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New Hampshire (NH) Skilled Trades &
Construction Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
Pdf
___________________________________________________________________
1. What is the primary purpose of a building code?
A. To increase construction costs
B. To establish minimum standards for health, safety, and welfare
C. To eliminate the need for inspections
D. To specify the brand of materials contractors must use
Answer: To establish minimum standards for health, safety, and welfare
Rationale: Building codes establish minimum requirements intended to protect
occupants and the public from unsafe construction, fire, structural, electrical,
plumbing, and mechanical conditions.
2. Which organization publishes the National Electrical Code (NEC)?
A. ICC
B. OSHA
C. NFPA
D. ASHRAE
,Answer: NFPA
Rationale: The National Fire Protection Association publishes NFPA 70,
commonly known as the National Electrical Code.
3. Which NEC edition is identified in New Hampshire's currently referenced
state building-code framework?
A. 2014 NEC
B. 2017 NEC
C. 2020 NEC
D. 2023 NEC
Answer: 2020 NEC
Rationale: New Hampshire's adopted building-code framework references the
2020 National Electrical Code, subject to applicable state amendments and
subsequent official changes.
4. What is the purpose of a circuit breaker?
A. To increase voltage
B. To protect conductors from excessive current
C. To reduce conductor resistance
D. To increase motor speed
Answer: To protect conductors from excessive current
Rationale: A circuit breaker opens the circuit when current exceeds its protective
rating, helping prevent conductor overheating and fire.
5. What does GFCI stand for?
A. Ground Fault Circuit Interrupter
B. General Frequency Current Indicator
C. Grounded Feeder Circuit Installation
D. Generator Fault Control Instrument
,Answer: Ground Fault Circuit Interrupter
Rationale: A GFCI monitors current balance and rapidly interrupts power when it
detects a ground-fault condition that could create a shock hazard.
6. What is the main purpose of equipment grounding?
A. To increase normal operating current
B. To provide a low-impedance path for fault current
C. To eliminate the neutral conductor
D. To reduce utility voltage
Answer: To provide a low-impedance path for fault current
Rationale: The equipment grounding path helps fault current return to the
source so protective devices can operate quickly.
7. Which instrument is commonly used to measure electrical resistance?
A. Ammeter
B. Voltmeter
C. Ohmmeter
D. Frequency meter
Answer: Ohmmeter
Rationale: An ohmmeter measures resistance, expressed in ohms.
8. Before working on an electrical circuit, what should be done first?
A. Increase the breaker size
B. De-energize and verify the circuit is de-energized
C. Remove the grounding conductor
D. Install a larger fuse
Answer: De-energize and verify the circuit is de-energized
Rationale: Lockout/tagout and verification of the absence of voltage are
fundamental electrical safety practices.
, 9. What is the purpose of an electrical service disconnect?
A. To increase service voltage
B. To provide a means of disconnecting the premises wiring from the supply
C. To replace all branch-circuit breakers
D. To increase conductor ampacity
Answer: To provide a means of disconnecting the premises wiring from the
supply
Rationale: The service disconnect provides a controlled means of disconnecting
the electrical installation from its source.
10.In a series circuit, what happens if one component opens?
A. Current increases
B. The remaining components receive double voltage
C. Current stops throughout the series path
D. The circuit automatically becomes parallel
Answer: Current stops throughout the series path
Rationale: A series circuit has one continuous current path. Opening that path
interrupts current through the entire circuit.
11.What is the basic relationship described by Ohm's law?
A. P = I/R
B. V = IR
C. R = VI
D. I = VR
Answer: V = IR
Rationale: Ohm's law states that voltage equals current multiplied by
resistance.
New Hampshire (NH) Skilled Trades &
Construction Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
___________________________________________________________________
1. What is the primary purpose of a building code?
A. To increase construction costs
B. To establish minimum standards for health, safety, and welfare
C. To eliminate the need for inspections
D. To specify the brand of materials contractors must use
Answer: To establish minimum standards for health, safety, and welfare
Rationale: Building codes establish minimum requirements intended to protect
occupants and the public from unsafe construction, fire, structural, electrical,
plumbing, and mechanical conditions.
2. Which organization publishes the National Electrical Code (NEC)?
A. ICC
B. OSHA
C. NFPA
D. ASHRAE
,Answer: NFPA
Rationale: The National Fire Protection Association publishes NFPA 70,
commonly known as the National Electrical Code.
3. Which NEC edition is identified in New Hampshire's currently referenced
state building-code framework?
A. 2014 NEC
B. 2017 NEC
C. 2020 NEC
D. 2023 NEC
Answer: 2020 NEC
Rationale: New Hampshire's adopted building-code framework references the
2020 National Electrical Code, subject to applicable state amendments and
subsequent official changes.
4. What is the purpose of a circuit breaker?
A. To increase voltage
B. To protect conductors from excessive current
C. To reduce conductor resistance
D. To increase motor speed
Answer: To protect conductors from excessive current
Rationale: A circuit breaker opens the circuit when current exceeds its protective
rating, helping prevent conductor overheating and fire.
5. What does GFCI stand for?
A. Ground Fault Circuit Interrupter
B. General Frequency Current Indicator
C. Grounded Feeder Circuit Installation
D. Generator Fault Control Instrument
,Answer: Ground Fault Circuit Interrupter
Rationale: A GFCI monitors current balance and rapidly interrupts power when it
detects a ground-fault condition that could create a shock hazard.
6. What is the main purpose of equipment grounding?
A. To increase normal operating current
B. To provide a low-impedance path for fault current
C. To eliminate the neutral conductor
D. To reduce utility voltage
Answer: To provide a low-impedance path for fault current
Rationale: The equipment grounding path helps fault current return to the
source so protective devices can operate quickly.
7. Which instrument is commonly used to measure electrical resistance?
A. Ammeter
B. Voltmeter
C. Ohmmeter
D. Frequency meter
Answer: Ohmmeter
Rationale: An ohmmeter measures resistance, expressed in ohms.
8. Before working on an electrical circuit, what should be done first?
A. Increase the breaker size
B. De-energize and verify the circuit is de-energized
C. Remove the grounding conductor
D. Install a larger fuse
Answer: De-energize and verify the circuit is de-energized
Rationale: Lockout/tagout and verification of the absence of voltage are
fundamental electrical safety practices.
, 9. What is the purpose of an electrical service disconnect?
A. To increase service voltage
B. To provide a means of disconnecting the premises wiring from the supply
C. To replace all branch-circuit breakers
D. To increase conductor ampacity
Answer: To provide a means of disconnecting the premises wiring from the
supply
Rationale: The service disconnect provides a controlled means of disconnecting
the electrical installation from its source.
10.In a series circuit, what happens if one component opens?
A. Current increases
B. The remaining components receive double voltage
C. Current stops throughout the series path
D. The circuit automatically becomes parallel
Answer: Current stops throughout the series path
Rationale: A series circuit has one continuous current path. Opening that path
interrupts current through the entire circuit.
11.What is the basic relationship described by Ohm's law?
A. P = I/R
B. V = IR
C. R = VI
D. I = VR
Answer: V = IR
Rationale: Ohm's law states that voltage equals current multiplied by
resistance.
