PracticeVideosBlogFlashcardsEspañol
All Practice Exams

100+ Free NV C-37C Solar Air Conditioning Practice Questions

Prepare for the Nevada C-37C Solar Air Conditioning Contractor Examination exam with instant access — no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
100+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More Nevada NSCB Contractor Examinations

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

Nevada A General Engineering Contractor Examination

Practice Questions

Nevada A-10 Commercial and Residential Pools Contractor Examination

Practice Questions

Nevada A-10A Residential Pools Contractor Examination

Practice Questions

Nevada A-10B Residential Spas Contractor Examination

Practice Questions

Nevada A-10C Repair of Pools and Spas Contractor Examination

Practice Questions

Nevada A-10E Pool Alteration and Repair Contractor Examination

Practice Questions
2026 Statistics

Key Facts: NV C-37C Solar Air Conditioning Exam

45 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

32 of 45 points

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

1.5 hours

Time Allowed

PSI Nevada Contractor CIB updated 3/25/2026

USD 95

PSI Exam Fee (one portion)

PSI Nevada Contractor CIB updated 3/25/2026

Open Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-37C Solar Air Conditioning Contractor Examination is the official NSCB/PSI open book exam: 45 questions, 32 of 45 points, 1.5 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-37C Solar Air Conditioning Practice Questions

Try these sample questions to test your NV C-37C Solar Air Conditioning exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under NAC 624.540(2)(c), which piping is within the Nevada C-37C Solar Air Conditioning scope?
A.Piping that belongs to the collectors, storage, and conversion equipment used to turn solar energy into air-temperature control
B.Every potable fixture branch in the building, including lavatories and water closets
C.Swimming-pool circulation piping and chlorinator loops
D.Photovoltaic DC homeruns from modules to an inverter
Explanation: NAC 624.540(2)(c) authorizes C-37C to install collectors, piping, storage, and other equipment that convert solar energy into energy used to control air temperatures. That is solar-thermal absorption, desiccant, or solar-hydronic cooling hardware. House fixture plumbing is C-1D, pool work is C-37D, and PV wiring is not a C-37C thermal system.
2Which copper tube type is the usual choice for a pressurized glazed-collector loop that delivers 180–200°F fluid to a single-effect absorption generator?
A.Type M DWV copper used for waste stacks
B.Soft 50/50 lead-tin waste solder over Type M refrigeration tube
C.Type L or K copper water tube listed in 2018 UPC Chapter 6 for hot-water service
D.Unlisted thin-wall automotive heater hose
Explanation: UPC Chapter 6 lists Type L and Type K copper water tube for hot-water distribution. A glazed collector that feeds an absorption generator regularly runs near 180–200°F and can stagnate much hotter, so listed copper water tube with high-temperature joints is the standard C-37C collector material. DWV copper and 50/50 solder are waste-system products.
3Why must outdoor collector supply and return piping on a C-37C solar-hydronic cooling system be insulated?
A.To raise the tube's pressure rating so Type M can replace Type L
B.To cut heat loss so 180°F generator heat is not dumped to the wind before it reaches storage or the chiller
C.To make PVC Schedule 40 legal on a glazed-collector loop
D.To replace the need for a temperature-and-pressure relief valve
Explanation: FSEC solar-thermal practice treats insulated supply and return as part of system performance. A single-effect LiBr generator needs roughly 176–203°F water; bare roof piping bleeds that temperature before the chiller sees it. Insulation does not change pressure ratings, legalize PVC, or replace UPC relief valves.
4When copper collector-loop tubing is joined to a galvanized-steel tank fitting on a solar-cooling store, the 2018 UPC requires which fitting?
A.A sanitary tee turned on its back
B.A no-hub shielded coupling
C.A PVC solvent-weld adapter
D.A dielectric union or other listed dielectric fitting
Explanation: UPC 605.15 / 605.16 require a dielectric union or other listed dielectric fitting when copper or copper-alloy tube joins galvanized steel. Without it, galvanic current consumes the steel in the glycol or water loop. DWV couplings and PVC adapters are the wrong system and the wrong materials.
5Per 2018 UPC Table 313.3, horizontal copper or copper-alloy tubing 1-1/2 inches and smaller in a solar-cooling collector loop shall be supported at intervals not exceeding:
A.32 inches
B.6 feet
C.10 feet
D.12 feet
Explanation: Table 313.3 limits horizontal copper and copper-alloy tubing 1-1/2 inches and smaller to 6 feet. Copper 2 inches and larger may go 10 feet. Vertical copper is supported at each floor, not more than 10 feet. Do not apply the 32-inch PEX row or the 12-foot steel-water row to copper collector tube.
6In a drainback solar-cooling collector loop, supply and return piping must be pitched so the collectors empty when the pump stops. The FSEC solar-manual practice slope is at least:
A.1/8 inch per foot toward the drainback reservoir, with no traps
B.Level piping so the pump does not lose prime
C.1/4 inch per foot toward the drainback reservoir, with no traps or uphill pockets
D.1 inch per foot toward the collectors so they stay full of water
Explanation: FSEC drainback design requires a continuous fall of about 1/4 inch per foot from the collectors back to the indoor reservoir so every tube empties by gravity. Traps, belly sags, and uphill fittings leave standing water that freezes on a Reno night and can rupture a solar-cooling array. Level or reverse pitch defeats drainback freeze protection.
7On chilled-water piping that carries evaporator water from a solar-driven absorption chiller to a cooling coil, where must the vapor retarder be placed?
A.On the pipe surface under the insulation
B.Only on the ends of each pipe length
C.Vapor retarders are never used on cold piping
D.On the outside of the insulation, sealed at every joint and penetration
Explanation: Chilled-water lines run near 44°F, below ambient dew point. Moisture tries to move inward, so the vapor retarder belongs on the warm (outer) face of the insulation and must be continuous. A retarder against the pipe traps moisture inside the jacket and wets the insulation.
8Per 2018 UPC Table 313.3, horizontal PEX tubing 1 inch and smaller used as a chilled-water radiant-ceiling loop shall be supported at least every:
A.32 inches
B.6 feet
C.10 feet
D.12 feet
Explanation: Table 313.3 requires 32-inch horizontal spacing for PEX 1 inch and smaller, and 4 feet for 1-1/4 inch and larger. PEX is flexible; copper or steel hanger spacing lets it sag, kink, and trap air that starves a radiant cooling panel. Vertical PEX needs a mid-story guide and expansion every 30 feet.
9Why is CPVC generally unacceptable as the outdoor glazed-collector loop that feeds a solar absorption chiller?
A.CPVC cannot be solvent-cemented
B.CPVC is listed only for medical-gas service
C.Collector loops routinely exceed CPVC's continuous temperature rating and can stagnate well above 200°F
D.The 2018 UPC bans all plastic pipe inside buildings
Explanation: Listed CPVC water tube is typically rated near 180°F continuous. A glazed collector sitting in Nevada sun with the pump off can stagnate at 250–400°F, which collapses or ruptures CPVC. Copper or steel is the collector-loop material. PEX or CPVC may appear only on the cooler chilled-water side after the chiller.
10Which joining method is appropriate for Type L copper in a high-temperature solar-cooling collector loop?
A.50/50 tin-lead solder, the same as DWV copper
B.PVC primer and cement
C.Duct tape over a slip fit
D.Brazing or a high-temperature solder/alloy listed for the expected collector fluid temperature
Explanation: Collector fluid regularly exceeds the service temperature of 50/50 solder. FSEC installation practice and UPC material listings require joints rated for the fluid temperature — typically brazing or a high-temperature alloy. Soft lead-tin solder remelts or weakens when a glazed collector stagnates above an absorption-chiller high-limit.

