NC PLUMBING LICENSE EXAM 300 ACTUAL
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY
GRADED A+ ASSURED PASS
The North Carolina plumbing license exam is a comprehensive, open-book
assessment administered by the NC State Board of Examiners of Plumbing,
Heating and Fire Sprinkler Contractors. The Plumbing Contractor examination
consists of a 4.0-hour technical exam and a 1.5-hour Business and Law exam,
requiring a minimum score of 70 to pass. The technical content covers water
supply systems, drain-waste-vent (DWV) systems, fixture installation, backflow
prevention, gas piping regulations, and the North Carolina State Plumbing Code,
which is based on the International Plumbing Code (IPC) with NC amendments.
Section 1: Licensing, Administration, and Board Rules
(Questions 1–40)
1. Which state agency regulates plumbing contracting in North Carolina?
A. North Carolina Department of Health
B. North Carolina State Board of Examiners of Plumbing, Heating and Fire
Sprinkler Contractors
C. North Carolina Building Code Council
D. North Carolina Department of Labor
Correct Answer: B
Rationale: The North Carolina State Board of Examiners of Plumbing, Heating and
Fire Sprinkler Contractors regulates plumbing contracting under NCGS Chapter
87, Article 2.
2. What is the passing score required for the NC plumbing contractor examination?
A. 60
B. 65
,C. 70
D. 75
Correct Answer: C
Rationale: 21 NCAC 50 .0305 requires a grade of 70 on a 100-point maximum to
pass the NC plumbing contractor examination.
3. How many hours of hands-on experience must a Plumbing Contractor applicant
document?
A. 2,000 hours
B. 3,000 hours
C. 4,000 hours
D. 5,000 hours
Correct Answer: C
Rationale: Plumbing Contractor applicants must document 4,000 hours of hands-
on experience, up to one-half of which may be academic or technical training.
4. How many hours of experience are required for Plumbing Technician Class I?
A. 1,500 hours
B. 2,000 hours
C. 2,500 hours
D. 3,000 hours
Correct Answer: D
Rationale: Plumbing Technician Class I candidates need 3,000 hours of
experience.
5. How many hours of experience are required for Plumbing Technician Class II?
A. 2,000 hours
B. 2,500 hours
C. 3,000 hours
D. 3,500 hours
Correct Answer: B
Rationale: Plumbing Technician Class II candidates need 2,500 hours of
experience.
6. What is the cost of the application fee for the NC plumbing license by
examination?
,A. $50
B. $75
C. $100
D. $150
Correct Answer: B
Rationale: The application fee is $75, and the examination fee is $75, for a total of
$150. The $75 application fee is nonrefundable.
7. What is the annual license fee for a NC plumbing contractor?
A. $75
B. $100
C. $125
D. $150
Correct Answer: D
Rationale: The annual license fee is $150, due within 45 days of the result notice.
8. When do all NC plumbing licenses expire?
A. June 30
B. December 31
C. January 1
D. March 31
Correct Answer: B
Rationale: All licenses expire on 31 December each year.
9. Which license classification allows a contractor to work on all structures?
A. Plumbing Contractor Class II
B. Plumbing Contractor Class I
C. Restricted Limited Plumbing Contractor
D. Plumbing Technician Class I
Correct Answer: B
Rationale: Plumbing Contractor Class I is licensed for all structures. Class II is
restricted to single-family detached dwellings only.
10. Which license classification is restricted to single-family detached dwellings?
A. Plumbing Contractor Class I
B. Plumbing Contractor Class II
, C. Plumbing Technician Class I
D. Restricted Limited Plumbing Contractor
Correct Answer: B
Rationale: Plumbing Contractor Class II is restricted to single-family detached
dwellings only.
11. What is the duration of the technical portion of the NC plumbing contractor
exam?
A. 2.0 hours
B. 3.0 hours
C. 4.0 hours
D. 5.0 hours
Correct Answer: C
Rationale: The Plumbing Contractor examination is delivered by PSI as a 4.0-hour
technical exam plus a 1.5-hour Business and Law exam.
12. What is the duration of the Business and Law portion of the NC plumbing
contractor exam?
A. 1.0 hour
B. 1.5 hours
C. 2.0 hours
D. 2.5 hours
Correct Answer: B
Rationale: The Business and Law exam is 1.5 hours in duration.
13. What reference materials are permitted during the NC plumbing exam?
A. Any printed materials
B. Only the Board's Book Reference List, with highlighting only
C. Handwritten notes
D. PDF printouts
Correct Answer: B
Rationale: Every exam is open-book against the Board's Book Reference List, but
highlighting is the only alteration allowed. No writing, underlining, indexing,
homemade tabs, printed PDFs, or loose paper are permitted.
