Master Electrician's Licensing Exam Review Questions and
100% Correct Answers Graded A+ 2025/2026
1. NEC Article defines breaḳers and fuses.: According to NEC Article 100, a device that opens
and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent.
2. Annex of NEC covers conduit fill.: Annex C of NEC covers conduit and tubing fill for conductors and
fixture wire fill.
3. NEMA stands for National Electrical Manufacturers Association: True - NEMA is the
acronym for National Electrical Manufacturers Association.
4. What does it mean when a receptacle has "NEMA 5-20R" on it?: A receptacle with NEMA 5-
20R on it has an amperes rating of 20, will taḳe a NEMA-5-15P or NEMA-5-20P plug, and has a voltage rating of 125.
5. NEC Tables 310-10 through 310-21 provide information on.: The sizes of copper and
aluminum wire, as well as the coating of wire that has fewer than three current carrying wires in a cable or conduit or that is buried
the earth.
6. Which NEC tables(s) cover(s) the fill of metal boxes?: The fill of metal boxes appears in NEC
Tables 314.6 A and B.
7. NEC Article address EMT.: NEC Article 358 covers EMT.
,8. Which NEC articles cover the installation requirements for RMC, IMC, and EMT?:
NEC Articles 342, 344, and 358 outline the installation requirements of RMC, IMC, and EMT.
9. IN NEC 2008, what does Table 370.6A cover?: Shows in two columns (milimeters and inches), how many
wires in trade size you can place in a box.
10. What NEC table would you go to to find trade size of conduit and raceway size?:
Chapter 9, Table 4 outlines trade size of conduit as well as raceway size.
11. NEC Articles and covers metallic and non-metallic raceways in
buildings.: NEC Article 386 covers metallic or metal raceway; NEC Article 388 covers PVC pipe.
12. The Panel Board requirements for Application in Construction appear in NEC Article?:
NEC Article 408 covers panel board applications.
13. The smaller ḳitchen counter requiring a receptacle is inches.: A 12in. counter
requires a receptacle because it holds small appliances.
14. What new code is needed for protection in all habitable spaces?: According to new codes,
ARC fault protection is needed many additional parts of the house.
15. A 12-foot hallway requires one receptacle to meet code. (True or False): True, One is
required, Two are suggested.
,16. NEC Article 100 is dedicated to?: Definitions
, 17. The main ground on a service is a(n) .: Ground Rod
18. What does NEC Section 250-28A require?: A main bonding jumper and a system bonding jumper.
19. NEC section 250-28A provides information on what material can be used for a
main bonding jumper. (True or False): True
20. A bonding screw is what color?: A bonding screw is green.
21. A subpanel requires a bonding screw? (True or False): False, A bonding screw is
unneeded in a subpanel.
22. Name the methods of sizing bonding jumpers outlined in NEC Section 250-
28D.: 1. Bonding jumper is sized not less than 12.5% of the largest phase conductor.
2. Based on the largest ungrounded service conductor.
3. Based on the largest sum of the service conductors.
23. NEC Table covers grounding electrode conductor sizing.: NEC Table 250.66
24. Which NEC reference identifies wire sizing and the temperature a wire can handle in
amps?: NEC Tables Annex C1 and C2 identify both wire sizing and the temperature a wire can handle in amps.
25. Define a grounding system according to NEC.: A gounding system is connected to the ground
100% Correct Answers Graded A+ 2025/2026
1. NEC Article defines breaḳers and fuses.: According to NEC Article 100, a device that opens
and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent.
2. Annex of NEC covers conduit fill.: Annex C of NEC covers conduit and tubing fill for conductors and
fixture wire fill.
3. NEMA stands for National Electrical Manufacturers Association: True - NEMA is the
acronym for National Electrical Manufacturers Association.
4. What does it mean when a receptacle has "NEMA 5-20R" on it?: A receptacle with NEMA 5-
20R on it has an amperes rating of 20, will taḳe a NEMA-5-15P or NEMA-5-20P plug, and has a voltage rating of 125.
5. NEC Tables 310-10 through 310-21 provide information on.: The sizes of copper and
aluminum wire, as well as the coating of wire that has fewer than three current carrying wires in a cable or conduit or that is buried
the earth.
6. Which NEC tables(s) cover(s) the fill of metal boxes?: The fill of metal boxes appears in NEC
Tables 314.6 A and B.
7. NEC Article address EMT.: NEC Article 358 covers EMT.
,8. Which NEC articles cover the installation requirements for RMC, IMC, and EMT?:
NEC Articles 342, 344, and 358 outline the installation requirements of RMC, IMC, and EMT.
9. IN NEC 2008, what does Table 370.6A cover?: Shows in two columns (milimeters and inches), how many
wires in trade size you can place in a box.
10. What NEC table would you go to to find trade size of conduit and raceway size?:
Chapter 9, Table 4 outlines trade size of conduit as well as raceway size.
11. NEC Articles and covers metallic and non-metallic raceways in
buildings.: NEC Article 386 covers metallic or metal raceway; NEC Article 388 covers PVC pipe.
12. The Panel Board requirements for Application in Construction appear in NEC Article?:
NEC Article 408 covers panel board applications.
13. The smaller ḳitchen counter requiring a receptacle is inches.: A 12in. counter
requires a receptacle because it holds small appliances.
14. What new code is needed for protection in all habitable spaces?: According to new codes,
ARC fault protection is needed many additional parts of the house.
15. A 12-foot hallway requires one receptacle to meet code. (True or False): True, One is
required, Two are suggested.
,16. NEC Article 100 is dedicated to?: Definitions
, 17. The main ground on a service is a(n) .: Ground Rod
18. What does NEC Section 250-28A require?: A main bonding jumper and a system bonding jumper.
19. NEC section 250-28A provides information on what material can be used for a
main bonding jumper. (True or False): True
20. A bonding screw is what color?: A bonding screw is green.
21. A subpanel requires a bonding screw? (True or False): False, A bonding screw is
unneeded in a subpanel.
22. Name the methods of sizing bonding jumpers outlined in NEC Section 250-
28D.: 1. Bonding jumper is sized not less than 12.5% of the largest phase conductor.
2. Based on the largest ungrounded service conductor.
3. Based on the largest sum of the service conductors.
23. NEC Table covers grounding electrode conductor sizing.: NEC Table 250.66
24. Which NEC reference identifies wire sizing and the temperature a wire can handle in
amps?: NEC Tables Annex C1 and C2 identify both wire sizing and the temperature a wire can handle in amps.
25. Define a grounding system according to NEC.: A gounding system is connected to the ground
