NORTH DAKOTA MASTER ELECTRICIAN
EXAMINATION COMPLETE QUESTIONS
AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR JUST RELEASED
Exam Coverage
1. General Electrical Theory and Principles
o Voltage, current, resistance, power calculations, and circuit characteristics.
2. National Electrical Code (NEC) Requirements
o Code interpretation, application, and compliance for electrical installations.
3. Branch Circuits and Feeders
o Sizing conductors, overcurrent protection, and load calculations.
4. Service Calculations and Service Equipment
o Residential, commercial, and industrial service sizing requirements.
5. Grounding and Bonding
o Grounding electrode systems, bonding methods, and fault-current paths.
6. Motors and Motor Controls
o Motor calculations, overload protection, controllers, and disconnecting means.
7. Transformers and Special Equipment
o Transformer sizing, overcurrent protection, and installation requirements.
8. Electrical Safety and OSHA Practices
o Lockout/tagout, PPE requirements, arc-flash awareness, and safe work practices.
9. Commercial and Industrial Installations
o Raceway systems, conductor ampacity, equipment installation, and special
occupancies.
10. Electrical Troubleshooting and System Design
Diagnosing faults, interpreting drawings, and designing code-compliant systems.
North Dakota Master Electrician Examination
1.
,When calculating the total current draw of a 12,000-watt
single-phase load supplied by 240 volts, which value is closest
to the correct load current?
A. 40 A
B. 50 A
C. 60 A
D. 70 A
Answer: B
Rationale: Current equals watts divided by volts. 12,000 ÷
240 = 50 amperes.
2.
Which NEC principle primarily requires electrical equipment
to be installed and used according to the manufacturer's
instructions and listing?
A. Equipment grounding
B. Product listing and labeling
C. Conductor derating
D. Voltage drop
Answer: B
Rationale: Listed equipment must be installed according to its
listing and labeling requirements.
3.
,When sizing branch-circuit conductors supplying a
continuous load, what minimum percentage of the continuous
load must generally be considered?
A. 100%
B. 110%
C. 125%
D. 150%
Answer: C
Rationale: Continuous loads are generally calculated at 125%
for conductor sizing.
4.
What is the primary purpose of bonding metal raceways and
enclosures within an electrical system?
A. Increase voltage output
B. Reduce power factor losses
C. Provide an effective fault-current path
D. Reduce conductor resistance
Answer: C
Rationale: Bonding ensures fault current has a low-impedance
path for protective device operation.
5.
, A feeder supplies a load requiring 160 amperes continuously.
What minimum conductor ampacity must generally be
provided?
A. 160 A
B. 180 A
C. 200 A
D. 220 A
Answer: C
Rationale: 160 × 125% = 200 amperes minimum ampacity.
6.
Which type of motor protection is primarily intended to
prevent overheating caused by excessive motor current over
time?
A. Ground-fault protection
B. Overload protection
C. Surge protection
D. Bonding jumper protection
Answer: B
Rationale: Overload devices protect motors from overheating
due to excessive current.
7.
EXAMINATION COMPLETE QUESTIONS
AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR JUST RELEASED
Exam Coverage
1. General Electrical Theory and Principles
o Voltage, current, resistance, power calculations, and circuit characteristics.
2. National Electrical Code (NEC) Requirements
o Code interpretation, application, and compliance for electrical installations.
3. Branch Circuits and Feeders
o Sizing conductors, overcurrent protection, and load calculations.
4. Service Calculations and Service Equipment
o Residential, commercial, and industrial service sizing requirements.
5. Grounding and Bonding
o Grounding electrode systems, bonding methods, and fault-current paths.
6. Motors and Motor Controls
o Motor calculations, overload protection, controllers, and disconnecting means.
7. Transformers and Special Equipment
o Transformer sizing, overcurrent protection, and installation requirements.
8. Electrical Safety and OSHA Practices
o Lockout/tagout, PPE requirements, arc-flash awareness, and safe work practices.
9. Commercial and Industrial Installations
o Raceway systems, conductor ampacity, equipment installation, and special
occupancies.
10. Electrical Troubleshooting and System Design
Diagnosing faults, interpreting drawings, and designing code-compliant systems.
North Dakota Master Electrician Examination
1.
,When calculating the total current draw of a 12,000-watt
single-phase load supplied by 240 volts, which value is closest
to the correct load current?
A. 40 A
B. 50 A
C. 60 A
D. 70 A
Answer: B
Rationale: Current equals watts divided by volts. 12,000 ÷
240 = 50 amperes.
2.
Which NEC principle primarily requires electrical equipment
to be installed and used according to the manufacturer's
instructions and listing?
A. Equipment grounding
B. Product listing and labeling
C. Conductor derating
D. Voltage drop
Answer: B
Rationale: Listed equipment must be installed according to its
listing and labeling requirements.
3.
,When sizing branch-circuit conductors supplying a
continuous load, what minimum percentage of the continuous
load must generally be considered?
A. 100%
B. 110%
C. 125%
D. 150%
Answer: C
Rationale: Continuous loads are generally calculated at 125%
for conductor sizing.
4.
What is the primary purpose of bonding metal raceways and
enclosures within an electrical system?
A. Increase voltage output
B. Reduce power factor losses
C. Provide an effective fault-current path
D. Reduce conductor resistance
Answer: C
Rationale: Bonding ensures fault current has a low-impedance
path for protective device operation.
5.
, A feeder supplies a load requiring 160 amperes continuously.
What minimum conductor ampacity must generally be
provided?
A. 160 A
B. 180 A
C. 200 A
D. 220 A
Answer: C
Rationale: 160 × 125% = 200 amperes minimum ampacity.
6.
Which type of motor protection is primarily intended to
prevent overheating caused by excessive motor current over
time?
A. Ground-fault protection
B. Overload protection
C. Surge protection
D. Bonding jumper protection
Answer: B
Rationale: Overload devices protect motors from overheating
due to excessive current.
7.
