Construction Trade Exam Research Area

C-77 (CR-77) Plumbing, including Solar
(Commercial / Dual License)

Apply for the License

Arizona Registrar of Contractors
1700 W Washington St, Suite 105
Phoenix, AZ 85007
Phone: (602) 542-1525
Licensing Link

Exam Administrator

PSI Services, LLC
3210 E. Tropicana
Las Vegas, NV 89121
Phone: (800) 733-9267
Examination Link

Exam Type


Exam Content

Subject Areas # of
Drainage Waste and Vents 15
Indirect Waste 4
Water Supply Systems 12
Backflow Prevention 5
Roof Drains and Storm Drainage Systems 5
Plumbing Fixtures (including Water Heaters and Accessibility) 6
General Knowledge and General Regulations 8
Specialty Plumbing, Interceptors, and Traps 5
Isometric Analysis 5
Fuel Gas 10
Septic and Sewer 10
Hydronics 5
Fire Sprinklers 5
Excavation 5

Total Number of Test Questions: 100
Time Allowed (Minutes): 240


Solar Portion # of
Total Number of Test Questions: 30
Time Allowed (Minutes): 75
The state of Arizona also requires that you take and pass a written Business Management exam for this trade

Go to Business and Law Offering

Reference Books Permitted in the Exam

1. Code of Federal Regulations - 29 CFR Part 1926 (OSHA), GPO - OR - (OSHA) Selections by PSI, (latest amendments). Buy from PSI
2. International Fuel Gas Code, 2009, ICC. Doc Link
3. International Mechanical Code, 2009, ICC. Doc Link
4. International Plumbing Code, 2009, ICC. Doc Link
5. NFPA 13: Standard for the Installation of Sprinkler Systems, 2007, NFPA. NFPA Link
6. NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 2007, NFPA. NFPA Link
7. NFPA 13R: Standard for the Installation of Sprinkler Systems for Residential Occupancies Up To and Including Four Stories in Height, 2007, NFPA. NFPA Link
8. On-site Wastewater Treatment Facility Provisions in Unified Water Quality Permit Rule, Arizona Administrative Code Title 18, Chapter 9, 2006. Doc Link

Reference Books NOT Permitted in the Exam

1. Mathematics for Plumbers and Pipefitters, 7th Edition, 2008, Lee Smith. Buy at Amazon
2. IPT's Pipe Trades Handbook, 1991, Robert A. Lee, IPT Publishing and Training. Buy at Amazon
3. Boiler Operator's Guide, 4th Edition, 1997, Anthony L Kohan. Buy at Amazon
4. Arizona 811: Arizona Blue Stake, Inc., July 2010 (Revised 2015), Arizona Blue Stake. Doc Link
5. Modern Hydronic Heating for Residential and Light Commercial Buildings, 2nd Edition, 2004, John Siegenthaler. Buy at Amazon
6. Solar Water and Pool Heating Manual: Design and Installation & Repair and Maintenance, Florida Solar Energy Center. Doc Link
Study materials are currently NOT available for this exam

Please fill out the form "Request Availability" and we'll give you an idea when we can make it available again

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