WYOMING MASTER ELECTRICIAN EXAMINATION | LATEST VERIFIED QUESTIONS AND
DETAILED ANSWERS – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS
| PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
CORE DOMAINS
General Electrical Theory and Fundamentals
National Electrical Code Requirements
Branch Circuits and Feeders
Grounding and Bonding
Overcurrent Protection
Motors, Generators, and Transformers
Special Occupancies and Hazardous Locations
Wiring Methods and Equipment
Load Calculations and Professional Judgment
INTRODUCTION
The Wyoming Master Electrician Examination assesses the knowledge, skills, and professional
judgment required to perform as a licensed master electrician in the State of Wyoming. The
examination evaluates competency in electrical theory, National Electrical Code application,
load calculations, grounding and bonding, overcurrent protection, motors and transformers,
wiring methods, and special occupancies. Questions are presented in multiple-choice and
scenario-based formats to test both direct knowledge and real-world application. Successful
performance requires not only code familiarity but also the analytical and decision-making
abilities essential for safe, compliant, and ethical electrical work. This assessment emphasizes
practical problem-solving and the professional responsibility inherent in master electrician
practice.
SECTION ONE – QUESTIONS 1–100
Question 1
What is the fundamental relationship described by Ohm's Law?
A. Voltage equals current multiplied by resistance
B. Power equals voltage multiplied by current
,C. Current equals voltage multiplied by resistance
D. Resistance equals voltage multiplied by current
🟢 A. Voltage equals current multiplied by resistance
🔴 Explanation: Ohm's Law states that voltage (V) equals current (I) multiplied by resistance
(R), expressed as V = I × R. This relationship is the foundation for analyzing electrical circuits.
Question 2
Which NEC Article contains the definitions used throughout the Code?
A. Article 100
B. Article 110
C. Article 200
D. Article 250
🟢 A. Article 100
🔴 Explanation: Article 100 contains the definitions of terms used throughout the National
Electrical Code. Understanding these definitions is essential for correct Code application.
Question 3
A continuous load is defined as a load where the maximum current is expected to continue for
what minimum duration?
A. One hour or more
B. Two hours or more
C. Three hours or more
D. Four hours or more
🟢 C. Three hours or more
🔴 Explanation: NEC Article 100 defines a continuous load as a load where the maximum
current is expected to continue for three hours or more. Conductors and overcurrent devices
for continuous loads must be sized at 125% of the load.
Question 4
,A 20-ampere branch circuit supplies a continuous lighting load. What is the maximum
continuous load permitted on this circuit?
A. 12 amperes
B. 16 amperes
C. 18 amperes
D. 20 amperes
🟢 B. 16 amperes
🔴 Explanation: Continuous loads must not exceed 80% of the overcurrent device rating. For a
20-ampere circuit, the maximum continuous load is 20 × 0.80 = 16 amperes.
Question 5
In a dwelling unit, receptacle outlets must be installed so that no point along the floor line in
any wall space is more than what distance from a receptacle?
A. 4 feet
B. 6 feet
C. 8 feet
D. 12 feet
🟢 B. 6 feet
🔴 Explanation: NEC 210.52(A)(1) requires receptacle outlets in dwelling units so that no point
measured horizontally along the floor line in any wall space is more than 6 feet from a
receptacle outlet.
Question 6
What is the minimum size copper conductor permitted for a 20-ampere branch circuit?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
🟢 B. 12 AWG
, 🔴 Explanation: NEC 240.4(D) requires a minimum of 12 AWG copper for a 20-ampere branch
circuit. The 14 AWG copper conductor is limited to 15-ampere circuits.
Question 7
Which of the following describes the function of an equipment grounding conductor?
A. Carries normal return current
B. Provides a low-impedance path for fault current
C. Balances voltage between phases
D. Reduces resistance in the circuit
🟢 B. Provides a low-impedance path for fault current
🔴 Explanation: The equipment grounding conductor provides a low-impedance path for fault
current to return to the source, facilitating operation of overcurrent protective devices and
protecting personnel from electric shock.
Question 8
What is the maximum number of service disconnecting means permitted for a single service?
A. One
B. Four
C. Six
D. Unlimited
🟢 C. Six
🔴 Explanation: NEC 230.71 permits a maximum of six service disconnecting means for each
service. This is commonly known as the "six-disconnect rule."
Question 9
A 240-volt, 30-ampere circuit supplies a water heater. What is the minimum size copper
equipment grounding conductor required?
