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⚡ 3rd Class Part B (3B) · Ontario

3rd Class Part B (3B) power engineer practice exam — Ontario

Studying for the 3rd Class Part B (3B) power engineering exam in Ontario? Practise with 808 original, syllabus-mapped questions, sit unlimited mock exams in the standardized SOPEEC exam format, and walk in knowing exactly where you stand.

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Original questions written to the public ABSA/SOPEEC syllabus (AB-053) — not copied from any secured exam or textbook. Independent; not affiliated with Technical Standards and Safety Authority, SOPEEC, or any regulator.

808
Exam-style questions
100 MCQ
Mock exam format
3 hr
Per paper
65%
SOPEEC pass mark

The 3rd Class Part B (3B) exam in Ontario

In Ontario, power engineering certification is administered by Technical Standards and Safety Authority (TSSA). The 3rd Class exam is written as separate papers (Part A and Part B), each 100 multiple-choice questions, 3 hours, 65% to pass. This course covers Part B (3B). Ontario uses the standardized SOPEEC papers, so a question bank keyed to the national SOPEEC syllabus applies directly.

Regulator: Technical Standards and Safety Authority. Last verified 15 June 2026 — confirm current requirements with Technical Standards and Safety Authority before you register.

Is the 3rd Class Part B (3B) right for you in Ontario?

The 3rd Class is a shift-engineer-level certification — for operating larger, higher-pressure plants and supervising junior operators.

  • Arenas & ice rinks: Refrigeration Operator Class B is the arena/cold-storage ticket; plants over 22 kW register with TSSA.
  • Pools & aquatic centres: Pools are regulated under O. Reg. 565 (public health), not TSSA; Lifesaving Society Pool Operator or CPO are the standard credentials.
  • Requirements vary by plant size and facility — confirm what your role needs with Technical Standards and Safety Authority.

What the 3rd Class Part B (3B) covers

All 808 questions are mapped to the 13 units of the SOPEEC 3rd Class syllabus (ABSA AB-053), each with a worked explanation.

§13Boilers
§14Boiler Control Systems
§15Feedwater Treatment
§16Pumps
§17Welding Procedures and Inspection
§18Pressure Vessels
§19Prime Movers
§20Cogeneration
§21Compressors
§22Refrigeration
§23Special Industrial Equipment
§24Wastewater Treatment
§25Plant Maintenance and Administration

Exam fees & registration in Ontario

Approximately $225–285 all-in per exam paper (TSSA fee + Prometric test-centre fee); fees rose 3.8% May 1, 2025.

You register and write through Technical Standards and Safety Authority. SteamTicket is the independent practice bank you study with first — a one-time $89 purchase, separate from any regulator fee. Fees last verified 15 June 2026; verify with Technical Standards and Safety Authority.

What you get — and what you don’t pay

Most exam prep is a subscription that bills until you cancel. The 3rd Class Part B (3B) bank is one payment, then it’s yours.

SteamTicket 3rd Class Part B (3B) — $89 once

  • All 808 original exam-style questions
  • Worked explanation on every answer
  • Unlimited mock exams in the 100-question / 3-hour exam format
  • Adaptive SMART Quiz — weak units first
  • Works offline, on any device
  • Lifetime access, including future updates

A typical subscription app

  • Bills monthly — auto-renews until you cancel
  • Access stops when you stop paying
  • Costs more the longer you study
  • Often locks mock exams behind a higher tier
Try 20 free questions Full course details

3rd Class Part B (3B) in Ontario — FAQ

Is SteamTicket affiliated with Technical Standards and Safety Authority?
No. SteamTicket is an independent study tool — not affiliated with, endorsed by, or connected to Technical Standards and Safety Authority, SOPEEC, or any regulator. We are the practice bank you study with; Technical Standards and Safety Authority administers and certifies the exam.
Are these real 3rd Class exam questions?
No. Every question is original, written objective-by-objective to the public ABSA/SOPEEC 3rd Class syllabus (AB-053) — the same style, scope, and difficulty as the exam, without copying any secured exam or textbook.
Does this match the Ontario (Technical Standards and Safety Authority) 3rd Class exam?
Yes. Ontario uses the standardized SOPEEC 3rd Class exam — 100 multiple-choice questions, 3 hours, 65% to pass — the same papers written across SOPEEC provinces, so SteamTicket's syllabus-mapped bank applies directly. Always confirm current requirements with Technical Standards and Safety Authority before you register.
What does the 3rd Class exam cost in Ontario?
Approximately $225–285 all-in per exam paper (TSSA fee + Prometric test-centre fee); fees rose 3.8% May 1, 2025. Fees are set by Technical Standards and Safety Authority and can change — verify the current amount with Technical Standards and Safety Authority before registering. SteamTicket's question bank is a separate one-time purchase of $89.
Where do I register for the 3rd Class exam in Ontario?
You register and write through Technical Standards and Safety Authority. SteamTicket is not a registration or certifying body — we are the independent practice bank you use to prepare first.
SteamTicket is an independent study tool. Not affiliated with or endorsed by Technical Standards and Safety Authority, SOPEEC, or any provincial regulator. Exam, fee, and eligibility details are general information — verify current requirements with Technical Standards and Safety Authority before applying.

More for Ontario: Ontario certification overview · 3rd Class Part B (3B) course · all provinces