- Time allowed
- 90 minutes
- Pass requirement
- 32/45
- Reference policy
- Open book
What is the ST0152 Installation and Maintenance Electrician test?
The ST0152 online assessment checks knowledge across K1–K19, including safe working, electrical principles, design, installation, inspection, testing, fault diagnosis and regulatory application.
This page focuses on the knowledge-test method. The full end-point assessment may also include practical, observation or professional-discussion methods. Use the official assessment-plan links below to check the complete EPA.
When you take it
It is taken after gateway during end-point assessment, delivered under controlled conditions at a NET licensed assessment centre. The employer or training provider normally coordinates the booking.
- 01
Training
Build the occupational knowledge, practical competence and workplace evidence.
- 02
Gateway
The employer confirms the apprentice is ready to enter end-point assessment.
- 03
Knowledge test
Sit the ST0152 online knowledge assessment.
- 04
Other EPA methods
Complete the practical, observation or discussion methods specified by the assessment plan.
Try a practice question
ST0152 · Original practice material
An electrician is asked to alter unfamiliar battery equipment but has no manufacturer information or relevant training.
What is the best response?
Choose one answer, then check it.
ST0152 exam format and scoring
These are the recorded rules for this standard version. Always compare them with the final joining instructions from your end-point assessment organisation.
Delivery
Delivered under controlled conditions at a NET licensed assessment centre.
Question style
45 multiple-choice questions. Public documents do not specify the number of answer choices or whether live items use images.
Books and materials
The NET assessment centre supplies the current versions at the time of assessment of BS 7671, IET Guidance Note 3, the IET On-Site Guide and the IET Electrician's Guide to the Building Regulations. Only centre-provided publications are permitted; no other documentation may be used.
| Paper | Coverage | Questions | Time | Grade boundary |
|---|---|---|---|---|
| Online knowledge assessment | K1–K19 | 45 | 90 minutes | Pass 32/45 |
What to revise for ST0152
The current published Trade Exams library for this standard contains 400 original practice questions and 68 focused fact sheets. These are revision-library counts, not official exam weightings.
Knowledge-area map
Standard reference
ST0152
Circuit and compliance
- T01Safety and environmental practice
- T02Electrical science
- T03Design and selection
- T04Wiring systems
- T05Inspection, testing and commissioning
- T06Fault diagnosis and maintenance
- T07Regulations and guidance
Safety and environmental practice
01Electrical hazards, isolation, safe systems of work and environmental duties.
Electrical science
02Circuit theory, quantities, relationships, supplies and calculations.
Design and selection
03Loads, cables, protective devices, earthing and installation choices.
Wiring systems
04Containment, equipment, terminations and installation methods.
Inspection, testing and commissioning
05Test sequence, instruments, results, certification and handover.
Fault diagnosis and maintenance
06Symptoms, safe testing, interpretation and corrective action.
Regulations and guidance
07Navigating the supplied BS 7671 and supporting IET publications.
How to prepare for the ST0152 test
A practical four-stage revision sequence: understand the rules first, close topic gaps, practise decisions, then rehearse under the real time pressure.
- 1
Practise locating information quickly in clean copies of the same current books supplied for assessment.
- 2
Revise principles as well as regulation navigation; open book does not remove the need to understand the circuit.
- 3
Use safe inspection and test sequences consistently in scenario questions.
- 4
Complete 45-question sessions inside 90 minutes while budgeting time for book look-ups.
Revision access
Questions, mocks and fact sheets
One exam, one clear price. Access ends automatically and never renews into a subscription.
£10
30 days of access
Everything for this exam for 30 days.
One-off payment. No automatic renewal.
£20
90 days of access
Everything for this exam for 90 days.
One-off payment. No automatic renewal.
ST0152 exam questions answered
Format, timing, version, preparation and booking questions—answered from the recorded standard and assessment-plan sources.
01What is the ST0152 Installation and Maintenance Electrician exam?
The ST0152 online assessment checks knowledge across K1–K19, including safe working, electrical principles, design, installation, inspection, testing, fault diagnosis and regulatory application. This page focuses on the knowledge-test method; the full end-point assessment may also contain practical or discussion-based methods.
02Who should use this ST0152 revision page?
Apprentices registered to ST0152 version 1.2 and preparing for the Level 3 online knowledge assessment delivered through the AM2S v1 end-point assessment.
03When do apprentices take the ST0152 knowledge test?
It is taken after gateway during end-point assessment, delivered under controlled conditions at a NET licensed assessment centre. The employer or training provider normally coordinates the booking.
04What is the ST0152 exam format?
Online knowledge assessment. Delivered under controlled conditions at a NET licensed assessment centre. 45 multiple-choice questions. Public documents do not specify the number of answer choices or whether live items use images.
05How many questions are there and how long does the test take?
45 questions and 90 minutes. Online knowledge assessment: 45 questions, 90 minutes, pass 32/45.
06What is the ST0152 pass mark?
32/45. Online knowledge assessment: pass 32/45. Use only the current books supplied by the NET assessment centre; bringing personal annotated copies is not the same as an open-book assessment.
07Is the ST0152 test open book?
Open book. The NET assessment centre supplies the current versions at the time of assessment of BS 7671, IET Guidance Note 3, the IET On-Site Guide and the IET Electrician's Guide to the Building Regulations. Only centre-provided publications are permitted; no other documentation may be used.
08What subjects should I revise for ST0152?
The main areas are Safety and environmental practice, Electrical science, Design and selection, Wiring systems, Inspection, testing and commissioning, Fault diagnosis and maintenance and Regulations and guidance. The detailed coverage on this page stays within the knowledge mapped to this assessment method.
09How should I prepare for the ST0152 exam?
Practise locating information quickly in clean copies of the same current books supplied for assessment. Revise principles as well as regulation navigation; open book does not remove the need to understand the circuit. Use safe inspection and test sequences consistently in scenario questions. Complete 45-question sessions inside 90 minutes while budgeting time for book look-ups.
10Which version of ST0152 does this page cover?
This page is for ST0152 v1.2. The revision pack defaults to A4-aligned editions. NET supplies the current permitted editions at the booked assessment, so confirm them with the centre.
11Are the Trade Exams questions official live exam questions?
No. Trade Exams' 400 practice questions and 68 fact sheets are independently authored revision material. They do not reproduce recalled, live, confidential or password-protected EPAO questions. All independently authored material remains subject to the pack's technical and editorial review controls.
12Where do the ST0152 exam details come from?
The format and scope are based on the listed Skills England standard and end-point assessment sources, checked for this content pack on 2026-08-13. Always confirm late changes and booking instructions with the employer, training provider or EPAO.
13How does Trade Exams access work?
Access is a one-off £10 payment for 30 days or £20 for 90 days. It never renews automatically.
Official sources and currency
Check the standard behind this page
The format and scope were checked on 13 August 2026. Assessment arrangements can change, so confirm the final booking details with your employer, training provider or EPAO.
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