BC Electrical Field Safety Representative (FSR) Class B Exam
ACTUAL QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR.pdf - 199 Questions
This exam assesses mastery of the British Columbia Electrical Field Safety Representative (FSR) Class B
regulations, focusing on the application of the Canadian Electrical Code (CEC), WorkSafeBC regulations, and
safety management systems. It requires integration of code rules, hazard assessment, and regulatory compliance
in complex electrical work scenarios. It contains 199 multiple-choice questions, each with four distractors and a
fully worked rationale that explains why the keyed answer is correct. Content is organized into 10 focused
sections: Electrical Safety Regulations and Codes, Grounding and Bonding, Overcurrent Protection, Wiring
Methods and Materials, Hazardous Locations, Lockout/Tagout Procedures, Personal Protective Equipment (PPE),
Arc Flash Safety, Testing and Verification of Electrical Systems, Emergency Response and First Aid. Targeted
learning outcomes include: Interpret and apply CEC rules for electrical installations and alterations.; Identify
and mitigate electrical hazards per WorkSafeBC OHS provisions.; Evaluate compliance requirements for permits,
inspections, and safety plans.; Analyze scenarios involving utility interactions, grounding, and bonding.. Every
item has been reviewed for clinical accuracy, current guidelines, and clarity so that students can study with
confidence and self-correct as they work through the bank. Use it as a high-yield review immediately before the
exam, or as a structured practice tool during the unit - the rationales double as concise teaching notes. The
recommended writing time is 3 hours, with a passing score of 70%. Aligned with Meets BC Safety Authority
Section 1: Electrical Safety Regulations and Codes (Questions 1-20)
1 A contractor is installing a new service in a commercial building. The utility
requires a locked disconnect ahead of the meter. According to the CEC, what
is the minimum ampacity of the service conductors if the calculated load is
400 A and the service is 347/600V, three-phase?
A) 400 A
B) 500 A
C) 320 A
D) 450 A
Answer: A
Rationale: CEC Rule 8-104 requires that service conductors have an ampacity
not less than the calculated load. For continuous loads, the ampacity must be at
least 125% of the continuous load, but the question specifies 'calculated load'
which already includes demand factors. Therefore, 400 A is the minimum.
2 A Class B FSR is reviewing a temporary power installation for a
construction site. The site includes a generator as a separately derived
system. Which of the following grounding requirements applies to the
generator per CEC Section 10?
A) The generator must have a grounded neutral bonded to its frame.
,B) The generator must have an equipment grounding conductor but no neutral
bond.
C) The generator must be grounded through the utility supply only.
D) The generator must have a separate grounding electrode at the site.
Answer: A
Rationale: CEC Rule 10-204 requires that a separately derived system (e.g.,
generator) has its neutral bonded to the system grounding electrode at the
source. Option A correctly states this. Option B omits the neutral bond,
violating code. Option C is incorrect because utility grounding is not sufficient.
Option D is partially correct but missing the bond.
3 During an inspection, an FSR observes that a 600 V panelboard is installed
in a location where it could be subject to mechanical damage. What is the
minimum clearance required in front of the panelboard per CEC Rule 2-308?
A) 900 mm
B) 1.0 m
C) 1.2 m
D) 1.5 m
Answer: B
Rationale: CEC Rule 2-308 specifies a minimum working space of 1.0 m in
front of electrical equipment operating at over 150 V to ground and up to 600
V. Option B is correct. Option A (900 mm) is for equipment 150 V or less.
Options C and D exceed the requirement.
4 A Class B FSR is asked to approve a change in the electrical installation that
involves adding a 60 A sub-panel fed from a 100 A main panel. The feeder
will be 30 m long, run through an attic with ambient temperature of 40°C.
Using 75°C rated copper conductors, what is the minimum conductor size?
(Assume no other derating factors.)
A) No. 6 AWG
B) No. 4 AWG
C) No. 3 AWG
D) No. 2 AWG
Answer: B
Rationale: A 60 A feeder requires a conductor ampacity of at least 60 A. For
75°C copper, No. 6 AWG is rated 65 A at 30°C. With a 40°C ambient, the
,correction factor from Table 5A is 0.82 (for 75°C). 65 A x 0.82 = 53.3 A,
insufficient. No. 4 AWG is rated 85 A at 30°C; 85 x 0.82 = 69.7 A, sufficient.
Thus No. 4 AWG is the minimum.
5 An FSR is inspecting a new installation of a 225 kVA transformer (600 V
primary to 208/120 V secondary). The secondary conductors are run in a
raceway 5 m to the main distribution panel. According to CEC Rule 26-258,
what is the maximum length of secondary conductors permitted without
overcurrent protection at the transformer?
A) 3 m
B) 7.5 m
C) 15 m
D) No limit if conductors are sized for 125% of transformer rating.
Answer: B
Rationale: CEC Rule 26-258 permits secondary conductors of a transformer to
be protected by the primary overcurrent device if the secondary conductors do
not exceed 7.5 m in length and meet other conditions. Option B is correct.
