Master Electrician (ESA) · Ontario ME
Five Ontario Master Electrician practice test questions, answers included.
Five original practice questions from the three sections of Ontario's Master Electrician licensing exam: connection authorizations and EV charging circuits from the OESC, committee preparation time and crane clearances from worker safety law, and the DME rule from O. Reg. 570/05. Pick an answer, then open the explanation. Every question in the bank explains all four options, not just the right one.
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45 free ME questions in all
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A school addition is permanently wired but unfinished, and the mechanical contractor needs power to commission the air-handling units before the final inspection. Under Rule 2-014, what may ESA issue?
- A deviation under Rule 2-030, allowing early energization
- A permanent connection authorization, conditional on completion
- A time-limited, conditional, renewable connection authorization
- A periodic-inspection acceptance, covering the work to completion
Show the answer
C. Correct. Rule 2-014 lets ESA authorize connection of a temporary installation, or a permanent but unfinished one, for a set period and on conditions it specifies, and renew it. Issuing it does not commit ESA to a permanent authorization if the finished work does not comply.
Source: ESA exam outline, Section 1: Ontario Electrical Safety Code; OESC Rule 2-014
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A condominium board wants a 7.2 kW EVSE in the parkade connected to an existing branch circuit that also feeds storage-locker lighting. No load-control equipment is planned. Under Rule 86-300, may the EVSE share that circuit?
- Yes, if the circuit's calculated load stays below 80 % of its rating
- No; without an EV energy management system it needs its own circuit
- Yes, if the lighting is moved to the load side of the EVSE
- No; EVSE may share a circuit only with other EV supply equipment
Show the answer
B. Correct. Rule 86-300 1) requires EVSE to have a separate branch circuit supplying no other loads except ventilation equipment for the EVSE. Rule 86-300 2) allows other loads on the circuit only where an electric vehicle energy management system is installed under Rule 8-106 10) or 11).
Source: ESA exam outline, Section 1: Ontario Electrical Safety Code; OESC Rule 86-300
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An LEC's joint committee meets every three months. Under OHSA s. 9, what preparation time is a committee member entitled to for each meeting?
- One hour, or longer if the committee decides, paid as work time
- One hour, or longer if the LEC agrees, paid as work time
- One hour, unpaid unless a collective agreement provides for pay
- Two hours for each meeting, paid at the member's regular rate
Show the answer
A. Correct. Section 9(34)(a) gives each member one hour, or any longer period the committee determines is necessary, to prepare for each meeting, and s. 9(35) deems that time to be work time paid at the member's regular or premium rate.
Source: ESA exam outline, Section 2: Worker Safety; Occupational Health and Safety Act
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A mobile crane on a project will work between a 27.6 kV distribution line and a 230 kV transmission line (nominal phase-to-phase ratings). Under O. Reg. 213/91 s. 188(2), what minimum distances must the crane and its load keep?
- At least 3 m from the 27.6 kV line and 4.5 m from the 230 kV line
- At least 3 m from each line
- At least 4.5 m from the 27.6 kV line and 6 m from the 230 kV line
- At least 3 m from the 27.6 kV line and 6 m from the 230 kV line
Show the answer
A. Correct. The s. 188(2) table sets 3 m for lines of 750 V up to 150 000 V, 4.5 m for lines over 150 000 V up to 250 000 V and 6 m above 250 000 V. The 27.6 kV line falls in the first band and the 230 kV line in the second.
Source: ESA exam outline, Section 2: Worker Safety; O. Reg. 213/91
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A master electrician is the full-time DME of one LEC. A second LEC offers to put him on its payroll for weekend jobs and designate him as its DME as well. Under O. Reg. 570/05 s. 7, what is the position?
- He may not accept, as a DME may not hold a second job with any other employer
- He may accept, as he would be actively employed by both of the LECs
- He may not accept, as he cannot be the DME of two LECs at the same time
- He may accept if each designation covers a different scope of work
Show the answer
C. Correct. O. Reg. 570/05 s. 7 (2) bars an ME from accepting a second designation that would have him acting as DME for more than one LEC at the same time, and s. 4 (3) bars the second LEC from making it. He may work weekends there, but not as its DME.
Source: ESA exam outline, Section 3: Business Administration; O. Reg. 570/05
Want ten more with every option explained? Free Master Electrician exam practice questions: no account, no email, printable. With ten more on each section page below, that makes 45 free ME questions in all.
The ESA Master Electrician exam at a glance
How many questions are on the Master Electrician exam?
80 multiple-choice questions in three hours, in three sections of 33 percent each: the Ontario Electrical Safety Code, Worker Safety and Business Administration. To pass you need 70% overall and at least 60% in each section. Source: ESA's Master Electrician Exam Information Package (Form 1293, 2026).
The Master Electrician (ME) exam is Ontario's licensing exam for master electricians, run by ESA, the Electrical Safety Authority, under O. Reg. 570/05. It is not a Red Seal exam. ESA's Information Package describes it as 80 multiple-choice questions in three hours, written in person at locations across Ontario, in three sections of 33 percent each: the Ontario Electrical Safety Code, which tests how well you use the latest OESC as a reference; Worker Safety, which covers the Occupational Health and Safety Act and its construction and industrial regulations, the Workplace Safety and Insurance Act and WHMIS; and Business Administration, which covers the Electricity Act and O. Reg. 570/05, consumer protection, construction, employment, human rights and labour relations law and administrative penalties as they apply to electrical contracting.
The pass rule has two parts. You need 70 percent or more overall and at least 60 percent in each of the three sections. ESA does not publish how many questions each section has; our timed mock exam is 80 questions in 180 minutes, drawn 27, 27 and 26 from the sections, and it scores both parts of the rule. ESA's Annual Report for 2025-26 says 1,184 people wrote the ME exam that year and 66 percent passed.
