Nevada Solar Contractor (C-37) Exam Book Package

Prepare for the Nevada Solar Contractor (C-37) examination with an exam book package built around the code reference and technical study materials used for solar contracting preparation. This package includes the Uniform Plumbing Code, 2018, Code of Federal Regulations - 29 CFR Part 1926 (OSHA), and the Solar Water and Pool Heating Design and Installation Manual.

The Nevada C-37 Solar Contractor examination is an open-book test. The Uniform Plumbing Code, 2018 is the exam-room-approved reference included in this package. The OSHA construction safety reference and the Solar Water and Pool Heating Design and Installation Manual are included for study but are not allowed into the trade examination room.

The Nevada C-37 examination contains 45 questions, allows 1.5 hours for completion, and requires 32 correct answers to pass. The examination covers piping, system design, pumps and storage systems, collectors, system valves and controls, and safety.

The Nevada C-37 Solar Contractor classification covers the design, fabrication, and installation of systems that collect solar energy to heat and cool water, air, and chemicals. Candidates should be prepared for both practical system-design questions and code-based questions involving piping and related plumbing requirements.

Solar thermal work combines several technical areas. Candidates may need to understand collector layouts, piping arrangements, pumps, storage, valves, controls, freeze protection, system balance, heat transfer, and jobsite safety. The Uniform Plumbing Code supports code navigation, while the Solar Water and Pool Heating Design and Installation Manual supports the practical design and installation concepts that make up much of the examination.

This Nevada C-37 exam book package is designed for candidates who want the exam-room code reference together with the study-only resources needed to build broader trade knowledge before test day.

What You Get

• Uniform Plumbing Code, 2018 — exam-room-approved reference supporting plumbing, piping, materials, supports, connections, valves, and related code requirements applicable to solar thermal systems.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA) — study reference supporting construction safety, personal protective equipment, fall protection, ladders, electrical hazards, tools, and other jobsite safety topics.
• Solar Water and Pool Heating Design and Installation Manual — study reference supporting solar system design, collectors, piping, pumps, storage, controls, solar water heating, pool heating, and installation practices.

Exam Details

The Nevada C-37 Solar Contractor examination contains 45 questions. Candidates are allowed 1.5 hours to complete the exam and must answer 32 questions correctly to pass.

The examination content is divided into the following subject areas:

• Piping: 10 questions
• System Design: 15 questions
• Pumps and Storage Systems: 5 questions
• Collectors: 7 questions
• System Valves and Controls: 3 questions
• Safety: 5 questions

System Design is the largest subject area with 15 questions. Candidates should spend a substantial portion of their preparation on system configuration, sizing concepts, circulation, storage, heat-transfer relationships, collector arrangements, controls, and system performance.

Piping represents 10 questions. This area can involve pipe materials, fittings, supports, routing, sizing concepts, expansion, insulation, joining methods, and other installation requirements.

Collectors accounts for 7 questions. Candidates should understand the basic characteristics and installation considerations of solar thermal collectors, including arrangement, orientation, circulation, and the relationship between collector type and system application.

Pumps and Storage Systems represents 5 questions, Safety represents 5 questions, and System Valves and Controls accounts for 3 questions. Although these categories are smaller, together they represent a meaningful portion of the exam and should not be neglected.

Open Book Test

The Nevada C-37 Solar Contractor examination is an open-book test.

The reference included in this package that is allowed into the trade examination is:

• Uniform Plumbing Code, 2018

The following references are included for study but are not allowed into the trade examination room:

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
• Solar Water and Pool Heating Design and Installation Manual

Candidates should use the Uniform Plumbing Code regularly throughout their preparation rather than waiting until the final days before the examination. Repeated practice can help build familiarity with chapter organization, definitions, tables, piping provisions, materials, supports, connections, and other code requirements.

With 45 questions in 1.5 hours, candidates have about two minutes per question on average. Efficient code navigation matters. Broad searches through the entire book can consume valuable time, so candidates should first identify the subject of the question and then navigate to the most likely section.

For questions involving pipe materials, supports, connections, valves, or other plumbing requirements, the Uniform Plumbing Code may provide the needed answer. Questions involving system design, collector performance, solar thermal principles, or safety may rely more heavily on retained knowledge developed before test day.

Licensing Steps

1. Confirm the C-37 classification. Make sure the Nevada Solar Contractor classification matches the type of solar thermal contracting work the business intends to perform.
2. Identify the qualifying individual. The contractor application must identify the individual responsible for satisfying the applicable experience and examination requirements.
3. Prepare qualifying experience documentation. Nevada generally requires the qualifying individual to demonstrate applicable experience in the requested classification.
4. Submit the Nevada contractor license application. Complete the required application and supporting documentation.
5. Receive examination eligibility. After the application and experience requirements are addressed, the qualifying individual can proceed with the required testing process.
6. Prepare for the C-37 trade examination. Study piping, system design, pumps, storage systems, collectors, valves, controls, and safety.
7. Practice Uniform Plumbing Code navigation. Use the 2018 UPC regularly during study sessions so code lookups become more efficient.
8. Prepare for Nevada Business and Law. Nevada qualifying individuals are generally required to pass the applicable contractor business and law examination unless a waiver applies.
9. Complete required examinations. Take the applicable trade and business examinations.
10. Complete remaining licensing requirements. Finish the additional applicable requirements associated with contractor license issuance.