About the NV C-37C Solar Air Conditioning Exam

The Nevada C-37C Solar Air Conditioning Contractor Examination is the official Nevada State Contractors Board trade examination administered by PSI Services LLC. The official exam has 45 scored questions. Passing is 32 of 45 points in 1.5 hours. The examination is open book. Uniform Plumbing Code, 2018 (allowed in center). PSI lists USD 95 for one examination portion and USD 140 if taken with CMS; otherwise USD 95 per trade exam (Candidate Information Bulletin 270, updated 3/25/2026). NSCB requires a separate CMS examination for most new applicants, plus a USD 300 application fee and a USD 600 biennial license fee. This English-language MCQ bank is a study aid, not an official PSI form. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Open Book computer-based multiple-choice. Uniform Plumbing Code, 2018 (allowed in center)

Time Limit

1.5 hours

Passing Score

32 of 45 points

Exam Fee

USD 95 (PSI Services LLC (for the Nevada State Contractors Board))

NV C-37C Solar Air Conditioning Exam Content Outline

22%

Piping

Piping (10 items)

33%

System Design

System Design (15 items)

11%

Pumps and Storage Systems

Pumps and Storage Systems (5 items)

16%

Collectors

Collectors (7 items)

7%

System Valves and Controls

System Valves and Controls (3 items)

11%

Safety

Safety (5 items)

How to Pass the NV C-37C Solar Air Conditioning Exam

What You Need to Know

  • Passing score: 32 of 45 points
  • Assessment: Open Book computer-based multiple-choice. Uniform Plumbing Code, 2018 (allowed in center)
  • Time limit: 1.5 hours
  • Exam fee: USD 95

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NV C-37C Solar Air Conditioning Study Tips from Top Performers

1Distribute study time to the official bulletin 270 content outline (updated 3/25/2026)
2Use only the PSI-listed references; temporary tabs such as Post-it notes are prohibited
3Confirm NSCB experience documentation before scheduling with PSI
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the Nevada C-37C Solar Air Conditioning Contractor Examination?

The official PSI examination has 45 scored questions. Passing is 32 of 45 points within 1.5 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-37C exam cost?

PSI lists USD 95 for one examination portion. Two portions cost USD 140 only if the second portion is CMS. NSCB charges a separate USD 300 application fee and USD 600 biennial license fee.

Is the NV C-37C exam open book?

Yes. PSI lists this examination as open book. Uniform Plumbing Code, 2018 (allowed in center)

Do I still need the CMS examination?

CMS is the required Nevada business-and-law examination. Most new applicants must pass CMS and a trade examination for the requested classification. In most cases you will not retake an exam if you have actively served as a qualified employee in the same classification within the last four years.