Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. Which publication serves as the primary standard governing
electrical installations in Rhode Island?
A. International Residential Code (IRC) only
B. National Fire Protection Guide
C. National Electrical Code (NEC)
D. OSHA Construction Standards
Rationale: Rhode Island bases electrical installation requirements
primarily on the National Electrical Code (NEC), along with any state-
specific amendments. Journeyman electricians must be thoroughly
familiar with the NEC because it establishes the minimum safety
standards for electrical installations.
2. What is the primary purpose of grounding an electrical system?
,A. Increase circuit voltage
B. Provide a low-impedance path for fault current
C. Improve lighting brightness
D. Reduce conductor size
Rationale: Grounding provides a safe path for fault current, allowing
overcurrent protective devices to operate quickly and disconnect
dangerous faults, thereby minimizing shock and fire hazards.
3. Conductors connected in parallel must generally have a minimum
size of:
A. 4 AWG
B. 2 AWG
C. 1/0 AWG
D. 3/0 AWG
Rationale: NEC requirements generally permit conductors to be
connected in parallel only when they are 1/0 AWG or larger, provided
all parallel conductors meet the required installation criteria.
4. Which device is specifically intended to protect people from
electrical shock?
,A. Standard breaker
B. Time-delay fuse
C. Ground-Fault Circuit Interrupter (GFCI)
D. Disconnect switch
Rationale: GFCIs monitor current imbalance between the ungrounded
and grounded conductors and rapidly interrupt power when leakage
current indicates a possible shock hazard.
5. Ampacity primarily refers to:
A. Voltage drop
B. Circuit resistance
C. Maximum current a conductor can safely carry
D. Available fault current
Rationale: Ampacity is the maximum continuous current a conductor
can safely carry under specified installation conditions without
exceeding its temperature rating.
6. What is the minimum working space depth for equipment
operating at 0–150 volts to ground under Condition 1?
, A. 24 inches
B. 36 inches
C. 42 inches
D. 48 inches
Rationale: The NEC requires a minimum working space depth of 36
inches for most equipment operating at 0–150 volts to ground under
Condition 1, ensuring safe servicing and maintenance.
7. Which conductor is intentionally connected to earth?
A. Equipment grounding conductor
B. Grounded conductor
C. Bonding jumper
D. Traveler conductor
Rationale: The grounded conductor, commonly the neutral, is
intentionally connected to earth at the service or separately derived
system to establish system grounding.
8. A branch circuit supplying continuous loads must generally be
sized at: