NC Plumbing, Heating & Fire Sprinkler
Contractors Board – Plumbing
Contractor Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant
Download Pdf. (Limited)
1. Under North Carolina law, which agency is responsible for regulating
plumbing contractors and administering the applicable licensing
examinations?
A. North Carolina Board of Electrical Contractors
B. North Carolina Licensing Board for General Contractors
C. North Carolina State Board of Examiners of Plumbing, Heating, and Fire
Sprinkler Contractors
D. North Carolina Board of Architecture
,Rationale: The North Carolina State Board of Examiners of Plumbing,
Heating, and Fire Sprinkler Contractors establishes licensing standards,
administers examinations, and regulates the plumbing, heating, and fire
sprinkler contracting professions.
2. What is the fundamental purpose of North Carolina's plumbing
contractor licensing requirements?
A. To regulate the retail sale of plumbing fixtures
B. To establish uniform prices for plumbing labor
C. To protect public health, comfort, and safety by requiring demonstrated
competence in regulated plumbing work
D. To eliminate the need for plumbing inspections
Rationale: North Carolina law expressly establishes the licensing system to
protect public health, comfort, and safety by setting standards for
competence, experience, and efficiency in plumbing, heating, and fire
sprinkler contracting.
3. Which statement correctly distinguishes Class I and Class II plumbing
licenses in North Carolina?
A. Class I applies only to single-family homes, while Class II applies to
commercial buildings.
B. Class I is limited to exterior piping, while Class II is limited to interior
piping.
,C. Class I covers plumbing systems for all structures, while Class II covers
plumbing and heating systems in single-family detached residential
dwellings.
D. Class II is a higher classification than Class I for commercial construction.
Rationale: North Carolina law establishes Class I as the broader
classification covering plumbing, heating, and fire sprinkler systems for all
structures, while Class II covers plumbing and heating systems in single-
family detached residential dwellings.
4. A contractor holds only a Limited Plumbing Contractor license. Which
type of work is specifically within the statutory scope of that restricted
classification?
A. Installation of plumbing systems throughout a high-rise office building
B. Installation of all interior plumbing in a single-family residence
C. Installation, repair, or replacement of exterior potable water service
lines or qualifying backflow preventers serving irrigation or domestic
water systems of 2 inches or smaller
D. Installation of commercial natural-gas piping throughout an apartment
complex
Rationale: The Limited Plumbing Contractor classification specifically
addresses certain exterior potable-water service lines and qualifying
, backflow preventers serving irrigation or domestic water systems when
the piping is 2 inches in diameter or smaller.
5. Under the Limited Plumbing Contractor classification, what maximum
diameter applies to the specified exterior building sewer or water
service piping?
A. 1 inch
B. 2 inches
C. 4 inches
D. 6 inches
Rationale: The statute identifies exterior building sewer or water service
piping of 2 inches in diameter or smaller as work that may be performed
under the Limited Plumbing Contractor classification.
6. Which project would most clearly exceed the ordinary scope of a
Limited Plumbing Contractor license?
A. Replacing an exterior 1½-inch domestic water service line
B. Installing an exterior 2-inch building sewer line within the authorized
scope
C. Replacing a qualifying exterior backflow preventer
D. Installing a complete interior plumbing system for a new commercial
building
Contractors Board – Plumbing
Contractor Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant
Download Pdf. (Limited)
1. Under North Carolina law, which agency is responsible for regulating
plumbing contractors and administering the applicable licensing
examinations?
A. North Carolina Board of Electrical Contractors
B. North Carolina Licensing Board for General Contractors
C. North Carolina State Board of Examiners of Plumbing, Heating, and Fire
Sprinkler Contractors
D. North Carolina Board of Architecture
,Rationale: The North Carolina State Board of Examiners of Plumbing,
Heating, and Fire Sprinkler Contractors establishes licensing standards,
administers examinations, and regulates the plumbing, heating, and fire
sprinkler contracting professions.
2. What is the fundamental purpose of North Carolina's plumbing
contractor licensing requirements?
A. To regulate the retail sale of plumbing fixtures
B. To establish uniform prices for plumbing labor
C. To protect public health, comfort, and safety by requiring demonstrated
competence in regulated plumbing work
D. To eliminate the need for plumbing inspections
Rationale: North Carolina law expressly establishes the licensing system to
protect public health, comfort, and safety by setting standards for
competence, experience, and efficiency in plumbing, heating, and fire
sprinkler contracting.
3. Which statement correctly distinguishes Class I and Class II plumbing
licenses in North Carolina?
A. Class I applies only to single-family homes, while Class II applies to
commercial buildings.
B. Class I is limited to exterior piping, while Class II is limited to interior
piping.
,C. Class I covers plumbing systems for all structures, while Class II covers
plumbing and heating systems in single-family detached residential
dwellings.
D. Class II is a higher classification than Class I for commercial construction.
Rationale: North Carolina law establishes Class I as the broader
classification covering plumbing, heating, and fire sprinkler systems for all
structures, while Class II covers plumbing and heating systems in single-
family detached residential dwellings.
4. A contractor holds only a Limited Plumbing Contractor license. Which
type of work is specifically within the statutory scope of that restricted
classification?
A. Installation of plumbing systems throughout a high-rise office building
B. Installation of all interior plumbing in a single-family residence
C. Installation, repair, or replacement of exterior potable water service
lines or qualifying backflow preventers serving irrigation or domestic
water systems of 2 inches or smaller
D. Installation of commercial natural-gas piping throughout an apartment
complex
Rationale: The Limited Plumbing Contractor classification specifically
addresses certain exterior potable-water service lines and qualifying
, backflow preventers serving irrigation or domestic water systems when
the piping is 2 inches in diameter or smaller.
5. Under the Limited Plumbing Contractor classification, what maximum
diameter applies to the specified exterior building sewer or water
service piping?
A. 1 inch
B. 2 inches
C. 4 inches
D. 6 inches
Rationale: The statute identifies exterior building sewer or water service
piping of 2 inches in diameter or smaller as work that may be performed
under the Limited Plumbing Contractor classification.
6. Which project would most clearly exceed the ordinary scope of a
Limited Plumbing Contractor license?
A. Replacing an exterior 1½-inch domestic water service line
B. Installing an exterior 2-inch building sewer line within the authorized
scope
C. Replacing a qualifying exterior backflow preventer
D. Installing a complete interior plumbing system for a new commercial
building
