ALBERTA MASTER ELECTRICIAN CERTIFICATION EXAM – QUESTIONS AND ANSWERS | VERIFIED
AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE
Core Domains
- Canadian Electrical Code (CEC) Regulations and Interpretations
- Electrical Theory and Applied Mathematics
- Power Distribution and System Protection
- Motor Controls and Variable Frequency Drives
- Hazardous Locations and Class/Division Requirements
- Grounding, Bonding, and Lightning Protection
- Electrical Safety, CSA Z462, and Arc Flash
- Project Management, Estimating, and Contract Administration
- Fire Alarm, Emergency Systems, and Life Safety
- Inspection, Testing, and Commissioning Procedures
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical
competencies required of a Master Electrician in Alberta. The questions evaluate a candidate's mastery
of the Canadian Electrical Code, advanced electrical theory, and the management of complex
electrical systems. The assessment balances foundational theory with real-world, scenario-based
applications, requiring critical thinking and sound decision-making. Candidates will demonstrate their
ability to apply regulations, interpret technical data, and ensure safety and compliance in professional
practice. This document serves as a definitive tool for exam preparation, providing verified answers
and clear rationales for each question to ensure a deep understanding of the material.
SECTION ONE: QUESTIONS 1 – 100
1. According to the Canadian Electrical Code, what is the minimum vertical clearance for a service
conductor (0-750V) over a residential driveway?
A. 3.5 meters
B. 4.0 meters
C. 5.0 meters
D. 6.0 meters
🟢 B. 4.0 meters
🔴 Explanation: Rule 6-112 of the CEC specifies a minimum vertical clearance of 4.0 meters for
service conductors over residential driveways. Option A is the clearance over a sidewalk, Option C is
over a public street, and Option D is a distractor.
2. When sizing a neutral conductor for a 3-phase, 4-wire feeder, which of the following is the
primary consideration?
A. The largest ungrounded conductor
B. The maximum unbalanced load
C. The total harmonic distortion
D. The overcurrent device rating
,🟢 B. The maximum unbalanced load
🔴 Explanation: The neutral conductor must be sized to handle the maximum unbalanced load
returning to the source. While harmonic distortion affects neutral sizing, the primary basis is the
load imbalance. Option A is a rule for equipment grounding conductors, and Option D is for sizing
branch circuit conductors.
3. A 480V motor has a full-load current of 30A. Using the CEC, what is the minimum size of
copper conductors required for this branch circuit?
A. #10 AWG
B. #8 AWG
C. #6 AWG
D. #4 AWG
🟢 B. #8 AWG
🔴 Explanation: According to Table 2, a #8 AWG copper conductor has an ampacity of 50A. The
branch circuit conductors must have an ampacity of at least 125% of the motor full-load current
(30A * 1.25 = 37.5A). #10 AWG is rated for 35A and is insufficient. #8 AWG is the minimum size that
meets this requirement.
4. In a dwelling unit, which of the following loads is NOT required to be included in the service
calculation?
A. Space heating
B. Appliances
C. Electric vehicle charger
D. Fireplace fan
🟢 D. Fireplace fan
🔴 Explanation: A fireplace fan, if it is a permanently installed accessory to a gas fireplace, is not
considered a fixed load and is not included in the standard service calculation. Options A, B, and C
are all mandatory loads to be calculated per Section 8 of the CEC.
5. What is the maximum allowable voltage drop for a branch circuit supplying a fire pump
motor?
A. 3%
B. 5%
C. 10%
D. 15%
🟢 D. 15%
🔴 Explanation: CEC Rule 32-206 mandates that the voltage at the fire pump motor terminals shall
not drop more than 15% below the rated voltage under motor starting conditions. Option A and B
are typical recommendations for general branch circuits, and Option C is for other emergency
systems.
6. A transformer is rated 75 kVA, 600V primary, 120/208V secondary. What is the rated primary
current?