State Requirements

Nevada identifies C-37 as the Solar Contractor classification. A person holding this classification may design, fabricate, and install systems for the collection of solar energy to heat and cool water, air, and chemicals.

The classification is focused on solar thermal systems rather than photovoltaic electrical generation. Candidates should therefore concentrate on thermal collection, fluid circulation, heat transfer, piping, storage, pumps, controls, and related installation practices.

Nevada also recognizes separate C-37 solar subclassifications for specific types of work, including solar water heating, solar space heating, solar air-conditioning, and solar pool heating. The primary C-37 classification covers a broader range of solar thermal work.

The C-37 trade examination is one part of Nevada contractor licensing. Applicants must also satisfy applicable experience, application, examination, financial, business, and other licensing requirements before a contractor license is issued.

Nevada generally requires a qualifying individual to have at least four full years of applicable experience within the fifteen years immediately preceding the application. The experience must be at the journeyman, foreman, supervisor, or contractor level in the classification being requested.

Reference Books

• Uniform Plumbing Code, 2018
  This exam-room-approved reference supports preparation involving piping systems, pipe materials, fittings, supports, valves, connections, water systems, and other plumbing code requirements applicable to solar thermal installations.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This study-only reference supports preparation involving construction safety, personal protective equipment, fall protection, ladders, electrical hazards, material handling, tools, and other jobsite safety requirements.
• Solar Water and Pool Heating Design and Installation Manual
  This study-only reference supports preparation involving solar water heating, solar pool heating, collector selection, piping layouts, circulation, pumps, storage, controls, system design, and solar thermal installation practices.

Exam Room Approved Books

• Uniform Plumbing Code, 2018
  This is the exam-room-approved reference included in the Nevada Solar Contractor (C-37) Exam Book Package. Candidates should become familiar with its organization and practice locating piping, material, support, connection, valve, and related plumbing requirements efficiently.

Test Information and Study Materials

A strong Nevada C-37 study plan should begin with System Design because it represents 15 of the 45 examination questions. Candidates should understand how collectors, pumps, piping, storage, valves, and controls work together as a complete solar thermal system.

Review common system layouts and understand the movement of heat from the collector to the storage or load side of the system. Candidates should be able to recognize how circulation methods, component placement, and control strategies affect operation.

Piping is another major topic with 10 questions. Review pipe materials, fittings, joining methods, supports, expansion, insulation, routing, and the relationship between system temperature and material selection.

The Uniform Plumbing Code, 2018 should be used for code-based piping preparation. Practice locating requirements involving piping materials, supports, connections, fittings, and related installation provisions.

Do not depend only on tabs or remembered page numbers. Learn how to use the index and table of contents so you can locate information even when a question uses terminology that differs from your study notes.

Collectors represents 7 questions. Candidates should understand the role of solar collectors, how they absorb solar energy, and how different collector arrangements can affect flow and heat transfer.

Review collector placement, orientation, mounting concepts, circulation, connections, and practical installation considerations. Understand how collector selection relates to solar water heating, pool heating, space heating, and other thermal applications.

Pumps and Storage Systems accounts for 5 questions. Candidates should understand the purpose of pumps, circulation requirements, storage tanks, heat exchangers, and the relationship between storage capacity and system operation.

Review how pumps move heat-transfer fluids through the system and how storage allows solar energy collected during one period to be used later.

System Valves and Controls represents 3 questions. Review shutoff valves, check valves, balancing concepts, temperature controls, differential controls, pressure-related components, and other devices that influence safe system operation.

Safety accounts for 5 questions. Use the OSHA 29 CFR Part 1926 reference to study construction safety before the exam. Because the OSHA book is not allowed into the examination room, candidates should build retained knowledge of common jobsite hazards and safe work practices.

Solar thermal work can involve roof access, ladders, lifting, piping tools, hot surfaces, electrical control components, pressure, and outdoor working conditions. Safety preparation should reflect the practical hazards associated with installing and servicing these systems.

The Solar Water and Pool Heating Design and Installation Manual should be used as a practical study guide across multiple exam categories. It can help candidates connect collector behavior, piping layouts, pumps, storage, valves, and controls into a complete system.

Because this manual is not allowed into the trade examination, use active-recall study methods. After reading a system-design topic, close the book and explain the design or installation sequence from memory.

For example, review a solar water heating layout and then explain the path of fluid from the collector through the pump, storage, heat exchanger, and control system without looking at the book.

