INDIANA ELECTRICAL CONTRACTOR EXAM
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. A dwelling unit in Indiana requires a minimum of which grounding electrode
system component when available?
A. Metal underground water pipe
B. Concrete-encased electrode
C. Rod, pipe, or plate electrode only
D. Equipment grounding conductor only
Correct: B ✓ [Concrete-encased electrode]
Rationale: A concrete-encased electrode is required when present as part of the
grounding electrode system under NEC rules commonly adopted in Indiana.
2. In residential branch circuits, what is the maximum load permitted on a 15-
amp general lighting circuit?
A. 12 amps continuous
B. 15 amps total continuous
C. 80% of rated capacity for continuous load
D. No limit if breaker is oversized
Correct: C ✓ [80% of rated capacity for continuous load]
Rationale: Continuous loads must not exceed 80% of circuit rating to prevent
overheating and ensure safe operation.
3. A GFCI device primarily protects against which hazard?
A. Overcurrent
B. Short circuit
, C. Ground-fault shock hazard
D. Voltage drop
Correct: C ✓ [Ground-fault shock hazard]
Rationale: GFCIs detect imbalance between hot and neutral conductors,
protecting against electric shock from ground faults.
4. When is a permit generally required for electrical work in Indiana?
A. Only for commercial work
B. Only for new construction
C. For most installations, modifications, or extensions
D. Never for single-family dwellings
Correct: C ✓ [For most installations, modifications, or extensions]
Rationale: Electrical permits are required for most electrical work unless
specifically exempted by local authority.
5. A 240-volt water heater draws 18 amps. What is the minimum circuit
ampacity?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
Correct: B ✓ [20 amps]
Rationale: Conductors must be sized at or above load; 18 amps requires next
standard size 20-amp circuit.
6. What is the minimum burial depth for a residential PVC conduit under a
120V branch circuit in a yard?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
, Correct: C ✓ [18 inches]
Rationale: NEC Table 300.5 requires 18 inches for PVC direct burial residential
branch circuits under typical conditions.
7. Which device is required in bathrooms for receptacle outlets?
A. AFCI only
B. GFCI protection
C. Surge protection
D. Isolation transformer
Correct: B ✓ [GFCI protection]
Rationale: Bathrooms require GFCI protection due to high risk of electric shock
from moisture exposure.
8. A conductor is rated for 75°C. What is the correct rule when sizing
terminations?
A. Use 60°C ampacity only
B. Use 75°C ampacity if equipment is rated
C. Always use 90°C ampacity
D. Ignore temperature rating
Correct: B ✓ [Use 75°C ampacity if equipment is rated]
Rationale: Conductor ampacity must match terminal temperature rating; 75°C
terminals allow 75°C column usage.
9. What is the purpose of an AFCI breaker?
A. Prevent overloads
B. Detect arc faults
C. Limit voltage rise
D. Increase circuit capacity
Correct: B ✓ [Detect arc faults]
Rationale: AFCIs protect against fire hazards caused by arcing conditions in
wiring.
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. A dwelling unit in Indiana requires a minimum of which grounding electrode
system component when available?
A. Metal underground water pipe
B. Concrete-encased electrode
C. Rod, pipe, or plate electrode only
D. Equipment grounding conductor only
Correct: B ✓ [Concrete-encased electrode]
Rationale: A concrete-encased electrode is required when present as part of the
grounding electrode system under NEC rules commonly adopted in Indiana.
2. In residential branch circuits, what is the maximum load permitted on a 15-
amp general lighting circuit?
A. 12 amps continuous
B. 15 amps total continuous
C. 80% of rated capacity for continuous load
D. No limit if breaker is oversized
Correct: C ✓ [80% of rated capacity for continuous load]
Rationale: Continuous loads must not exceed 80% of circuit rating to prevent
overheating and ensure safe operation.
3. A GFCI device primarily protects against which hazard?
A. Overcurrent
B. Short circuit
, C. Ground-fault shock hazard
D. Voltage drop
Correct: C ✓ [Ground-fault shock hazard]
Rationale: GFCIs detect imbalance between hot and neutral conductors,
protecting against electric shock from ground faults.
4. When is a permit generally required for electrical work in Indiana?
A. Only for commercial work
B. Only for new construction
C. For most installations, modifications, or extensions
D. Never for single-family dwellings
Correct: C ✓ [For most installations, modifications, or extensions]
Rationale: Electrical permits are required for most electrical work unless
specifically exempted by local authority.
5. A 240-volt water heater draws 18 amps. What is the minimum circuit
ampacity?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
Correct: B ✓ [20 amps]
Rationale: Conductors must be sized at or above load; 18 amps requires next
standard size 20-amp circuit.
6. What is the minimum burial depth for a residential PVC conduit under a
120V branch circuit in a yard?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
, Correct: C ✓ [18 inches]
Rationale: NEC Table 300.5 requires 18 inches for PVC direct burial residential
branch circuits under typical conditions.
7. Which device is required in bathrooms for receptacle outlets?
A. AFCI only
B. GFCI protection
C. Surge protection
D. Isolation transformer
Correct: B ✓ [GFCI protection]
Rationale: Bathrooms require GFCI protection due to high risk of electric shock
from moisture exposure.
8. A conductor is rated for 75°C. What is the correct rule when sizing
terminations?
A. Use 60°C ampacity only
B. Use 75°C ampacity if equipment is rated
C. Always use 90°C ampacity
D. Ignore temperature rating
Correct: B ✓ [Use 75°C ampacity if equipment is rated]
Rationale: Conductor ampacity must match terminal temperature rating; 75°C
terminals allow 75°C column usage.
9. What is the purpose of an AFCI breaker?
A. Prevent overloads
B. Detect arc faults
C. Limit voltage rise
D. Increase circuit capacity
Correct: B ✓ [Detect arc faults]
Rationale: AFCIs protect against fire hazards caused by arcing conditions in
wiring.
