Alberta Electrician Fourth Period AIT Exam – Complete Q&A
with Rationales (2026)
EXAM OVERVIEW
The Alberta Electrician Fourth Period technical training is the
final level of apprenticeship education before challenging the
Interprovincial Red Seal Exam. Fourth Period training builds
upon foundational knowledge from Periods 1 through 3,
covering advanced AC theory, three-phase power systems,
complex motor controls, the Canadian Electrical Code (CEC),
and power distribution systems . Students must achieve a
minimum cumulative weighted average of 65% across courses,
with no course mark below 50%, and must attain a 70% passing
mark on the AIT Period Final Exam to successfully complete
the period .
SECTION 1: CANADIAN ELECTRICAL CODE (CEC) &
REGULATIONS
1. According to the Canadian Electrical Code, what is the
primary purpose of bonding in an electrical installation?
A) To increase circuit resistance for safety purposes
B) To ensure continuity and provide a low-impedance path for
fault current to operate overcurrent protection devices
C) To reduce voltage drop in conductors and improve system
efficiency
D) To balance three-phase loads and prevent phase imbalances
,Correct Answer: B
Rationale: Bonding ensures fault current has a safe path to
ground for protective device operation. The CEC requires
bonding to establish an effective ground-fault current path that
will allow circuit breakers or fuses to operate quickly when a
fault occurs .
2. Which section of the Canadian Electrical Code specifically
addresses hazardous locations and their classification
requirements?
A) Section 10
B) Section 18
C) Section 20
D) Section 26
Correct Answer: B
Rationale: Section 18 of the CEC specifically addresses
hazardous locations, including the classification of areas where
flammable gases, vapors, or combustible dust may be present.
This section requires special wiring methods and equipment for
these locations .
3. What is the minimum passing grade required on the Alberta
AIT Fourth Period final exam to pass the period of training?
, A) 50%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Apprentices must achieve a 70% passing mark on
the AIT Period Final Exam to pass their period of training. This
is in addition to meeting course requirements with a minimum
cumulative weighted average of 65% and no course below
50% .
4. According to the Canadian Electrical Code, what is the
minimum size of conductor permitted for a branch circuit
supplying a 15 A lighting load?
A) 18 AWG
B) 16 AWG
C) 14 AWG
D) 12 AWG
Correct Answer: C
Rationale: CEC Table 2 specifies that 14 AWG copper is the
minimum conductor size for 15 A branch circuits in most
applications. Conductors must be sized to carry the load
without exceeding their ampacity .
with Rationales (2026)
EXAM OVERVIEW
The Alberta Electrician Fourth Period technical training is the
final level of apprenticeship education before challenging the
Interprovincial Red Seal Exam. Fourth Period training builds
upon foundational knowledge from Periods 1 through 3,
covering advanced AC theory, three-phase power systems,
complex motor controls, the Canadian Electrical Code (CEC),
and power distribution systems . Students must achieve a
minimum cumulative weighted average of 65% across courses,
with no course mark below 50%, and must attain a 70% passing
mark on the AIT Period Final Exam to successfully complete
the period .
SECTION 1: CANADIAN ELECTRICAL CODE (CEC) &
REGULATIONS
1. According to the Canadian Electrical Code, what is the
primary purpose of bonding in an electrical installation?
A) To increase circuit resistance for safety purposes
B) To ensure continuity and provide a low-impedance path for
fault current to operate overcurrent protection devices
C) To reduce voltage drop in conductors and improve system
efficiency
D) To balance three-phase loads and prevent phase imbalances
,Correct Answer: B
Rationale: Bonding ensures fault current has a safe path to
ground for protective device operation. The CEC requires
bonding to establish an effective ground-fault current path that
will allow circuit breakers or fuses to operate quickly when a
fault occurs .
2. Which section of the Canadian Electrical Code specifically
addresses hazardous locations and their classification
requirements?
A) Section 10
B) Section 18
C) Section 20
D) Section 26
Correct Answer: B
Rationale: Section 18 of the CEC specifically addresses
hazardous locations, including the classification of areas where
flammable gases, vapors, or combustible dust may be present.
This section requires special wiring methods and equipment for
these locations .
3. What is the minimum passing grade required on the Alberta
AIT Fourth Period final exam to pass the period of training?
, A) 50%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Apprentices must achieve a 70% passing mark on
the AIT Period Final Exam to pass their period of training. This
is in addition to meeting course requirements with a minimum
cumulative weighted average of 65% and no course below
50% .
4. According to the Canadian Electrical Code, what is the
minimum size of conductor permitted for a branch circuit
supplying a 15 A lighting load?
A) 18 AWG
B) 16 AWG
C) 14 AWG
D) 12 AWG
Correct Answer: C
Rationale: CEC Table 2 specifies that 14 AWG copper is the
minimum conductor size for 15 A branch circuits in most
applications. Conductors must be sized to carry the load
without exceeding their ampacity .
