Connecticut E-1 Unlimited Electrical Contractor
Exam Practice Test Newest (2026 Update)
Actual Practice Questions – Set 100 Most
Common Exam Questions And Answers In
Details 100% Verified Exam
1. A branch circuit supplying continuous load must have conductors sized to at
least what percentage of the load?
A. 100%
B. 115%
C. 125%
D. 150%
✔ Correct Answer: C (125%)
Explanation: Continuous loads must be calculated at 125% per NEC
requirements to prevent overheating.
2. What is the minimum cover depth for direct-buried residential branch
circuits rated 120 volts or less with GFCI protection?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ Correct Answer: B (12 inches)
Explanation: NEC allows reduced burial depth of 12 inches for GFCI-
protected circuits under specific conditions.
3. In a dwelling unit, what is the minimum number of 20-amp small appliance
branch circuits required?
A. One
, B. Two
C. Three
D. Four
✔ Correct Answer: B (Two)
Explanation: NEC requires at least two 20-amp circuits for kitchen and
dining small appliance loads.
4. What is the maximum number of disconnects allowed for a service?
A. 2
B. 4
C. 6
D. 8
✔ Correct Answer: C (6)
Explanation: The “six disconnect rule” allows up to six service disconnects
grouped in one location.
5. A grounding electrode conductor connected to a rod electrode must be at
least:
A. 10 AWG copper
B. 8 AWG copper
C. 6 AWG copper
D. 4 AWG copper
✔ Correct Answer: C (6 AWG copper)
Explanation: NEC specifies minimum 6 AWG copper for grounding
electrode conductors to rod electrodes.
6. What type of protection is required for receptacles in bathrooms?
A. AFCI only
B. GFCI only
C. Both AFCI and GFCI
D. No protection
✔ Correct Answer: C (Both AFCI and GFCI)
Explanation: Bathrooms require both GFCI and AFCI protection per
updated NEC standards.
, 7. What is the maximum allowable voltage drop for feeders and branch
circuits combined?
A. 2%
B. 3%
C. 5%
D. 7%
✔ Correct Answer: C (5%)
Explanation: NEC recommends a maximum of 5% total voltage drop for
efficiency.
8. What is the minimum working space depth for equipment operating at
120–250 volts?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ Correct Answer: B (3 feet)
Explanation: NEC requires 3 feet clearance for safe servicing of equipment.
9. Which conductor is typically identified by white or gray insulation?
A. Equipment grounding conductor
B. Ungrounded conductor
C. Grounded conductor
D. Bonding jumper
✔ Correct Answer: C (Grounded conductor)
Explanation: White or gray identifies the neutral (grounded conductor).
10.Conduit fill is primarily limited to prevent:
A. Voltage drop
B. Overheating
C. Mechanical damage
D. Corrosion
✔ Correct Answer: B (Overheating)
Explanation: Excessive fill restricts heat dissipation, causing overheating.
Exam Practice Test Newest (2026 Update)
Actual Practice Questions – Set 100 Most
Common Exam Questions And Answers In
Details 100% Verified Exam
1. A branch circuit supplying continuous load must have conductors sized to at
least what percentage of the load?
A. 100%
B. 115%
C. 125%
D. 150%
✔ Correct Answer: C (125%)
Explanation: Continuous loads must be calculated at 125% per NEC
requirements to prevent overheating.
2. What is the minimum cover depth for direct-buried residential branch
circuits rated 120 volts or less with GFCI protection?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ Correct Answer: B (12 inches)
Explanation: NEC allows reduced burial depth of 12 inches for GFCI-
protected circuits under specific conditions.
3. In a dwelling unit, what is the minimum number of 20-amp small appliance
branch circuits required?
A. One
, B. Two
C. Three
D. Four
✔ Correct Answer: B (Two)
Explanation: NEC requires at least two 20-amp circuits for kitchen and
dining small appliance loads.
4. What is the maximum number of disconnects allowed for a service?
A. 2
B. 4
C. 6
D. 8
✔ Correct Answer: C (6)
Explanation: The “six disconnect rule” allows up to six service disconnects
grouped in one location.
5. A grounding electrode conductor connected to a rod electrode must be at
least:
A. 10 AWG copper
B. 8 AWG copper
C. 6 AWG copper
D. 4 AWG copper
✔ Correct Answer: C (6 AWG copper)
Explanation: NEC specifies minimum 6 AWG copper for grounding
electrode conductors to rod electrodes.
6. What type of protection is required for receptacles in bathrooms?
A. AFCI only
B. GFCI only
C. Both AFCI and GFCI
D. No protection
✔ Correct Answer: C (Both AFCI and GFCI)
Explanation: Bathrooms require both GFCI and AFCI protection per
updated NEC standards.
, 7. What is the maximum allowable voltage drop for feeders and branch
circuits combined?
A. 2%
B. 3%
C. 5%
D. 7%
✔ Correct Answer: C (5%)
Explanation: NEC recommends a maximum of 5% total voltage drop for
efficiency.
8. What is the minimum working space depth for equipment operating at
120–250 volts?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ Correct Answer: B (3 feet)
Explanation: NEC requires 3 feet clearance for safe servicing of equipment.
9. Which conductor is typically identified by white or gray insulation?
A. Equipment grounding conductor
B. Ungrounded conductor
C. Grounded conductor
D. Bonding jumper
✔ Correct Answer: C (Grounded conductor)
Explanation: White or gray identifies the neutral (grounded conductor).
10.Conduit fill is primarily limited to prevent:
A. Voltage drop
B. Overheating
C. Mechanical damage
D. Corrosion
✔ Correct Answer: B (Overheating)
Explanation: Excessive fill restricts heat dissipation, causing overheating.
