TENNESSEE CE ELECTRICAL CONTRACTOR EXAM
Newest (2026 Update) Actual Practice Questions –
Set 100 Most Common Exam Questions And
Answers In Details 100% Verified Exam Highly
Recommendable For Grade A+
1. A dwelling unit branch circuit supplying kitchen countertop receptacles
must be protected by which type of GFCI protection requirement under NEC
standards?
A. Only at the panelboard
B. Only at the first outlet
C. At all receptacles serving countertops ✔ C ✔
D. GFCI is not required in kitchens
*✔ Correct Answer: C
*Rationale: All kitchen countertop receptacles must have GFCI protection
as required by NEC for safety in wet and high-risk kitchen environments.
2. The minimum clearance required in front of electrical equipment rated
1200A and 120V to ground with exposed live parts is typically:
A. 2 feet
B. 3 feet
C. 3.5 feet
D. 4 feet ✔ D ✔
*✔ Correct Answer: D
*Rationale: NEC working clearance requirements mandate 4 feet for
1200A equipment with exposed live parts.
3. What is the maximum voltage drop recommended for branch circuits for
efficient performance?
A. 1%
B. 3% ✔ B ✔
, C. 5%
D. 10%
*✔ Correct Answer: B
*Rationale: NEC informational notes recommend a maximum of 3%
voltage drop on branch circuits.
4. A 20A, 120V general-purpose branch circuit requires minimum conductor
size of:
A. 14 AWG
B. 12 AWG ✔ B ✔
C. 10 AWG
D. 8 AWG
*✔ Correct Answer: B
*Rationale: 12 AWG copper is standard minimum for 20A circuits per NEC
ampacity tables.
5. Which device is required for all outdoor receptacles in dwelling units?
A. AFCI only
B. GFCI protection ✔ B ✔
C. Surge protector
D. Time delay fuse
*✔ Correct Answer: B
*Rationale: Outdoor receptacles require GFCI protection due to exposure
to moisture.
6. A conduit run contains 4 current-carrying conductors. The adjustment factor
applied is:
A. 80%
B. 70%
C. 60% ✔ C ✔
D. 50%
*✔ Correct Answer: C
, *Rationale: NEC adjustment factors reduce ampacity for more than 3
conductors.
7. The purpose of an equipment grounding conductor is to:
A. Carry normal load current
B. Provide return path for neutrals
C. Facilitate fault current path ✔ C ✔
D. Increase voltage stability
*✔ Correct Answer: C
*Rationale: EGC provides a low-impedance path for fault current to clear
overcurrent devices.
8. Minimum burial depth for residential branch circuits in PVC conduit is
typically:
A. 6 inches
B. 12 inches
C. 18 inches ✔ C ✔
D. 36 inches
*✔ Correct Answer: C
*Rationale: Direct burial PVC conduit requires 18 inches minimum for
residential circuits.
9. A 240V, 30A load requires a minimum conductor size of:
A. 14 AWG
B. 12 AWG
C. 10 AWG ✔ C ✔
D. 8 AWG
*✔ Correct Answer: C
*Rationale: 10 AWG copper is rated for 30A circuits under NEC tables.
10.Which part of the NEC governs grounding and bonding?
A. Article 210
B. Article 250 ✔ B ✔
C. Article 300
Newest (2026 Update) Actual Practice Questions –
Set 100 Most Common Exam Questions And
Answers In Details 100% Verified Exam Highly
Recommendable For Grade A+
1. A dwelling unit branch circuit supplying kitchen countertop receptacles
must be protected by which type of GFCI protection requirement under NEC
standards?
A. Only at the panelboard
B. Only at the first outlet
C. At all receptacles serving countertops ✔ C ✔
D. GFCI is not required in kitchens
*✔ Correct Answer: C
*Rationale: All kitchen countertop receptacles must have GFCI protection
as required by NEC for safety in wet and high-risk kitchen environments.
2. The minimum clearance required in front of electrical equipment rated
1200A and 120V to ground with exposed live parts is typically:
A. 2 feet
B. 3 feet
C. 3.5 feet
D. 4 feet ✔ D ✔
*✔ Correct Answer: D
*Rationale: NEC working clearance requirements mandate 4 feet for
1200A equipment with exposed live parts.
3. What is the maximum voltage drop recommended for branch circuits for
efficient performance?
A. 1%
B. 3% ✔ B ✔
, C. 5%
D. 10%
*✔ Correct Answer: B
*Rationale: NEC informational notes recommend a maximum of 3%
voltage drop on branch circuits.
4. A 20A, 120V general-purpose branch circuit requires minimum conductor
size of:
A. 14 AWG
B. 12 AWG ✔ B ✔
C. 10 AWG
D. 8 AWG
*✔ Correct Answer: B
*Rationale: 12 AWG copper is standard minimum for 20A circuits per NEC
ampacity tables.
5. Which device is required for all outdoor receptacles in dwelling units?
A. AFCI only
B. GFCI protection ✔ B ✔
C. Surge protector
D. Time delay fuse
*✔ Correct Answer: B
*Rationale: Outdoor receptacles require GFCI protection due to exposure
to moisture.
6. A conduit run contains 4 current-carrying conductors. The adjustment factor
applied is:
A. 80%
B. 70%
C. 60% ✔ C ✔
D. 50%
*✔ Correct Answer: C
, *Rationale: NEC adjustment factors reduce ampacity for more than 3
conductors.
7. The purpose of an equipment grounding conductor is to:
A. Carry normal load current
B. Provide return path for neutrals
C. Facilitate fault current path ✔ C ✔
D. Increase voltage stability
*✔ Correct Answer: C
*Rationale: EGC provides a low-impedance path for fault current to clear
overcurrent devices.
8. Minimum burial depth for residential branch circuits in PVC conduit is
typically:
A. 6 inches
B. 12 inches
C. 18 inches ✔ C ✔
D. 36 inches
*✔ Correct Answer: C
*Rationale: Direct burial PVC conduit requires 18 inches minimum for
residential circuits.
9. A 240V, 30A load requires a minimum conductor size of:
A. 14 AWG
B. 12 AWG
C. 10 AWG ✔ C ✔
D. 8 AWG
*✔ Correct Answer: C
*Rationale: 10 AWG copper is rated for 30A circuits under NEC tables.
10.Which part of the NEC governs grounding and bonding?
A. Article 210
B. Article 250 ✔ B ✔
C. Article 300
