Massachusetts Journeyman Electrician
(Class B) 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. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design specifications for appliances
B. To ensure electrical safety in installations
C. To regulate utility companies
D. To enforce labor laws
✔ Correct Answer: B (To ensure electrical safety in installations)
Explanation: The NEC is intended to safeguard people and property from
electrical hazards by establishing minimum safety standards.
2. What NEC article covers grounding and bonding?
A. Article 110
B. Article 250
C. Article 300
D. Article 430
✔ Correct Answer: B (Article 250)
Explanation: Article 250 provides comprehensive requirements for
grounding and bonding to ensure system safety and fault current paths.
3. A continuous load is defined as a load where the maximum current is
expected to continue for at least:
A. 1 hour
, B. 2 hours
C. 3 hours
D. 4 hours
✔ Correct Answer: C (3 hours)
Explanation: The NEC defines continuous loads as those expected to run for
3 hours or more, impacting conductor and overcurrent sizing.
4. What is the minimum working clearance in front of a 120/240V
panelboard?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
✔ Correct Answer: C (36 inches)
Explanation: NEC 110.26 requires a minimum of 36 inches of working
clearance for safe maintenance and operation.
5. What color is typically used for grounded (neutral) conductors?
A. Green
B. White
C. Red
D. Blue
✔ Correct Answer: B (White)
Explanation: White or gray insulation identifies grounded conductors per
NEC standards.
6. Equipment grounding conductors are typically:
A. White
B. Black
C. Green or bare
D. Red
✔ Correct Answer: C (Green or bare)
Explanation: Green or bare conductors are used for equipment grounding to
provide a safe fault path.
, 7. What is the ampacity of 12 AWG copper conductors under normal
conditions?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
✔ Correct Answer: B (20 amps)
Explanation: 12 AWG copper conductors are rated for 20 amps under
standard NEC conditions.
8. What NEC article covers branch circuits?
A. Article 100
B. Article 210
C. Article 220
D. Article 240
✔ Correct Answer: B (Article 210)
Explanation: Article 210 details requirements for branch circuits including
ratings and configurations.
9. GFCI protection is required in which location?
A. Bedrooms
B. Living rooms
C. Bathrooms
D. Hallways
✔ Correct Answer: C (Bathrooms)
Explanation: Bathrooms require GFCI protection due to increased shock risk
from moisture.
10.AFCI protection is primarily required for:
A. Outdoor circuits
B. Kitchen appliances
C. Dwelling unit living areas
D. Industrial equipment
✔ Correct Answer: C (Dwelling unit living areas)
(Class B) 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. What is the primary purpose of the National Electrical Code (NEC)?
A. To provide design specifications for appliances
B. To ensure electrical safety in installations
C. To regulate utility companies
D. To enforce labor laws
✔ Correct Answer: B (To ensure electrical safety in installations)
Explanation: The NEC is intended to safeguard people and property from
electrical hazards by establishing minimum safety standards.
2. What NEC article covers grounding and bonding?
A. Article 110
B. Article 250
C. Article 300
D. Article 430
✔ Correct Answer: B (Article 250)
Explanation: Article 250 provides comprehensive requirements for
grounding and bonding to ensure system safety and fault current paths.
3. A continuous load is defined as a load where the maximum current is
expected to continue for at least:
A. 1 hour
, B. 2 hours
C. 3 hours
D. 4 hours
✔ Correct Answer: C (3 hours)
Explanation: The NEC defines continuous loads as those expected to run for
3 hours or more, impacting conductor and overcurrent sizing.
4. What is the minimum working clearance in front of a 120/240V
panelboard?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
✔ Correct Answer: C (36 inches)
Explanation: NEC 110.26 requires a minimum of 36 inches of working
clearance for safe maintenance and operation.
5. What color is typically used for grounded (neutral) conductors?
A. Green
B. White
C. Red
D. Blue
✔ Correct Answer: B (White)
Explanation: White or gray insulation identifies grounded conductors per
NEC standards.
6. Equipment grounding conductors are typically:
A. White
B. Black
C. Green or bare
D. Red
✔ Correct Answer: C (Green or bare)
Explanation: Green or bare conductors are used for equipment grounding to
provide a safe fault path.
, 7. What is the ampacity of 12 AWG copper conductors under normal
conditions?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
✔ Correct Answer: B (20 amps)
Explanation: 12 AWG copper conductors are rated for 20 amps under
standard NEC conditions.
8. What NEC article covers branch circuits?
A. Article 100
B. Article 210
C. Article 220
D. Article 240
✔ Correct Answer: B (Article 210)
Explanation: Article 210 details requirements for branch circuits including
ratings and configurations.
9. GFCI protection is required in which location?
A. Bedrooms
B. Living rooms
C. Bathrooms
D. Hallways
✔ Correct Answer: C (Bathrooms)
Explanation: Bathrooms require GFCI protection due to increased shock risk
from moisture.
10.AFCI protection is primarily required for:
A. Outdoor circuits
B. Kitchen appliances
C. Dwelling unit living areas
D. Industrial equipment
✔ Correct Answer: C (Dwelling unit living areas)