Practice identifying the purpose of each major component. Candidates should understand not only what a pump, valve, storage tank, collector, or controller is, but also why it is placed in a particular location and what happens if it fails or is incorrectly installed.

Freeze protection should be included in preparation because solar thermal piping and collectors can be exposed to outdoor conditions. Candidates should understand general concepts such as drainback arrangements, appropriate heat-transfer fluids, and system design considerations used to protect equipment.

Heat transfer is another useful study area. Understand how heat moves from the collector to the working fluid and then to storage or the final load.

System balance should also receive attention. Proper flow through collectors affects system performance, so candidates should understand the purpose of balanced piping arrangements and appropriate circulation.

Insulation is important because uninsulated piping can lose heat before it reaches storage or the load. Candidates should understand why solar thermal piping is insulated and why outdoor insulation must be suitable for environmental exposure.

Expansion should be considered in hot solar piping systems. High temperatures can cause piping to expand, so practical installations must account for movement, supports, and material limitations.

Timed practice is important because the examination allows 1.5 hours for 45 questions. Candidates should practice answering technical questions quickly and using the Uniform Plumbing Code only when a code lookup is necessary.

A useful strategy is to divide study sessions according to the exam outline. Spend the most time on System Design and Piping, followed by Collectors, Pumps and Storage Systems, Safety, and System Valves and Controls.

Once each area becomes familiar, move into mixed-question practice. This helps simulate the examination, where questions can shift from code requirements to system design, collectors, pumps, or safety without warning.

When a practice question is missed, identify the reason. The problem may be weak trade knowledge, unfamiliar terminology, slow code navigation, or difficulty understanding the relationship between system components.

Correcting the underlying weakness is more useful than memorizing one answer. The goal is to build a working understanding of solar thermal systems that can be applied to unfamiliar exam questions.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Nevada C-37 Solar Contractor candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation when applicable, and confidence-building study structure.

This exam book package combines the exam-room-approved Uniform Plumbing Code, 2018 with the Solar Water and Pool Heating Design and Installation Manual and OSHA 29 CFR Part 1926 for broader preparation.

Reference-navigation practice helps candidates become more comfortable locating piping, materials, fittings, supports, valves, and other plumbing requirements efficiently in the UPC.

Trade-focused preparation helps candidates build stronger knowledge of collectors, pumps, storage, piping, solar thermal system design, valves, controls, and safety.

Practice-oriented review can help identify whether missed questions result from weak system-design knowledge, confusion about collector layouts, slow code navigation, unfamiliarity with pump and storage concepts, or safety weaknesses.

The goal is to help candidates approach the Nevada C-37 Solar Contractor examination with stronger solar thermal knowledge, better code familiarity, improved reference-navigation skills, and a structured study routine without guaranteeing a passing score or licensing approval.

How many questions are on the Nevada C-37 Solar Contractor exam?

The Nevada C-37 Solar Contractor examination contains 45 questions.

How much time is allowed for the C-37 examination?

Candidates are allowed 1.5 hours to complete the examination.

How many correct answers are required to pass?

Candidates must answer 32 questions correctly to pass the Nevada C-37 examination.

Is the Nevada C-37 Solar Contractor exam open book?

Yes. The Nevada C-37 Solar Contractor examination is an open-book test.

Which book is allowed into the Nevada C-37 exam?

The Uniform Plumbing Code, 2018 is the exam-room-approved reference included in this package.

Is OSHA 29 CFR Part 1926 allowed into the exam?

No. OSHA 29 CFR Part 1926 is included for study but is not allowed into the trade examination room.

Is the Solar Water and Pool Heating Design and Installation Manual allowed into the exam?

No. The Solar Water and Pool Heating Design and Installation Manual is included for study but is not allowed into the trade examination room.

What is the largest subject on the C-37 exam?

System Design is the largest examination category with 15 questions.

How many piping questions are on the C-37 exam?

Piping accounts for 10 questions.

How many collector questions are on the exam?

Collectors accounts for 7 questions.

Does the exam cover pumps and storage systems?

Yes. Pumps and Storage Systems accounts for 5 questions.

Does the exam cover safety?

Yes. Safety accounts for 5 questions.

What work does the Nevada C-37 classification cover?

The C-37 classification covers the design, fabrication, and installation of systems for collecting solar energy to heat and cool water, air, and chemicals.

Is the Nevada C-37 license focused on photovoltaic electrical systems?

The C-37 classification is focused on solar thermal systems involving the collection of solar energy for heating and cooling water, air, and chemicals.

Should I practice using the Uniform Plumbing Code before test day?

Yes. Regular practice can help candidates locate piping, materials, fittings, supports, valves, and other relevant requirements more efficiently during the open-book examination.

Does this package guarantee that I will pass the Nevada C-37 exam?

No. This package provides exam and study references designed to support organized preparation. Examination results depend on each candidate's experience, solar thermal knowledge, study, code-navigation skills, and performance on test day.