NORTH CAROLINA RESIDENTIAL SINGLE-FAMILY DWELLING ELECTRICAL CONTRACTOR LICENSING EXAMINATION COMPLETE QUESTIONS AND DETAILED SOLUTIONS LATEST UPDATE THIS YEAR JUST RELEASED

NORTH CAROLINA RESIDENTIAL SINGLE-FAMILY
DWELLING ELECTRICAL CONTRACTOR LICENSING
EXAMINATION COMPLETE QUESTIONS AND
DETAILED SOLUTIONS LATEST UPDATE THIS YEAR
JUST RELEASED

Exam Coverage
1. Electrical Theory and Fundamentals
 Voltage, current, resistance, power, energy, Ohm's Law, Kirchhoff's Laws
 AC/DC principles
 Series and parallel circuits
 Electrical calculations
2. National Electrical Code (NEC) Requirements
 General requirements
 Code interpretation
 Mandatory and permissive rules
 Definitions and terminology
 Code applications for residential occupancies
3. Services and Service Equipment
 Service sizing
 Service entrance conductors
 Metering
 Grounding electrode conductors
 Disconnecting means
 Load calculations
4. Branch Circuits and Feeders
 Branch circuit ratings
 AFCI requirements
 GFCI protection
 Multiwire branch circuits
 Feeder sizing
 Voltage drop considerations
5. Wiring Methods and Materials
 NM cable
 UF cable
 Conduit systems
 Boxes and fittings
 Cable support
 Conductor identification
 Raceway fill
6. Grounding and Bonding
 Equipment grounding conductors
 Grounding electrode systems
 Bonding methods
 Ground-fault current paths
 Neutral bonding requirements
7. Residential Equipment Installation
 Panelboards

,  Lighting outlets
 Receptacles
 Appliances
 HVAC equipment
 Water heaters
 Smoke alarms
 Ceiling fans
 Electric ranges
 Dryers
8. Safety Practices
 Personal protective equipment
 Lockout/tagout
 Electrical hazards
 Shock prevention
 Arc flash awareness
 Safe work practices
9. North Carolina Electrical Licensing Laws
 Contractor responsibilities
 Permits
 Inspections
 Licensing requirements
 Business regulations
 Scope of practice
10. Electrical Calculations and Code Applications
 Conductor sizing
 Box fill
 Conduit fill
 Load calculations
 Motor calculations
 Demand factors
 Residential service calculations



1.
A homeowner plans to install multiple new kitchen
countertop receptacles, and the contractor must determine
the minimum required branch circuit arrangement according
to applicable residential electrical code requirements. Which
installation complies best?
A. One 20-ampere circuit serving all countertop receptacles
B. Two or more required small-appliance branch circuits
serving countertop receptacles
C. One 15-ampere lighting circuit supplying countertop
receptacles

,D. One dedicated dishwasher circuit supplying countertop
receptacles
Answer: B
Rationale: Residential kitchens require at least two 20-ampere
small-appliance branch circuits serving countertop receptacle
outlets.

2.
During installation of a new service entrance, which factor
should receive the greatest consideration when selecting the
proper residential service conductor size for a single-family
dwelling?
A. Color of conductor insulation
B. Calculated electrical load
C. Length of grounding electrode conductor only
D. Number of switches installed
Answer: B
Rationale: Service conductors are selected based primarily
upon calculated load and applicable NEC ampacity
requirements.

3.
An electrician measures 120 volts across a receptacle but finds
connected equipment repeatedly malfunctions because of
excessive conductor resistance. Which electrical principle
most directly explains the resulting voltage loss?
A. Kirchhoff's Current Law
B. Ohm's Law
C. Faraday's Law
D. Coulomb's Law

, Answer: B
Rationale: Ohm's Law explains voltage drop resulting from
current flowing through conductor resistance.

4.
When installing nonmetallic-sheathed cable through wooden
framing members inside a residence, why must proper
securing and supporting intervals always be maintained
throughout the installation?
A. Improve cable appearance only
B. Reduce future structural movement effects and protect
wiring
C. Increase available voltage
D. Eliminate grounding requirements
Answer: B
Rationale: Proper cable support prevents physical damage
and maintains safe wiring practices.

5.
A residential bathroom receptacle installed near a lavatory
must include which protective feature to reduce the risk of
potentially serious electric shock under normal operating
conditions?
A. AFCI protection only
B. GFCI protection
C. Three-way switching
D. Surge protection only
Answer: B
Rationale: Bathroom receptacles require GFCI protection for
personnel safety.