The exam is open book, hard copy only: the latest OESC, ESA's Master Electrician Exam Relevant Legislation book and its Guideline to the Duties and Responsibilities of LECs and DMEs, with a non-programmable calculator and a pencil. ESA's FAQ says virtual sittings have been paused since March 1, 2024. The fee in the Information Package is $164.00 plus HST ($185.32), charged for each attempt, and results come by email within 15 business days. After every two failed attempts ESA requires a pre-approved training course before you write again.
The full Master Electrician practice exam
Find out where you stand on both pass rules.
550 original practice questions for the Ontario ME exam, 400 Standard and 150 Advanced, spread over ESA's three sections, with the reason for every option and the Rule or section behind it in the explanation. Timed 80-question mock exams in 180 minutes, scored the way ESA scores the exam: 70 percent overall and at least 60 percent in every section, with each section's percentage shown, so one weak section shows up before exam day.
Also writing a Red Seal, G3 or 4th Class Power Engineering exam? All-Access covers the ME exam for $119, with all eighteen Red Seal trades, the Ontario G3 and 4A and 4B included.
What the Master Electrician exam covers
Three sections, a third each.
ESA publishes the three sections and the laws each covers, but not how many questions each section has or which topics carry the most within a section. Our 550-question bank covers all three, and the counts below are what is in our bank, not on the exam. Each section links to ten free questions on it.
- 1
Ontario Electrical Safety Code · 206 in our bank
The 2024 OESC, 29th edition: Ontario's own Section 2 rules on notifications, connection authorizations, plan review and approved equipment, conductor sizing and ampacity, services and load calculations, grounding and bonding, wiring methods and voltage drop, protection, receptacles and motors, and the special sections, from hazardous locations and fire pumps to pools, Ontario's power-line rules and EV charging. Free Section 1 questions: the OESC →
- 2
Worker Safety · 172 in our bank
The Occupational Health and Safety Act and its duty holders, committees and work refusals, O. Reg. 213/91 on construction projects, Reg. 851 on industrial establishments, WHMIS and designated substances, the Workplace Safety and Insurance Act and first aid, and the training and incident-reporting rules. Free Section 2 questions: worker safety →
- 3
Business Administration · 172 in our bank
Licensing under the Electricity Act and O. Reg. 570/05 with ESA's powers and administrative penalties, the Construction Act, the Consumer Protection Act, 2002, the Employment Standards Act, 2000, the Human Rights Code, the Labour Relations Act, 1995, the Building Opportunities in the Skilled Trades Act, 2021, the Criminal Code duty of anyone who directs work, and the business side: pricing, cash flow, HST and business names. Free Section 3 questions: business administration →
Where our questions come from
Every question original, every one cited.
The 22 objectives and 132 learning outcomes in our ME bank are our own, written across ESA's three sections from public sources: the Ontario statutes and regulations on e-Laws that ESA lists for the exam, ESA's Ontario amendments, bulletins, Director's Orders and its Guideline for LECs and DMEs, the Criminal Code, and the 2024 OESC, read in a licensed copy. Every question records the Rule or section it was written from, and every one went through a separate, blind verification pass in which every calculation is recomputed. Questions that rest on the OESC explain the requirement in their own words and cite the Rule number; we never reproduce Code text, tables or definitions. Nothing is copied from courses, workbooks or recalled exam questions: ESA's Rules of Conduct forbid reproducing exam content, and a February 2026 court order bars selling it. For the exam format, the fee and what you can bring into the room, read the Ontario Master Electrician exam guide. Read how our questions are made.
Edited by Trevor Mulder · Last checked against ESA's Master Electrician Exam Information Package (Form 1293, 2026), its exam FAQ, its Annual Report 2025-26 and the Ontario statutes and regulations on e-Laws.
Why practice scores mislead
An open book does not tell you where to look.
You can bring the Code and the legislation into the ME exam, and still run out of time. Knowing that the OESC has a rule on EV charging circuits does not tell you what lets another load share one. Knowing that the OHSA sets up joint committees does not tell you how much preparation time a member gets. And a total score hides the trap in ESA's rule: 75 percent overall fails the exam if one section is under 60 percent. Our explanations give the reason and the Rule or section behind every option, and our mock exams put 80 questions in front of you in three hours and score each section on its own, so you find out whether every section holds, not just your average.
How TicketPrep prepares you
Built like a study tool, not a quiz app.
All three sections
The OESC, Worker Safety and Business Administration, and every one of the 22 objectives we wrote for them, at Standard and Advanced levels.
Every answer explained
Why the right answer is right, and why each of the other three is wrong, with the OESC Rule or the section of the Act behind it.
Timed mock exams
80 questions from all three sections in 180 minutes, 27, 27 and 26 by section. ESA does not publish the split, so that part is ours.
Both pass rules
Each mock is scored on 70 percent overall and 60 percent in every section, with each section's percentage, so a weak section never hides behind a good total.
Master Electrician exam questions
Before you start.
How many questions are on the ESA Master Electrician exam?
What is the pass mark for the Master Electrician exam?
What can you bring into the ME exam?
Which OESC edition does the ME exam use?
Who can write the Master Electrician exam?
Is the Master Electrician practice test free?
Are these real ESA exam questions?
Does practising here count as ESA's training requirement?
Find out where you actually stand.
Five free questions. No account and no email to start: you see right or wrong as you go and your score at the end. Your email is optional, only to unlock the written explanations. About five minutes.
Then Exam Pass is $69 one-time for 120 days of access, not a subscription, with a 7-day money-back guarantee. Write the ME exam and don't pass? You get 120 more days free. All-Access covers the ME exam, G3, 4A, 4B and all eighteen Red Seal trades for $119.
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