NORTH DAKOTA MASTER ELECTRICIAN
EXAMINATION COMPLETE QUESTIONS
AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR JUST RELEASED
Exam Coverage
1. National Electrical Code (NEC) General Requirements and Definitions
2. Branch Circuits, Feeders, and Service Calculations
3. Grounding and Bonding Requirements
4. Overcurrent Protection and Equipment Ratings
5. Wiring Methods and Materials
6. Motors, Motor Controls, and Industrial Installations
7. Transformers and Electrical Calculations
8. Special Occupancies, Equipment, and Conditions
9. Electrical Safety, OSHA Practices, and Troubleshooting
10.North Dakota Electrical Licensing Laws, Rules, and Inspection
Requirements
1.
Which NEC requirement determines the minimum number of
required small-appliance branch circuits serving kitchen
countertop receptacle outlets in a dwelling unit?
,A. One 20-ampere circuit only
B. Two or more 20-ampere circuits
C. Three 15-ampere circuits
D. One 30-ampere circuit
Answer: B
Rationale: NEC requires at least two 20-ampere small-
appliance branch circuits for kitchen countertop receptacles.
2.
When calculating the continuous electrical load for sizing
branch-circuit conductors, what percentage of the continuous
load must generally be used according to NEC requirements?
A. 100%
B. 110%
C. 125%
D. 150%
Answer: C
Rationale: Continuous loads are calculated at 125% for
conductor and overcurrent protection sizing.
3.
Which grounding electrode conductor size is required when a
service is supplied by 3/0 AWG copper service-entrance
conductors and connected to a metal water pipe electrode?
,A. 8 AWG copper
B. 6 AWG copper
C. 4 AWG copper
D. 2 AWG copper
Answer: C
Rationale: NEC Table 250.66 specifies a 4 AWG copper
grounding electrode conductor for 3/0 copper service
conductors.
4.
What is the primary purpose of bonding normally non-
current-carrying metal parts of electrical equipment
throughout an installation?
A. Increase system voltage
B. Reduce conductor resistance
C. Establish effective fault-current path
D. Increase power factor
Answer: C
Rationale: Bonding creates a low-impedance path that
facilitates operation of overcurrent devices during faults.
5.
, According to NEC requirements, receptacle outlets installed
in residential bathroom areas must be supplied by what
minimum branch-circuit rating?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
Answer: B
Rationale: Bathroom receptacles require at least one 20-
ampere branch circuit.
6.
When determining conductor ampacity correction factors,
what condition requires adjustment of conductor ampacity
beyond standard table values?
A. White insulation only
B. Copper conductors only
C. Ambient temperature differences
D. Single receptacle installation
Answer: C
Rationale: Ampacity must be adjusted when ambient
temperature exceeds standard conditions.
7.
EXAMINATION COMPLETE QUESTIONS
AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR JUST RELEASED
Exam Coverage
1. National Electrical Code (NEC) General Requirements and Definitions
2. Branch Circuits, Feeders, and Service Calculations
3. Grounding and Bonding Requirements
4. Overcurrent Protection and Equipment Ratings
5. Wiring Methods and Materials
6. Motors, Motor Controls, and Industrial Installations
7. Transformers and Electrical Calculations
8. Special Occupancies, Equipment, and Conditions
9. Electrical Safety, OSHA Practices, and Troubleshooting
10.North Dakota Electrical Licensing Laws, Rules, and Inspection
Requirements
1.
Which NEC requirement determines the minimum number of
required small-appliance branch circuits serving kitchen
countertop receptacle outlets in a dwelling unit?
,A. One 20-ampere circuit only
B. Two or more 20-ampere circuits
C. Three 15-ampere circuits
D. One 30-ampere circuit
Answer: B
Rationale: NEC requires at least two 20-ampere small-
appliance branch circuits for kitchen countertop receptacles.
2.
When calculating the continuous electrical load for sizing
branch-circuit conductors, what percentage of the continuous
load must generally be used according to NEC requirements?
A. 100%
B. 110%
C. 125%
D. 150%
Answer: C
Rationale: Continuous loads are calculated at 125% for
conductor and overcurrent protection sizing.
3.
Which grounding electrode conductor size is required when a
service is supplied by 3/0 AWG copper service-entrance
conductors and connected to a metal water pipe electrode?
,A. 8 AWG copper
B. 6 AWG copper
C. 4 AWG copper
D. 2 AWG copper
Answer: C
Rationale: NEC Table 250.66 specifies a 4 AWG copper
grounding electrode conductor for 3/0 copper service
conductors.
4.
What is the primary purpose of bonding normally non-
current-carrying metal parts of electrical equipment
throughout an installation?
A. Increase system voltage
B. Reduce conductor resistance
C. Establish effective fault-current path
D. Increase power factor
Answer: C
Rationale: Bonding creates a low-impedance path that
facilitates operation of overcurrent devices during faults.
5.
, According to NEC requirements, receptacle outlets installed
in residential bathroom areas must be supplied by what
minimum branch-circuit rating?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
Answer: B
Rationale: Bathroom receptacles require at least one 20-
ampere branch circuit.
6.
When determining conductor ampacity correction factors,
what condition requires adjustment of conductor ampacity
beyond standard table values?
A. White insulation only
B. Copper conductors only
C. Ambient temperature differences
D. Single receptacle installation
Answer: C
Rationale: Ampacity must be adjusted when ambient
temperature exceeds standard conditions.
7.