Option A (3 m) is for service conductors. Option C (15 m) is for certain tap
rules. Option D is false; a limit exists.
6 A Class B FSR is evaluating a bonding installation for a swimming pool.
The pool has a metal frame, a pump motor, and a lighting fixture. Which of
the following components must be bonded together per CEC Section 68?
A) Only the metal frame and the pump motor.
B) The metal frame, pump motor, lighting fixture, and any associated metal
parts within 1.5 m.
C) Only the metal frame and the lighting fixture.
D) Only the pump motor and the lighting fixture.
Answer: B
Rationale: CEC Section 68 requires bonding of all metal parts of the pool
structure, including the metal frame, pump motor, lighting fixture, and any
other metal parts within 1.5 m of the pool. Option B is correct. Options A, C,
and D are incomplete.
, 7 An FSR is reviewing a plan for a multi-unit residential building with a 400 A
service. The service entrance conductors are protected by a 400 A fuse. What
is the maximum allowable number of service disconnects permitted per CEC
Rule 6-200?
A) 2
B) 4
C) 6
D) 8
Answer: C
Rationale: CEC Rule 6-200 permits up to six service disconnects per service.
This rule applies to the number of disconnects that can be grouped. Option C is
correct. Options A, B, and D are incorrect.
8 A Class B FSR is called to a site where a worker received a shock from a
portable electric drill. The drill is double-insulated and has a two-prong plug.
The receptacle is a standard 120 V duplex with no ground. What code rule is
most likely violated regarding the use of this equipment?
A) CEC Rule 4-010 requires all portable tools to be grounded.
B) CEC Rule 10-210 requires bonding of all non-current-carrying metal parts.
C) CEC Rule 26-702 requires double-insulated tools to have a grounding
conductor.
D) WorkSafeBC OHS Regulation 19.28 requires ground fault circuit
interrupter protection for all portable tools used on construction sites.
Answer: D
Rationale: WorkSafeBC OHS Regulation 19.28 requires GFCI protection for all
portable tools used on construction sites. The drill is double-insulated, so it
does not require a ground, but GFCI protection is still needed. Option A is
false because double-insulated tools are exempt from grounding. Option B is
about bonding, not directly applicable. Option C is false because
double-insulated tools do not require a grounding conductor.
9 An FSR is asked to approve a modification to an existing electrical room.
The room currently has a 600 V switchboard. The modification includes
installing a new 120/208 V panelboard adjacent to the switchboard. What is
the minimum clearance required between the switchboard and the panelboard
per CEC Rule 2-310?
ACTUAL QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR.pdf - 199 Questions
This exam assesses mastery of the British Columbia Electrical Field Safety Representative (FSR) Class B
regulations, focusing on the application of the Canadian Electrical Code (CEC), WorkSafeBC regulations, and
safety management systems. It requires integration of code rules, hazard assessment, and regulatory compliance
in complex electrical work scenarios. It contains 199 multiple-choice questions, each with four distractors and a
fully worked rationale that explains why the keyed answer is correct. Content is organized into 10 focused
sections: Electrical Safety Regulations and Codes, Grounding and Bonding, Overcurrent Protection, Wiring
Methods and Materials, Hazardous Locations, Lockout/Tagout Procedures, Personal Protective Equipment (PPE),
Arc Flash Safety, Testing and Verification of Electrical Systems, Emergency Response and First Aid. Targeted
learning outcomes include: Interpret and apply CEC rules for electrical installations and alterations.; Identify
and mitigate electrical hazards per WorkSafeBC OHS provisions.; Evaluate compliance requirements for permits,
inspections, and safety plans.; Analyze scenarios involving utility interactions, grounding, and bonding.. Every
item has been reviewed for clinical accuracy, current guidelines, and clarity so that students can study with
confidence and self-correct as they work through the bank. Use it as a high-yield review immediately before the
exam, or as a structured practice tool during the unit - the rationales double as concise teaching notes. The
recommended writing time is 3 hours, with a passing score of 70%. Aligned with Meets BC Safety Authority
Section 1: Electrical Safety Regulations and Codes (Questions 1-20)
1 A contractor is installing a new service in a commercial building. The utility
requires a locked disconnect ahead of the meter. According to the CEC, what
is the minimum ampacity of the service conductors if the calculated load is
400 A and the service is 347/600V, three-phase?
A) 400 A
B) 500 A
C) 320 A
D) 450 A
Answer: A
Rationale: CEC Rule 8-104 requires that service conductors have an ampacity
not less than the calculated load. For continuous loads, the ampacity must be at
least 125% of the continuous load, but the question specifies 'calculated load'
which already includes demand factors. Therefore, 400 A is the minimum.
2 A Class B FSR is reviewing a temporary power installation for a
construction site. The site includes a generator as a separately derived
system. Which of the following grounding requirements applies to the
generator per CEC Section 10?
A) The generator must have a grounded neutral bonded to its frame.
,B) The generator must have an equipment grounding conductor but no neutral
bond.