A. 72.2 A
B. 83.3 A
C. 125 A
D. 208 A
, 🟢 A. 72.2 A
🔴 Explanation: Primary current is calculated as I = kVA / (V * √3) for a three-phase transformer. I =
75,000 / (600 * 1.732) = 72.17 A. Option B is the secondary line current, Option C is a common fuse
size, and Option D is the secondary voltage.
7. Which of the following is a requirement for a bonding conductor in a swimming pool
installation?
A. Must be unspliced
B. Must be copper
C. Must be #6 AWG or larger
D. All of the above
🟢 D. All of the above
🔴 Explanation: Section 68 of the CEC requires the bonding conductor to be a continuous,
unspliced, #6 AWG (or larger) copper conductor. Options A, B, and C are all correct and are
necessary for a compliant installation to ensure equipotential bonding.
8. A single-phase, 120V branch circuit is to be installed for a load of 12A. What is the minimum
size of a Type S fuse required for overcurrent protection?
A. 12A
B. 15A
C. 20A
D. 25A
🟢 B. 15A
🔴 Explanation: Overcurrent devices must be sized to protect the conductor and be rated not less
than the load. Since standard fuse sizes are 15A, 20A, etc., the minimum standard size that exceeds
the 12A load is 15A. The conductor must also be sized accordingly.
9. When calculating the service size for a single-family dwelling, a floor area of 180 sq. meters,
what is the basic demand load for general lighting and receptacles?
A. 3,600 W
B. 4,500 W
C. 5,400 W
D. 6,000 W
🟢 C. 5,400 W
🔴 Explanation: The CEC requires a basic load of 30W per sq. meter for dwelling units. 180 sq.
meters * 30 W/m² = 5,400 W. Options A, B, and D are incorrect calculations.
10. What is the primary purpose of an isolating transformer used in a patient care area?
A. To reduce voltage
B. To increase efficiency
C. To limit fault current
D. To prevent electric shock
🟢 D. To prevent electric shock
🔴 Explanation: Isolating transformers are used in patient care areas (Section 24) to create an
ungrounded system. This limits the current that can flow to ground, significantly reducing the risk
of electric shock to a patient, even in a fault condition. Options A, B, and C are secondary benefits
or incorrect.
AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM
UPDATE
Core Domains
- Canadian Electrical Code (CEC) Regulations and Interpretations
- Electrical Theory and Applied Mathematics
- Power Distribution and System Protection
- Motor Controls and Variable Frequency Drives
- Hazardous Locations and Class/Division Requirements
- Grounding, Bonding, and Lightning Protection
- Electrical Safety, CSA Z462, and Arc Flash
- Project Management, Estimating, and Contract Administration
- Fire Alarm, Emergency Systems, and Life Safety
- Inspection, Testing, and Commissioning Procedures
Introduction
This comprehensive examination is designed to rigorously assess the knowledge and practical
competencies required of a Master Electrician in Alberta. The questions evaluate a candidate's mastery
of the Canadian Electrical Code, advanced electrical theory, and the management of complex
electrical systems. The assessment balances foundational theory with real-world, scenario-based
applications, requiring critical thinking and sound decision-making. Candidates will demonstrate their
ability to apply regulations, interpret technical data, and ensure safety and compliance in professional
practice. This document serves as a definitive tool for exam preparation, providing verified answers
and clear rationales for each question to ensure a deep understanding of the material.
SECTION ONE: QUESTIONS 1 – 100
1. According to the Canadian Electrical Code, what is the minimum vertical clearance for a service
conductor (0-750V) over a residential driveway?
A. 3.5 meters
B. 4.0 meters
C. 5.0 meters
D. 6.0 meters
🟢 B. 4.0 meters
🔴 Explanation: Rule 6-112 of the CEC specifies a minimum vertical clearance of 4.0 meters for
service conductors over residential driveways. Option A is the clearance over a sidewalk, Option C is
over a public street, and Option D is a distractor.
2. When sizing a neutral conductor for a 3-phase, 4-wire feeder, which of the following is the
primary consideration?
