NORTH CAROLINA RESIDENTIAL SINGLE-FAMILY DWELLING ELECTRICAL CONTRACTOR
LICENSING EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
,CORE DOMAINS
National Electrical Code (NEC) 2020 Edition
Bonding and Grounding Systems
Overcurrent Protection and Circuit Design
Wiring Methods and Terminations
Boxes and Fittings Installation
Service Entrance and Equipment
Load Calculations for Dwelling Units
,Appliances, Equipment, and Lighting
Special Occupancies (Swimming Pools, Mobile Homes)
North Carolina Electrical Laws and Business Practices
INTRODUCTION
This assessment evaluates competency required for the North
Carolina Residential Single-Family Dwelling Electrical
Contractor Licensing Examination (SP-SFD classification).
The exam tests knowledge of electrical code compliance,
safe installation practices, and professional decision-*making in residential contexts. Questions are multiple-
choice
and scenario-based, emphasizing real-world application of
the National Electrical Code and state-specific regulations.
Candidates must demonstrate understanding of grounding,
wiring methods, load calculations, overcurrent protection,
, and legal requirements for electrical contracting in North
Carolina. Successful performance indicates readiness to
install, maintain, and repair electrical systems in single-*family residential dwellings safely and legally.
Section One: Questions 1–100
Question 1
What is the primary purpose of Article 250 in the National Electrical Code?
A. To specify conductor ampacity ratings
B. To establish grounding and bonding requirements
C. To define overcurrent protection device sizing
D. To outline wiring method specifications
🟢 B. To establish grounding and bonding requirements
🔴 RATIONALE: Article 250 of the NEC covers grounding and bonding requirements for electrical systems,
including methods, equipment, and conductor specifications to ensure safety and fault current path
establishment.
Question 2
A residential service entrance requires a grounding electrode conductor. What is the minimum size copper
grounding electrode conductor for a 200-ampere service with 2/0 AWG service entrance conductors?
LICENSING EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
,CORE DOMAINS
National Electrical Code (NEC) 2020 Edition
Bonding and Grounding Systems
Overcurrent Protection and Circuit Design
Wiring Methods and Terminations
Boxes and Fittings Installation
Service Entrance and Equipment
Load Calculations for Dwelling Units
,Appliances, Equipment, and Lighting
Special Occupancies (Swimming Pools, Mobile Homes)
North Carolina Electrical Laws and Business Practices
INTRODUCTION
This assessment evaluates competency required for the North
Carolina Residential Single-Family Dwelling Electrical
Contractor Licensing Examination (SP-SFD classification).
The exam tests knowledge of electrical code compliance,
safe installation practices, and professional decision-*making in residential contexts. Questions are multiple-
choice
and scenario-based, emphasizing real-world application of
the National Electrical Code and state-specific regulations.
Candidates must demonstrate understanding of grounding,
wiring methods, load calculations, overcurrent protection,
, and legal requirements for electrical contracting in North
Carolina. Successful performance indicates readiness to
install, maintain, and repair electrical systems in single-*family residential dwellings safely and legally.
Section One: Questions 1–100
Question 1
What is the primary purpose of Article 250 in the National Electrical Code?
A. To specify conductor ampacity ratings
B. To establish grounding and bonding requirements
C. To define overcurrent protection device sizing
D. To outline wiring method specifications
🟢 B. To establish grounding and bonding requirements
🔴 RATIONALE: Article 250 of the NEC covers grounding and bonding requirements for electrical systems,
including methods, equipment, and conductor specifications to ensure safety and fault current path
establishment.
Question 2
A residential service entrance requires a grounding electrode conductor. What is the minimum size copper
grounding electrode conductor for a 200-ampere service with 2/0 AWG service entrance conductors?
