Certification Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of a grounding conductor in
electrical systems?
a) To carry normal operating current
b) To reduce voltage drop
c) To provide a path for fault current to the ground
d) To protect against electromagnetic interference
Grounding conductors ensure safety by providing a low-resistance path
for fault current, reducing the risk of shock or fire.
2. In Saskatchewan, which electrical code is primarily used for
construction electricians?
a) National Electrical Code (NEC)
b) International Electrotechnical Commission (IEC)
c) Canadian Electrical Code (CEC)
d) Occupational Health and Safety Code
The Canadian Electrical Code sets the standards for electrical
installations in Canada, including Saskatchewan.
3. What type of wiring method is typically used for commercial
construction in Saskatchewan?
a) Non-metallic (NM) cable
b) Metallic conduit (EMT or RMC)
, c) Surface-mounted raceway
d) Knob-and-tube wiring
Metallic conduit protects wiring in commercial environments from
physical damage and meets code requirements.
4. A 15 A circuit breaker is installed in a branch circuit. What is the
maximum continuous load allowed on this breaker?
a) 12 A
b) 12 A (80% of 15 A)
c) 15 A
d) 20 A
The 80% rule ensures that the breaker is not overloaded under
continuous operation, preventing nuisance trips and hazards.
5. Which of the following is an example of a Class A fire?
a) Electrical fire
b) Wood, paper, and cloth fire
c) Flammable liquid fire
d) Combustible metal fire
Class A fires involve ordinary combustibles like wood and paper,
requiring water or foam extinguishers.
6. When splicing conductors in a junction box, what is the minimum
code requirement for securing the splice?
a) Tape only
b) Approved wire connector
c) Heat shrink tubing
d) Electrical tape and staple
,The Canadian Electrical Code requires approved connectors to ensure
mechanical and electrical safety.
7. In Saskatchewan, which safety standard governs personal
protective equipment for electricians?
a) OSHA 1910
b) NFPA 70E
c) CSA Z462
d) ANSI Z87.1
CSA Z462 provides guidelines for electrical safety including PPE for
Canadian workplaces.
8. What is the minimum clearance required for electrical panels from
the floor?
a) 0.5 m
b) 1.0 m
c) 1.5 m
d) 2.0 m
Electrical panels must be accessible and safe; 1.5 m is standard
minimum working clearance in many installations.
9. Which device is used to protect a circuit from both overload and
short-circuit conditions?
a) Fuse
b) Circuit breaker
c) Isolator switch
d) Ground fault relay
Circuit breakers interrupt current flow under overload or short-circuit
conditions, protecting wiring and equipment.
, 10. A 3-phase, 4-wire system has a phase-to-phase voltage of
600 V. What is the phase-to-neutral voltage?
a) 208 V
b) 277 V
c) 347 V
d) 480 V
Phase-to-neutral voltage in a 3-phase system is calculated by dividing
phase-to-phase voltage by √3.
11. What is the main hazard of working with energized circuits?
a) Cuts
b) Slips and falls
c) Electrical shock or arc flash
d) Eye strain
Contact with live circuits can cause severe injury or death through shock
or arc flash.
12. Which type of conduit is most suitable for underground
electrical installations?
a) EMT
b) PVC Schedule 40 or 80
c) Surface raceway
d) Rigid steel above ground
PVC conduits are corrosion-resistant and commonly used for direct
burial or underground installations.
13. When installing a fluorescent light fixture, the ballast is
designed to:
a) Increase voltage to the lamp