A. 14 AWG
B. 12 AWG
DETAILED ANSWERS – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS
| PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
CORE DOMAINS
General Electrical Theory and Fundamentals
National Electrical Code Requirements
Branch Circuits and Feeders
Grounding and Bonding
Overcurrent Protection
Motors, Generators, and Transformers
Special Occupancies and Hazardous Locations
Wiring Methods and Equipment
Load Calculations and Professional Judgment
INTRODUCTION
The Wyoming Master Electrician Examination assesses the knowledge, skills, and professional
judgment required to perform as a licensed master electrician in the State of Wyoming. The
examination evaluates competency in electrical theory, National Electrical Code application,
load calculations, grounding and bonding, overcurrent protection, motors and transformers,
wiring methods, and special occupancies. Questions are presented in multiple-choice and
scenario-based formats to test both direct knowledge and real-world application. Successful
performance requires not only code familiarity but also the analytical and decision-making
abilities essential for safe, compliant, and ethical electrical work. This assessment emphasizes
practical problem-solving and the professional responsibility inherent in master electrician
practice.
SECTION ONE – QUESTIONS 1–100
Question 1
What is the fundamental relationship described by Ohm's Law?
A. Voltage equals current multiplied by resistance
B. Power equals voltage multiplied by current
,C. Current equals voltage multiplied by resistance
D. Resistance equals voltage multiplied by current
🟢 A. Voltage equals current multiplied by resistance
🔴 Explanation: Ohm's Law states that voltage (V) equals current (I) multiplied by resistance
(R), expressed as V = I × R. This relationship is the foundation for analyzing electrical circuits.
Question 2
Which NEC Article contains the definitions used throughout the Code?
A. Article 100
B. Article 110
C. Article 200
D. Article 250
🟢 A. Article 100
🔴 Explanation: Article 100 contains the definitions of terms used throughout the National
Electrical Code. Understanding these definitions is essential for correct Code application.
Question 3
A continuous load is defined as a load where the maximum current is expected to continue for
what minimum duration?
A. One hour or more
B. Two hours or more
C. Three hours or more
D. Four hours or more
🟢 C. Three hours or more
🔴 Explanation: NEC Article 100 defines a continuous load as a load where the maximum
current is expected to continue for three hours or more. Conductors and overcurrent devices
for continuous loads must be sized at 125% of the load.
Question 4
,A 20-ampere branch circuit supplies a continuous lighting load. What is the maximum
continuous load permitted on this circuit?
A. 12 amperes
B. 16 amperes
C. 18 amperes
D. 20 amperes
🟢 B. 16 amperes
🔴 Explanation: Continuous loads must not exceed 80% of the overcurrent device rating. For a
20-ampere circuit, the maximum continuous load is 20 × 0.80 = 16 amperes.
Question 5
In a dwelling unit, receptacle outlets must be installed so that no point along the floor line in
any wall space is more than what distance from a receptacle?
A. 4 feet
B. 6 feet
C. 8 feet
D. 12 feet
🟢 B. 6 feet
🔴 Explanation: NEC 210.52(A)(1) requires receptacle outlets in dwelling units so that no point
measured horizontally along the floor line in any wall space is more than 6 feet from a
receptacle outlet.
Question 6
What is the minimum size copper conductor permitted for a 20-ampere branch circuit?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
🟢 B. 12 AWG
, 🔴 Explanation: NEC 240.4(D) requires a minimum of 12 AWG copper for a 20-ampere branch
circuit. The 14 AWG copper conductor is limited to 15-ampere circuits.
Question 7
Which of the following describes the function of an equipment grounding conductor?
A. Carries normal return current
B. Provides a low-impedance path for fault current
C. Balances voltage between phases
D. Reduces resistance in the circuit
🟢 B. Provides a low-impedance path for fault current
🔴 Explanation: The equipment grounding conductor provides a low-impedance path for fault
current to return to the source, facilitating operation of overcurrent protective devices and
protecting personnel from electric shock.
Question 8
What is the maximum number of service disconnecting means permitted for a single service?
A. One
B. Four
C. Six
D. Unlimited
🟢 C. Six
🔴 Explanation: NEC 230.71 permits a maximum of six service disconnecting means for each
service. This is commonly known as the "six-disconnect rule."
Question 9
A 240-volt, 30-ampere circuit supplies a water heater. What is the minimum size copper
equipment grounding conductor required?
A. 14 AWG
B. 12 AWG
