CSLB Solar (C-46) Trade Examination — Questions: Not published by CSLB · 210 minutes · Passing score: Not published by CSLB. PrepPass also publishes a complete study guide for this exam as a downloadable book (211 pages, 209 practice questions inside, $24.99).
Test what you know · free, all of it
The same 100 questions, dealt five ways. Pick the one that fits the time you have.
Learn what the questions test
Practice finds the gaps. Reading closes them. The six chapters below are free to read online. The study guide book is a separate download, sold on its own page.
Before you sit
See the questions first
Real items, with the answer marked and the reason written out — the same format as all 100.
What is the basic job of a PV inverter?
Why: DOE describes the inverter as a device that converts direct current, which a solar panel generates, to alternating current, which the grid uses. Storage is the job of batteries.DOE, Solar Integration: Inverters and Grid Services Basics
What is the maximum arresting force a personal fall arrest system may put on a worker wearing a body harness?
Why: Section 1670 limits the maximum arresting force on an employee to 1,800 pounds when used with a body harness. Five thousand pounds is the anchorage strength per employee, not the force on the body.Cal/OSHA Title 8 section 1670(b)
The exam itself
| Questions | Not published by CSLBCSLB says only that “All trade examinations consist of multiple-choice questions.” No count appears in the study guide, the Examinations FAQ, or PSI's candidate bulletin. |
|---|---|
| Time | 210 minutesCSLB: “You will be given 3-1/2 hours to complete each examination.” It is per examination, not per sitting — a candidate taking Law and Business plus a trade exam gets 3-1/2 hours for each. |
| Sections | Planning and Estimating · Solar Panel and Collector Installation · PV System Installation and Commissioning · Solar Thermal Installation · Service, Operation, and Maintenance · Safety |
| Passing score | Not published by CSLBCSLB: “You will be informed at the test site about the percentage of correct answers needed to pass each examination,” and, in Get Licensed to Build Q14, that the percentage “varies for each exam”. Passing candidates are never shown their own score. PrepPass states no passing score for this exam. |
| Our bank | 100 questions · updated September 2026Written from California Contractors State License Board (CSLB) |
| Languages | English |
| Source | California Contractors State License Board (CSLB)Verified 2026-09-24 |
Contractor License Exams
Studying for the CSLB C-46 Solar in order? CSLB C-46 Solar Trade Exam Study Guide (2026) — PDF + EPUB, $24.99 · 14-day refund →
Questions
All 100 questions, the timed mock and the report are free with no sign-up. A free account only adds saving your progress. The study guide book is sold separately, $24.99 one-time; nothing in the practice requires it.
No. Ours is 100 questions in 210 minutes; the real exam is 210 minutes long. Use the mock for stamina and section timing, not as a score predictor.
Not published by CSLB — as published by California Contractors State License Board (CSLB). Confirm the current rule with them before your exam date.
Yes. PrepPass sells CSLB C-46 Solar Trade Exam Study Guide (2026), a PDF + EPUB download, $24.99 one-time; the practice on this page stays free without it. See the study guide →