Alaska Electrical Administrator
Examination Electrical Administrator
(Residential) Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the National Electrical Code (NEC)?
A. To design electrical appliances
B. To establish minimum safety standards for electrical installations
C. To replace local building codes
D. To regulate electrical pricing
Rationale: The NEC is primarily adopted to ensure safe electrical design,
installation, and inspection practices. It is not a design manual or pricing
guide but a minimum safety standard to reduce electrical hazards such as
shock and fire.
2. Which organization publishes the NEC?
A. OSHA
B. NFPA
C. IEEE
D. ANSI
Rationale: The NEC is published by the National Fire Protection
Association (NFPA), specifically NFPA 70. It is widely adopted across
jurisdictions for electrical safety.
,3. What is the minimum clearance required for working space in front of
electrical equipment (typical residential 120/240V)?
A. 2 feet
B. 3 feet
C. 3 feet minimum depth
D. 6 feet
Rationale: NEC requires a minimum working space depth of 3 feet for
most residential voltage systems to ensure safe access for maintenance
and emergency work.
4. A GFCI device primarily protects against:
A. Overvoltage
B. Ground faults and electric shock
C. Short circuits
D. Power surges
Rationale: Ground Fault Circuit Interrupters detect leakage current and
quickly shut off power to prevent electric shock hazards.
5. AFCI protection is mainly designed to prevent:
A. Overcurrent
B. Lightning damage
C. Electrical fires caused by arcing faults
D. Voltage drops
Rationale: Arc Fault Circuit Interrupters detect dangerous arcing
conditions in wiring that can lead to fires.
6. The standard voltage for most residential services in Alaska is:
A. 120V only
B. 120/240V single-phase
C. 277/480V
D. 600V three-phase
Rationale: Most residential buildings use split-phase 120/240V systems for
general loads and appliances.
, 7. What does a circuit breaker primarily protect?
A. Appliances
B. Voltage stability
C. Conductors from overcurrent
D. Power factor
Rationale: Circuit breakers protect wiring by interrupting current flow
during overload or short circuit conditions.
8. The grounding electrode system is intended to:
A. Carry normal load current
B. Stabilize voltage and provide fault current path
C. Increase resistance
D. Reduce conductor size
Rationale: Grounding systems provide a reference to earth and a safe path
for fault currents.
9. Which conductor is typically used as the equipment grounding conductor?
A. White
B. Red
C. Bare or green insulated
D. Black
Rationale: Green or bare conductors are reserved for grounding to avoid
confusion with current-carrying conductors.
10.Voltage drop in branch circuits is ideally limited to:
A. 10%
B. 3%
C. 15%
D. 20%
Rationale: NEC recommends a maximum of 3% voltage drop on branch
circuits for proper equipment performance.
11.What is the purpose of a main disconnect?
A. Meter reading
B. Shutting off all power to a building
Examination Electrical Administrator
(Residential) Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the National Electrical Code (NEC)?
A. To design electrical appliances
B. To establish minimum safety standards for electrical installations
C. To replace local building codes
D. To regulate electrical pricing
Rationale: The NEC is primarily adopted to ensure safe electrical design,
installation, and inspection practices. It is not a design manual or pricing
guide but a minimum safety standard to reduce electrical hazards such as
shock and fire.
2. Which organization publishes the NEC?
A. OSHA
B. NFPA
C. IEEE
D. ANSI
Rationale: The NEC is published by the National Fire Protection
Association (NFPA), specifically NFPA 70. It is widely adopted across
jurisdictions for electrical safety.
,3. What is the minimum clearance required for working space in front of
electrical equipment (typical residential 120/240V)?
A. 2 feet
B. 3 feet
C. 3 feet minimum depth
D. 6 feet
Rationale: NEC requires a minimum working space depth of 3 feet for
most residential voltage systems to ensure safe access for maintenance
and emergency work.
4. A GFCI device primarily protects against:
A. Overvoltage
B. Ground faults and electric shock
C. Short circuits
D. Power surges
Rationale: Ground Fault Circuit Interrupters detect leakage current and
quickly shut off power to prevent electric shock hazards.
5. AFCI protection is mainly designed to prevent:
A. Overcurrent
B. Lightning damage
C. Electrical fires caused by arcing faults
D. Voltage drops
Rationale: Arc Fault Circuit Interrupters detect dangerous arcing
conditions in wiring that can lead to fires.
6. The standard voltage for most residential services in Alaska is:
A. 120V only
B. 120/240V single-phase
C. 277/480V
D. 600V three-phase
Rationale: Most residential buildings use split-phase 120/240V systems for
general loads and appliances.
, 7. What does a circuit breaker primarily protect?
A. Appliances
B. Voltage stability
C. Conductors from overcurrent
D. Power factor
Rationale: Circuit breakers protect wiring by interrupting current flow
during overload or short circuit conditions.
8. The grounding electrode system is intended to:
A. Carry normal load current
B. Stabilize voltage and provide fault current path
C. Increase resistance
D. Reduce conductor size
Rationale: Grounding systems provide a reference to earth and a safe path
for fault currents.
9. Which conductor is typically used as the equipment grounding conductor?
A. White
B. Red
C. Bare or green insulated
D. Black
Rationale: Green or bare conductors are reserved for grounding to avoid
confusion with current-carrying conductors.
10.Voltage drop in branch circuits is ideally limited to:
A. 10%
B. 3%
C. 15%
D. 20%
Rationale: NEC recommends a maximum of 3% voltage drop on branch
circuits for proper equipment performance.
11.What is the purpose of a main disconnect?
A. Meter reading
B. Shutting off all power to a building
