Hong Kong SAR China Electrician Licensing Exam and Practice Test
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Contents
This page collects the official facts about electrician licensing exams in Hong Kong SAR China: exam name, authority, levels, official website, whether the question bank is public, the wiring code and the conductor size unit. Any field that has not been verified is marked "Not yet confirmed" instead of guessed.
Exam overview
Examination for Registration as a Grade B Electrical Worker
| Item | Details |
|---|---|
| Official name | B級電業工程人員註冊考試 |
| Authority | Electrical and Mechanical Services Department (EMSD) |
| Levels | Grade B (low-voltage fixed installations up to 2500 A) |
| Format | 100 multiple-choice questions in 2 hours: Part A 28 questions (75% to pass), Part B 72 questions (50% to pass); both parts in one sitting; bilingual paper |
| Official website | www.emsd.gov.hk |
| Public question bank | Sample questions only |
| Question bank or outline | www.emsd.gov.hk |
| Exam languages | English, Traditional Chinese |
Examination for Registration as a Grade C Electrical Worker
| Item | Details |
|---|---|
| Official name | C級電業工程人員註冊考試 |
| Authority | Electrical and Mechanical Services Department (EMSD) |
| Levels | Grade C |
| Format | Part A: 50 multiple-choice questions in 2 hours, 70% to pass. Part B: essay, answer 4 of 6 questions in 2.5 hours, 50% to pass. Both parts must be passed within 3 consecutive sittings; bilingual |
| Official website | www.emsd.gov.hk |
| Public question bank | Sample questions only |
| Question bank or outline | www.emsd.gov.hk |
| Exam languages | English, Traditional Chinese |
Wiring code and conductor unit
| Item | Details |
|---|---|
| Licensing model | Issued nationally |
| Wiring code | Code of Practice for the Electricity (Wiring) Regulations (EMSD) |
| Code family | IEC_60364 |
| Edition | 2025 Edition (published 31 Dec 2025; installations complying with the 2020 edition accepted if completed and connected by 31 Dec 2026) |
| Code website | www.emsd.gov.hk |
| Conductor size unit | mm² |
Start the practice test
Start the Hong Kong SAR China electrician practice test
Every practice question cites the official regulation or official exam outline it is based on. No source, no question. Official or third-party question wording is never copied.
Sources
- https://www.emsd.gov.hk/en/electricity_safety/how_to_apply/registering_as_an_electrical_worker_for_electrical/
- https://www.emsd.gov.hk/en/electricity_safety/publications/guidance_notes_guidelines/notes_on_examination_for_registration_as_a_grade_b/index.html
- https://www.emsd.gov.hk/en/electricity_safety/publications/guidance_notes_guidelines/notes_on_examination_for_registration_as_a_grade_c/index.html
- https://www.emsd.gov.hk/en/electricity_safety/new_edition_cop/new_edition_cop_electricity_wiring_regulations/index.html
- https://www.emsd.gov.hk/m/en/electricity_safety/publications/guidance_notes_guidelines/notes_on_examination_for_registration_as_a_grade_b/appendix_ii/
- https://www.emsd.gov.hk/en/electricity_safety/publications/guidance_notes_guidelines/notes_on_examination_for_registration_as_a_grade_c/appendix_ii/
- Code of Practice for the Electricity (Wiring) Regulations (EMSD)
FAQ
Is the electrician exam question bank public in Hong Kong SAR China?
Current record: Sample questions only.
Does wiring in Hong Kong SAR China use mm² or AWG?
Conductor size unit: mm².
Where do the practice questions come from?
Every question is an original practice question that cites the official regulation or official exam outline. Questions without a source are not published.