Residential Wiring Final Exam Review with Complete Solutions
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Module
Residential Wiring
Institution
Residential Wiring
Residential Wiring Final Exam Review
with Complete Solutions
What is the standard voltage for most residential electrical systems in the U.S.?
A) 120V
B) 240V
C) 480V
D) 120/240V
Which type of circuit is designed to protect against overloads in a household?
A) Series circuit
B) Branc...
Residential Wiring Final Exam Review
with Complete Solutions
What is the standard voltage for most residential electrical systems in the U.S.?
A) 120V
B) 240V
C) 480V
✔✔D) 120/240V
Which type of circuit is designed to protect against overloads in a household?
A) Series circuit
✔✔B) Branch circuit
C) Parallel circuit
D) Ground circuit
What is the primary purpose of a circuit breaker in residential wiring?
A) To enhance electrical flow
✔✔B) To protect against overcurrent
C) To regulate voltage
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,D) To provide additional outlets
What does GFCI stand for, and what is its function?
A) General Fuse Circuit Interrupter; prevents overheating
✔✔B) Ground Fault Circuit Interrupter; prevents electric shock
C) Grounded Fuse Current Interruption; manages load
D) General Function Control Interface; monitors appliances
What type of wire is typically used for residential lighting circuits?
A) THHN
B) MC Cable
✔✔C) NM Cable (Romex)
D) Armored Cable
Which of the following is a benefit of using LED lighting in a home?
A) Higher heat production
B) Shorter lifespan
✔✔C) Energy efficiency and longer lifespan
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,D) More frequent bulb replacements
What is the function of a junction box in residential wiring?
✔✔A) To house and protect electrical connections
B) To provide additional power
C) To regulate current flow
D) To act as a switch
What is the recommended height for electrical outlets in residential construction?
A) 6 inches above the floor
✔✔B) 12-18 inches above the floor
C) 24 inches above the floor
D) 36 inches above the floor
Which wiring method is considered the safest for outdoor applications?
✔✔A) UF Cable (Underground Feeder)
B) NM Cable
C) THHN Wire
3
, D) BX Cable
What is the purpose of using a grounding rod in a residential electrical system?
✔✔A) To provide a safe path for electrical surges
B) To improve electrical flow
C) To increase voltage
D) To reduce power consumption
Which of the following is a common symptom of a faulty electrical outlet?
A) Normal function
✔✔B) Burning smell or discolored faceplate
C) Bright lighting
D) Quiet operation
How can you determine if a circuit is overloaded?
A) Check for a tripped light switch
✔✔B) Monitor for frequently tripped circuit breakers
C) Listen for buzzing sounds
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