ONTARIO ELEVATING DEVICES MECHANIC (EDM-B) CERTIFICATION EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
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Core Domains
*- Safety and Personal Protective Equipment (PPE)*
- Construction Hoist Types and Terminology
*- CSA B44, Z185, Z256 Safety Codes and TSSA Regulations*
*- Mechanical Print Reading and Layout*
*- Rigging and Hoisting Equipment*
*- Electrical Systems and Motor Controls*
*- Preventive Maintenance and Inspection Procedures*
*- Hoist Car, Hoistway, and Pit Equipment*
*- Lockout/Tagout and Electrical Safety*
*- Ethics and Professional Standards*
Introduction
This examination assesses the knowledge and competencies required for Ontario Elevating Devices Mechanic
Class B (EDM-B) certification, specializing in construction hoists. The exam evaluates understanding of safety
protocols, applicable codes and regulations, mechanical and electrical systems, rigging practices,
maintenance procedures, and professional ethics. Questions are multiple-choice and scenario-based,
emphasizing real-world application and critical decision-making in construction hoist installation,
maintenance, testing, and service. Candidates must demonstrate proficiency in identifying hazards,
interpreting prints, performing inspections, and ensuring compliance with CSA standards and TSSA
requirements. A minimum passing grade of 70% is required to obtain certification.
SECTION ONE: QUESTIONS 1–100
,Question 1
What is the primary purpose of lockout/tagout procedures when working on construction hoist electrical
systems?
A. To improve system efficiency during maintenance
B. To prevent unauthorized personnel from entering the hoistway
C. To ensure zero energy state and prevent accidental energization
D. To reduce wear on electrical components during service
🟢 C. To ensure zero energy state and prevent accidental energization
🔴 RATIONALE: Lockout/tagout procedures are designed to isolate energy sources and verify no power exists,
preventing accidental energization that could cause injury or death to workers performing maintenance
[curriculum 1.5].
Question 2
Which CSA standard specifically covers the Safety Code for Personnel Hoists used in construction?
A. CSA B44
B. CSA Z185
C. CSA Z256
D. CSA B355
🟢 B. CSA Z185
,🔴 RATIONALE: CSA Z185 is the Safety Code for Personnel Hoists, while CSA Z256 covers Material Hoists,
and CSA B44 covers general hoists/elevators [curriculum 2.2.7, 2.3.6].
Question 3
When positioning a ladder for access to construction hoist equipment, what is the correct ladder angle limit?
A. 45 degrees from horizontal
B. 60 degrees from horizontal
C. 75 degrees from horizontal (4:1 ratio)
D. 90 degrees from horizontal
🟢 C. 75 degrees from horizontal (4:1 ratio)
🔴 RATIONALE: The correct ladder angle is approximately 75 degrees from horizontal, following a 4:1 ratio
(one unit horizontal for every four units vertical) for safe climbing [curriculum 4.1].
Question 4
What is the minimum passing grade required to pass the EDM-B certification examination?
A. 60%
B. 65%
C. 70%
D. 75%
🟢 C. 70%
, 🔴 RATIONALE: TSSA requires a minimum grade of 70% to pass the EDM-B class-specific certification
examination.
Question 5
Which organization administers the certification of elevating device mechanics in Ontario?
A. Ministry of Labour
B. Technical Standards and Safety Authority (TSSA)
C. CSA Group
D. Workplace Safety & Insurance Board (WSIB)
🟢 B. Technical Standards and Safety Authority (TSSA)
🔴 RATIONALE: TSSA administers certification of occupations regulated under the Technical Safety and Safety
Act, 2000, including elevating device mechanics.
Question 6
What type of hazard is primarily associated with working in a hoistway pit area?