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY
GRADED A+ ASSURED PASS
The North Carolina plumbing license exam is a comprehensive, open-book
assessment administered by the NC State Board of Examiners of Plumbing,
Heating and Fire Sprinkler Contractors. The Plumbing Contractor examination
consists of a 4.0-hour technical exam and a 1.5-hour Business and Law exam,
requiring a minimum score of 70 to pass. The technical content covers water
supply systems, drain-waste-vent (DWV) systems, fixture installation, backflow
prevention, gas piping regulations, and the North Carolina State Plumbing Code,
which is based on the International Plumbing Code (IPC) with NC amendments.
Section 1: Licensing, Administration, and Board Rules
(Questions 1–40)
1. Which state agency regulates plumbing contracting in North Carolina?
A. North Carolina Department of Health
B. North Carolina State Board of Examiners of Plumbing, Heating and Fire
Sprinkler Contractors
C. North Carolina Building Code Council
D. North Carolina Department of Labor
Correct Answer: B
Rationale: The North Carolina State Board of Examiners of Plumbing, Heating and
Fire Sprinkler Contractors regulates plumbing contracting under NCGS Chapter
87, Article 2.
2. What is the passing score required for the NC plumbing contractor examination?
A. 60
B. 65
,C. 70
D. 75
Correct Answer: C
Rationale: 21 NCAC 50 .0305 requires a grade of 70 on a 100-point maximum to
pass the NC plumbing contractor examination.
3. How many hours of hands-on experience must a Plumbing Contractor applicant
document?
A. 2,000 hours
B. 3,000 hours
C. 4,000 hours
D. 5,000 hours
Correct Answer: C
Rationale: Plumbing Contractor applicants must document 4,000 hours of hands-
on experience, up to one-half of which may be academic or technical training.
4. How many hours of experience are required for Plumbing Technician Class I?
A. 1,500 hours
B. 2,000 hours
C. 2,500 hours
D. 3,000 hours
Correct Answer: D
Rationale: Plumbing Technician Class I candidates need 3,000 hours of
experience.
5. How many hours of experience are required for Plumbing Technician Class II?
A. 2,000 hours
B. 2,500 hours
C. 3,000 hours
D. 3,500 hours
Correct Answer: B
Rationale: Plumbing Technician Class II candidates need 2,500 hours of
experience.
6. What is the cost of the application fee for the NC plumbing license by
examination?
,A. $50
B. $75
C. $100
D. $150
Correct Answer: B
Rationale: The application fee is $75, and the examination fee is $75, for a total of
$150. The $75 application fee is nonrefundable.
7. What is the annual license fee for a NC plumbing contractor?
A. $75
B. $100
C. $125
D. $150
Correct Answer: D
Rationale: The annual license fee is $150, due within 45 days of the result notice.
8. When do all NC plumbing licenses expire?
A. June 30
B. December 31
C. January 1
D. March 31
Correct Answer: B
Rationale: All licenses expire on 31 December each year.
9. Which license classification allows a contractor to work on all structures?
A. Plumbing Contractor Class II
B. Plumbing Contractor Class I
C. Restricted Limited Plumbing Contractor
D. Plumbing Technician Class I
Correct Answer: B
Rationale: Plumbing Contractor Class I is licensed for all structures. Class II is
restricted to single-family detached dwellings only.
10. Which license classification is restricted to single-family detached dwellings?
A. Plumbing Contractor Class I
B. Plumbing Contractor Class II
, C. Plumbing Technician Class I
D. Restricted Limited Plumbing Contractor
Correct Answer: B
Rationale: Plumbing Contractor Class II is restricted to single-family detached
dwellings only.
11. What is the duration of the technical portion of the NC plumbing contractor
exam?
A. 2.0 hours
B. 3.0 hours
C. 4.0 hours
D. 5.0 hours
Correct Answer: C
Rationale: The Plumbing Contractor examination is delivered by PSI as a 4.0-hour
technical exam plus a 1.5-hour Business and Law exam.
12. What is the duration of the Business and Law portion of the NC plumbing
contractor exam?
A. 1.0 hour
B. 1.5 hours
C. 2.0 hours
D. 2.5 hours
Correct Answer: B
Rationale: The Business and Law exam is 1.5 hours in duration.
13. What reference materials are permitted during the NC plumbing exam?
A. Any printed materials
B. Only the Board's Book Reference List, with highlighting only
C. Handwritten notes
D. PDF printouts
Correct Answer: B
Rationale: Every exam is open-book against the Board's Book Reference List, but
highlighting is the only alteration allowed. No writing, underlining, indexing,
homemade tabs, printed PDFs, or loose paper are permitted.