A. The largest ungrounded conductor
B. The maximum unbalanced load
C. The total harmonic distortion
D. The overcurrent device rating
,🟢 B. The maximum unbalanced load
🔴 Explanation: The neutral conductor must be sized to handle the maximum unbalanced load
returning to the source. While harmonic distortion affects neutral sizing, the primary basis is the
load imbalance. Option A is a rule for equipment grounding conductors, and Option D is for sizing
branch circuit conductors.
3. A 480V motor has a full-load current of 30A. Using the CEC, what is the minimum size of
copper conductors required for this branch circuit?
A. #10 AWG
B. #8 AWG
C. #6 AWG
D. #4 AWG
🟢 B. #8 AWG
🔴 Explanation: According to Table 2, a #8 AWG copper conductor has an ampacity of 50A. The
branch circuit conductors must have an ampacity of at least 125% of the motor full-load current
(30A * 1.25 = 37.5A). #10 AWG is rated for 35A and is insufficient. #8 AWG is the minimum size that
meets this requirement.
4. In a dwelling unit, which of the following loads is NOT required to be included in the service
calculation?
A. Space heating
B. Appliances
C. Electric vehicle charger
D. Fireplace fan
🟢 D. Fireplace fan
🔴 Explanation: A fireplace fan, if it is a permanently installed accessory to a gas fireplace, is not
considered a fixed load and is not included in the standard service calculation. Options A, B, and C
are all mandatory loads to be calculated per Section 8 of the CEC.
5. What is the maximum allowable voltage drop for a branch circuit supplying a fire pump
motor?
A. 3%
B. 5%
C. 10%
D. 15%
🟢 D. 15%
🔴 Explanation: CEC Rule 32-206 mandates that the voltage at the fire pump motor terminals shall
not drop more than 15% below the rated voltage under motor starting conditions. Option A and B
are typical recommendations for general branch circuits, and Option C is for other emergency
systems.
6. A transformer is rated 75 kVA, 600V primary, 120/208V secondary. What is the rated primary
current?
A. 72.2 A
B. 83.3 A
C. 125 A
D. 208 A
, 🟢 A. 72.2 A
🔴 Explanation: Primary current is calculated as I = kVA / (V * √3) for a three-phase transformer. I =
75,000 / (600 * 1.732) = 72.17 A. Option B is the secondary line current, Option C is a common fuse
size, and Option D is the secondary voltage.
7. Which of the following is a requirement for a bonding conductor in a swimming pool
installation?
A. Must be unspliced
B. Must be copper
C. Must be #6 AWG or larger
D. All of the above
🟢 D. All of the above
🔴 Explanation: Section 68 of the CEC requires the bonding conductor to be a continuous,
unspliced, #6 AWG (or larger) copper conductor. Options A, B, and C are all correct and are
necessary for a compliant installation to ensure equipotential bonding.
8. A single-phase, 120V branch circuit is to be installed for a load of 12A. What is the minimum
size of a Type S fuse required for overcurrent protection?
A. 12A
B. 15A
C. 20A
D. 25A
🟢 B. 15A
🔴 Explanation: Overcurrent devices must be sized to protect the conductor and be rated not less
than the load. Since standard fuse sizes are 15A, 20A, etc., the minimum standard size that exceeds
the 12A load is 15A. The conductor must also be sized accordingly.
9. When calculating the service size for a single-family dwelling, a floor area of 180 sq. meters,
what is the basic demand load for general lighting and receptacles?
A. 3,600 W
B. 4,500 W
C. 5,400 W
D. 6,000 W
🟢 C. 5,400 W
🔴 Explanation: The CEC requires a basic load of 30W per sq. meter for dwelling units. 180 sq.
meters * 30 W/m² = 5,400 W. Options A, B, and D are incorrect calculations.
10. What is the primary purpose of an isolating transformer used in a patient care area?
A. To reduce voltage
B. To increase efficiency
C. To limit fault current
D. To prevent electric shock
🟢 D. To prevent electric shock
🔴 Explanation: Isolating transformers are used in patient care areas (Section 24) to create an
ungrounded system. This limits the current that can flow to ground, significantly reducing the risk
of electric shock to a patient, even in a fault condition. Options A, B, and C are secondary benefits
or incorrect.