A. Exposure to high concentrations of oxygen
B. Moving counterweights and overhead deflector sheaves
C. Excessive heat from electrical panels
D. Radiation from control systems
🟢 B. Moving counterweights and overhead deflector sheaves
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT
DOWNLOAD PDF
Core Domains
*- Safety and Personal Protective Equipment (PPE)*
- Construction Hoist Types and Terminology
*- CSA B44, Z185, Z256 Safety Codes and TSSA Regulations*
*- Mechanical Print Reading and Layout*
*- Rigging and Hoisting Equipment*
*- Electrical Systems and Motor Controls*
*- Preventive Maintenance and Inspection Procedures*
*- Hoist Car, Hoistway, and Pit Equipment*
*- Lockout/Tagout and Electrical Safety*
*- Ethics and Professional Standards*
Introduction
This examination assesses the knowledge and competencies required for Ontario Elevating Devices Mechanic
Class B (EDM-B) certification, specializing in construction hoists. The exam evaluates understanding of safety
protocols, applicable codes and regulations, mechanical and electrical systems, rigging practices,
maintenance procedures, and professional ethics. Questions are multiple-choice and scenario-based,
emphasizing real-world application and critical decision-making in construction hoist installation,
maintenance, testing, and service. Candidates must demonstrate proficiency in identifying hazards,
interpreting prints, performing inspections, and ensuring compliance with CSA standards and TSSA
requirements. A minimum passing grade of 70% is required to obtain certification.
SECTION ONE: QUESTIONS 1–100
,Question 1
What is the primary purpose of lockout/tagout procedures when working on construction hoist electrical
systems?
A. To improve system efficiency during maintenance
B. To prevent unauthorized personnel from entering the hoistway
C. To ensure zero energy state and prevent accidental energization
D. To reduce wear on electrical components during service
🟢 C. To ensure zero energy state and prevent accidental energization
🔴 RATIONALE: Lockout/tagout procedures are designed to isolate energy sources and verify no power exists,
preventing accidental energization that could cause injury or death to workers performing maintenance
[curriculum 1.5].
Question 2
Which CSA standard specifically covers the Safety Code for Personnel Hoists used in construction?
A. CSA B44
B. CSA Z185
C. CSA Z256
D. CSA B355
🟢 B. CSA Z185
,🔴 RATIONALE: CSA Z185 is the Safety Code for Personnel Hoists, while CSA Z256 covers Material Hoists,
and CSA B44 covers general hoists/elevators [curriculum 2.2.7, 2.3.6].
Question 3
When positioning a ladder for access to construction hoist equipment, what is the correct ladder angle limit?
A. 45 degrees from horizontal
B. 60 degrees from horizontal
C. 75 degrees from horizontal (4:1 ratio)
D. 90 degrees from horizontal
🟢 C. 75 degrees from horizontal (4:1 ratio)
🔴 RATIONALE: The correct ladder angle is approximately 75 degrees from horizontal, following a 4:1 ratio
(one unit horizontal for every four units vertical) for safe climbing [curriculum 4.1].
Question 4
What is the minimum passing grade required to pass the EDM-B certification examination?
A. 60%
B. 65%
C. 70%
D. 75%
🟢 C. 70%
, 🔴 RATIONALE: TSSA requires a minimum grade of 70% to pass the EDM-B class-specific certification
examination.
Question 5
Which organization administers the certification of elevating device mechanics in Ontario?
A. Ministry of Labour
B. Technical Standards and Safety Authority (TSSA)
C. CSA Group
D. Workplace Safety & Insurance Board (WSIB)
🟢 B. Technical Standards and Safety Authority (TSSA)
🔴 RATIONALE: TSSA administers certification of occupations regulated under the Technical Safety and Safety
Act, 2000, including elevating device mechanics.
Question 6
What type of hazard is primarily associated with working in a hoistway pit area?
A. Exposure to high concentrations of oxygen
B. Moving counterweights and overhead deflector sheaves
C. Excessive heat from electrical panels
D. Radiation from control systems
🟢 B. Moving counterweights and overhead deflector sheaves
