What is the California C46 License
What is the California C46 License Exam?
The California C46 exam is a test you need to pass in order to get a Solar Contractor License (C-46) issued by the Contractors State License Board (CSLB) of California.
The C46 exam is actually two separate exams that you must take and pass:
- Trade Exam (above): This section covers the technical knowledge and skills required for solar contractor work.
- Law and Business Exam (here): This section tests your understanding of business and law concepts relevant to running a solar contracting business in California.
Here is a study guide that you might find helpful if you’re interested in taking the California C46 exam:
- The California Contractors State License Board (CSLB) C46 study guide provides a breakdown of the topics covered in the exam and the weights assigned to each section https://www.cslb.ca.gov/resources/studyguides/c46studyguide.pdf
How many questions are on the California C46 Exam?
The exact number of questions on the California C46 exam isn’t publicly available because it consists of two separate exams with unspecified numbers of questions.
The California Contractors State License Board (CSLB) provides study guides that outline the topics covered on the exams but doesn’t specify the number of questions CSLB C46 exam study guide.
What topics are covered on the California C46 exam?
The California C46 exam focuses on your knowledge and skills for solar contractor work. The Contractors State License Board (CSLB) provides a detailed study guide that outlines the major sections and their weights on the exam. Here’s a breakdown of the key areas covered:
- Planning and Estimating (14%): This section assesses your ability to evaluate client needs, assess site feasibility, and develop basic cost estimates for solar projects.
- Solar Panel/Collector Installation (17%): This section tests your knowledge on installing roof mounts for solar collectors and understanding different mounting systems.
- Photovoltaic (PV) System Installation and Maintenance (22%): This is a major section that covers installing, testing, and commissioning photovoltaic systems. It also delves into maintenance procedures for these systems.
- Solar Thermal Installation (7%): This section focuses on installing solar hot water systems, including system components and piping layouts.
- Service, Operation, and Maintenance (15%): This section tests your understanding of servicing, operating, and maintaining both photovoltaic and solar thermal systems. You’ll need to know how to troubleshoot common problems.
- Safety (19%): This crucial section assesses your knowledge of safety regulations and procedures related to solar installations. This includes Cal/OSHA regulations and general safety practices to prevent accidents while working on roofs and with electrical systems.
- Codes and Standards: The exam also assumes familiarity with relevant codes and standards, including the California Building Code, California Electrical Code, and Uniform Solar Energy Code.
By studying these core areas outlined in the CSLB C46 study guide, you’ll be well on your way to preparing for the California Solar Contractor License exam.

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