C) The generator must be grounded through the utility supply only.
D) The generator must have a separate grounding electrode at the site.
Answer: A
Rationale: CEC Rule 10-204 requires that a separately derived system (e.g.,
generator) has its neutral bonded to the system grounding electrode at the
source. Option A correctly states this. Option B omits the neutral bond,
violating code. Option C is incorrect because utility grounding is not sufficient.
Option D is partially correct but missing the bond.
3 During an inspection, an FSR observes that a 600 V panelboard is installed
in a location where it could be subject to mechanical damage. What is the
minimum clearance required in front of the panelboard per CEC Rule 2-308?
A) 900 mm
B) 1.0 m
C) 1.2 m
D) 1.5 m
Answer: B
Rationale: CEC Rule 2-308 specifies a minimum working space of 1.0 m in
front of electrical equipment operating at over 150 V to ground and up to 600
V. Option B is correct. Option A (900 mm) is for equipment 150 V or less.
Options C and D exceed the requirement.
4 A Class B FSR is asked to approve a change in the electrical installation that
involves adding a 60 A sub-panel fed from a 100 A main panel. The feeder
will be 30 m long, run through an attic with ambient temperature of 40°C.
Using 75°C rated copper conductors, what is the minimum conductor size?
(Assume no other derating factors.)
A) No. 6 AWG
B) No. 4 AWG
C) No. 3 AWG
D) No. 2 AWG
Answer: B
Rationale: A 60 A feeder requires a conductor ampacity of at least 60 A. For
75°C copper, No. 6 AWG is rated 65 A at 30°C. With a 40°C ambient, the
,correction factor from Table 5A is 0.82 (for 75°C). 65 A x 0.82 = 53.3 A,
insufficient. No. 4 AWG is rated 85 A at 30°C; 85 x 0.82 = 69.7 A, sufficient.
Thus No. 4 AWG is the minimum.
5 An FSR is inspecting a new installation of a 225 kVA transformer (600 V
primary to 208/120 V secondary). The secondary conductors are run in a
raceway 5 m to the main distribution panel. According to CEC Rule 26-258,
what is the maximum length of secondary conductors permitted without
overcurrent protection at the transformer?
A) 3 m
B) 7.5 m
C) 15 m
D) No limit if conductors are sized for 125% of transformer rating.
Answer: B
Rationale: CEC Rule 26-258 permits secondary conductors of a transformer to
be protected by the primary overcurrent device if the secondary conductors do
not exceed 7.5 m in length and meet other conditions. Option B is correct.
Option A (3 m) is for service conductors. Option C (15 m) is for certain tap
rules. Option D is false; a limit exists.
6 A Class B FSR is evaluating a bonding installation for a swimming pool.
The pool has a metal frame, a pump motor, and a lighting fixture. Which of
the following components must be bonded together per CEC Section 68?
A) Only the metal frame and the pump motor.
B) The metal frame, pump motor, lighting fixture, and any associated metal
parts within 1.5 m.
C) Only the metal frame and the lighting fixture.
D) Only the pump motor and the lighting fixture.
Answer: B
Rationale: CEC Section 68 requires bonding of all metal parts of the pool
structure, including the metal frame, pump motor, lighting fixture, and any
other metal parts within 1.5 m of the pool. Option B is correct. Options A, C,
and D are incomplete.
, 7 An FSR is reviewing a plan for a multi-unit residential building with a 400 A
service. The service entrance conductors are protected by a 400 A fuse. What
is the maximum allowable number of service disconnects permitted per CEC
Rule 6-200?
A) 2
B) 4
C) 6
D) 8
Answer: C
Rationale: CEC Rule 6-200 permits up to six service disconnects per service.
This rule applies to the number of disconnects that can be grouped. Option C is
correct. Options A, B, and D are incorrect.
8 A Class B FSR is called to a site where a worker received a shock from a
portable electric drill. The drill is double-insulated and has a two-prong plug.
The receptacle is a standard 120 V duplex with no ground. What code rule is
most likely violated regarding the use of this equipment?
A) CEC Rule 4-010 requires all portable tools to be grounded.
B) CEC Rule 10-210 requires bonding of all non-current-carrying metal parts.
C) CEC Rule 26-702 requires double-insulated tools to have a grounding
conductor.
D) WorkSafeBC OHS Regulation 19.28 requires ground fault circuit
interrupter protection for all portable tools used on construction sites.
Answer: D
Rationale: WorkSafeBC OHS Regulation 19.28 requires GFCI protection for all
portable tools used on construction sites. The drill is double-insulated, so it
does not require a ground, but GFCI protection is still needed. Option A is
false because double-insulated tools are exempt from grounding. Option B is
about bonding, not directly applicable. Option C is false because
double-insulated tools do not require a grounding conductor.
9 An FSR is asked to approve a modification to an existing electrical room.
The room currently has a 600 V switchboard. The modification includes
installing a new 120/208 V panelboard adjacent to the switchboard. What is
the minimum clearance required between the switchboard and the panelboard
per CEC Rule 2-310?
