Utah S200 Electrical Contractor 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 suggestions
B. To ensure electrical safety
C. To reduce installation costs
D. To standardize equipment brands
✔ B. To ensure electrical safety
The NEC is developed to safeguard persons and property from electrical
hazards, making safety its core purpose.
2. According to NEC, what is the minimum cover depth for direct-buried
residential branch circuits rated 120 volts with GFCI protection?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ B. 12 inches
GFCI protection allows reduced burial depth of 12 inches for certain
residential branch circuits.
3. What type of conductor is identified by green insulation?
A. Neutral conductor
B. Ungrounded conductor
, C. Equipment grounding conductor
D. Traveler conductor
✔ C. Equipment grounding conductor
Green insulation is reserved exclusively for grounding conductors to
ensure clear identification.
4. What is required before working on energized electrical equipment?
A. Approval from supervisor
B. Lockout/tagout procedures
C. Inspection by owner
D. Only insulated tools
✔ B. Lockout/tagout procedures
Lockout/tagout ensures circuits are de-energized and prevents accidental
energization during work.
5. What is the maximum number of conductors permitted in a 4-inch square
box without a device?
A. Depends on conductor size
B. Always 8
C. Always 10
D. Unlimited
✔ A. Depends on conductor size
Box fill is calculated based on conductor size and volume allowances per
NEC tables.
6. What is the ampacity of 12 AWG copper wire at 60°C?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
✔ B. 20 amps
12 AWG copper conductors are rated at 20 amps under standard NEC
conditions.
, 7. Which NEC article covers grounding and bonding?
A. Article 210
B. Article 250
C. Article 300
D. Article 400
✔ B. Article 250
Article 250 contains all requirements for grounding and bonding systems.
8. What is the purpose of bonding?
A. Increase voltage
B. Provide insulation
C. Ensure electrical continuity
D. Reduce resistance only
✔ C. Ensure electrical continuity
Bonding connects conductive parts to maintain continuity and ensure fault
current path.
9. What device protects against overload and short circuit?
A. Switch
B. Breaker
C. Receptacle
D. Transformer
✔ B. Breaker
Circuit breakers automatically interrupt current during overload or fault
conditions.
10.What is the minimum working space clearance in front of a 480V panel?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ B. 3 feet
NEC requires at least 3 feet clearance for systems up to 600V depending
on conditions.
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 suggestions
B. To ensure electrical safety
C. To reduce installation costs
D. To standardize equipment brands
✔ B. To ensure electrical safety
The NEC is developed to safeguard persons and property from electrical
hazards, making safety its core purpose.
2. According to NEC, what is the minimum cover depth for direct-buried
residential branch circuits rated 120 volts with GFCI protection?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ B. 12 inches
GFCI protection allows reduced burial depth of 12 inches for certain
residential branch circuits.
3. What type of conductor is identified by green insulation?
A. Neutral conductor
B. Ungrounded conductor
, C. Equipment grounding conductor
D. Traveler conductor
✔ C. Equipment grounding conductor
Green insulation is reserved exclusively for grounding conductors to
ensure clear identification.
4. What is required before working on energized electrical equipment?
A. Approval from supervisor
B. Lockout/tagout procedures
C. Inspection by owner
D. Only insulated tools
✔ B. Lockout/tagout procedures
Lockout/tagout ensures circuits are de-energized and prevents accidental
energization during work.
5. What is the maximum number of conductors permitted in a 4-inch square
box without a device?
A. Depends on conductor size
B. Always 8
C. Always 10
D. Unlimited
✔ A. Depends on conductor size
Box fill is calculated based on conductor size and volume allowances per
NEC tables.
6. What is the ampacity of 12 AWG copper wire at 60°C?
A. 15 amps
B. 20 amps
C. 25 amps
D. 30 amps
✔ B. 20 amps
12 AWG copper conductors are rated at 20 amps under standard NEC
conditions.
, 7. Which NEC article covers grounding and bonding?
A. Article 210
B. Article 250
C. Article 300
D. Article 400
✔ B. Article 250
Article 250 contains all requirements for grounding and bonding systems.
8. What is the purpose of bonding?
A. Increase voltage
B. Provide insulation
C. Ensure electrical continuity
D. Reduce resistance only
✔ C. Ensure electrical continuity
Bonding connects conductive parts to maintain continuity and ensure fault
current path.
9. What device protects against overload and short circuit?
A. Switch
B. Breaker
C. Receptacle
D. Transformer
✔ B. Breaker
Circuit breakers automatically interrupt current during overload or fault
conditions.
10.What is the minimum working space clearance in front of a 480V panel?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ B. 3 feet
NEC requires at least 3 feet clearance for systems up to 600V depending
on conditions.
