HK Grade B Electrical Worker Exam exam-day guide
HK Grade B Electrical Worker Exam · Prepare for the day ahead.
Your checklist
Confirmation letter / admission document
Print or download the confirmation issued by the examination provider showing your name, candidate number, date, time and venue. Requirements vary between providers, so confirm with the provider whether a printed copy is mandatory or an electronic copy is accepted.
Original identity document
Bring the original HKID card or the travel document you used at registration. Photocopies and expired documents are normally refused; if your name differs from the registration record, bring supporting documentation and confirm the accepted evidence with the provider in advance.
Writing instruments
Bring at least two black or blue ballpoint pens and a pencil with an eraser. Multiple-choice answer sheets are usually marked with pencil while written answers are completed in ink, but confirm the permitted stationery with the provider.
Non-programmable calculator
A basic non-programmable calculator helps with load, current, voltage-drop and cable-sizing arithmetic. Confirm with the provider whether calculators are permitted and whether any model restrictions apply before relying on one.
No smart devices at your desk
Switch off and stow mobile phones, smart watches and any other electronic devices as instructed. Unauthorised devices at the desk can lead to disqualification regardless of whether they were used.
Venue reconnaissance
Check the exact address, the nearest MTR exit or bus stop, and the expected journey time at the hour you will travel. Arrive early enough to allow for lifts, registration queues and finding the assigned room.
Rest and realistic preparation the day before
Do not attempt to learn new topics in the last evening. Review your own summary sheets of frequently confused values such as conductor current-carrying capacities, diversity factors and protective-device ratings, then sleep.
Plan for documents you cannot replace on the day
Keep your identity document and confirmation letter together in one folder the night before. Replacing a lost document on exam morning is usually impossible; if yours is missing, contact the provider immediately to ask about contingencies.
Water and a light snack for afterwards
Sessions can be long and venues may not have nearby shops. Keep these outside the examination room and consume them only during authorised breaks.
Read the current candidate handbook
Download the latest version from the provider's website and read the sections on permitted items, late arrival, absence and misconduct. Rules are revised from time to time, so confirm with the provider rather than relying on an older copy.
Plan the day
Switch from learning new material to consolidating. Work through one full set of practice questions under timed conditions, then spend the remaining time on the topics you got wrong. For the Grade B written paper this typically means cable sizing and voltage drop, protective device selection and discrimination, earthing and bonding, and the requirements for fixed installations. Write a one-page sheet of formulas and statutory references you keep confusing and reread only that sheet on the last day.
Reconfirm the logistics: venue address, start time, registration cut-off, and the provider's rules on late arrival and permitted equipment. If anything on your confirmation letter is wrong, such as a misspelled name or an incorrect identity number, contact the provider now rather than on exam day.
Prepare the physical kit: identity document, confirmation letter, pens, pencil, eraser and calculator in one bag. Check the calculator's batteries or replace them. Set two alarms and plan to reach the venue with a comfortable margin, because traffic and queueing at registration are the most common causes of avoidable stress.
Do a short, light review of your summary sheet in the early evening, then stop. Eat a normal meal, avoid heavy caffeine after midday, and go to bed at your usual time. Cramming overnight tends to cost more in careless errors than it gains in recall.
Eat a proper breakfast, dress in layers because examination halls are often cold, and leave earlier than your travel plan suggests. On arrival, go to registration promptly, keep your identity document in hand, and locate the room and the toilets before the session begins.
Read the instructions on the paper and answer sheet before starting, and check whether there is negative marking for wrong multiple-choice answers; if there is none, never leave a blank. Do a first pass answering the questions you know, mark the difficult ones, and return to them. For calculation questions, write down the given values, the formula and the units before computing, and sanity-check the result against typical values, for example whether a calculated current or cable size is plausible for the stated load.
Watch the clock at the halfway point and again with about fifteen minutes remaining, and reserve the final minutes to transfer or check answers and ensure your candidate number is entered correctly. If you need to leave the room, raise your hand and follow the invigilator's instructions.
Rules to check
Bring and display the original identity document and admission document required by the provider. If you arrive without them, you may be refused entry, so confirm the accepted alternatives with the provider beforehand.
Arrive before the registration cut-off. Candidates arriving after the permitted time may be admitted only at the invigilator's discretion or not at all, and no extra time is normally granted; confirm the exact late-arrival policy with the provider.
Keep only permitted items at your desk. Phones, smart watches, notes and unauthorised electronic devices must be switched off and stored as instructed; possession at the desk can be treated as misconduct.
Do not communicate with other candidates once the session has started, and do not look at another candidate's paper. Raise your hand for an invigilator if you need assistance, more paper or permission to leave.
Breaks are usually not permitted during the session except in an emergency and under supervision; confirm the provider's policy on toilet breaks and on leaving early, since rules differ between centres.
Scoring and pass criteria are set by the provider and may combine written and practical assessments. Check the current pass mark and any negative-marking rule in the official handbook rather than assuming them.
Follow all instructions from invigilators immediately. Suspected cheating, impersonation or disruptive behaviour can lead to removal from the room and invalidation of your result, with the provider's appeal process being the proper route for any dispute.
If illness or an emergency prevents you from sitting or finishing the paper, notify the invigilator on the day and contact the provider afterwards to ask about documented medical evidence and any special-consideration arrangement; confirm the deadlines with the provider.