100+ Free SC Plumber Practice Questions
Pass your South Carolina Journeyman Plumber License Exam exam on the first try — instant access, no signup required.
Under South Carolina's adoption of the IPC, what is the minimum size drain pipe permitted for a water closet?
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Key Facts: SC Plumber Exam
70%
Passing Score
LLR Contractors Licensing Board
80
Questions
3 hours
~$190
Exam Fee
PSI
IPC
Code
LLR Contractors Licensing Board
South Carolina's journeyman plumber exam is administered by PSI on behalf of the LLR Contractors Licensing Board. It has approximately 80 questions with a 3 hours time limit and requires 70% to pass. The exam fee is ~$190. South Carolina uses the IPC as its plumbing code.
Sample SC Plumber Practice Questions
Try these sample questions to test your SC Plumber exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Under South Carolina's adoption of the IPC, what is the minimum size drain pipe permitted for a water closet?
2What is the minimum slope for a 4-inch horizontal drainage pipe in South Carolina?
3What is the DFU value for a 1.6 GPF water closet in South Carolina?
4What backflow preventer is required for high-hazard cross-connections in South Carolina?
5What is the minimum trap seal depth in South Carolina?
6What is the minimum vent pipe size in South Carolina?
7What is the maximum static water pressure in South Carolina?
8When is a cleanout required on horizontal drainage in South Carolina?
9What device must be on every water heater in South Carolina?
10What is the max shower/bathtub delivery temperature in South Carolina?
About the SC Plumber Exam
South Carolina-specific journeyman plumber licensing exam based on the IPC covering drainage, water supply, venting, gas piping, and fixtures
Questions
80 scored questions
Time Limit
3 hours
Passing Score
70%
Exam Fee
~$190 (LLR Contractors Licensing Board / PSI)
SC Plumber Exam Content Outline
Drainage Systems & Pipe Sizing
Drain sizing, fixture units (DFU), slope requirements, cleanouts, building drain and sewer sizing per IPC
Water Supply & Distribution
Pipe sizing, backflow prevention, pressure regulation, cross-connection control, and water service requirements
Venting Systems
Vent sizing, wet venting, air admittance valves, vent termination, circuit venting, and combination waste and vent
Fixtures & Appliances
Fixture installation, clearances, water heaters, accessible fixtures, and commercial fixture requirements
Gas Piping
Gas pipe sizing, appliance venting, pressure testing, BTU calculations, CSST bonding, and combustion air
Code Administration & Special Systems
Permits, inspections, plan review, South Carolina state amendments, medical gas, grease interceptors, and storm drainage
How to Pass the SC Plumber Exam
What You Need to Know
- Passing score: 70%
- Exam length: 80 questions
- Time limit: 3 hours
- Exam fee: ~$190
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
SC Plumber Study Tips from Top Performers
Frequently Asked Questions
What plumbing code does South Carolina use?
South Carolina uses the IPC for its plumbing licensing exam. Candidates should study the current adopted edition with any state-specific amendments.
Who administers the South Carolina plumber exam?
The exam is administered by PSI on behalf of the LLR Contractors Licensing Board. Register through PSI after your application is approved.
What is the passing score?
South Carolina requires 70% to pass the journeyman plumber exam. The exam has 80 questions with a 3 hours time limit.
Is the exam open book?
Most PSI-administered plumbing exams allow a bound copy of the adopted plumbing code. No loose pages, handwritten notes, or electronic devices are permitted. Check current exam policies before your test date.