Master Every Tested Subject. Pass the First Time.
California contractor exams are closed book, so the only thing walking into that testing center with you is what you’ve learned. Our California courses are built from the ground up for that reality — organized subject by subject around the official CSLB test plan, so every minute you study is aimed at what’s actually on the exam.
Prepare for your California Electrical (C-10) Contractor License with 1 Exam Prep's Business & Trade Courses + Application + State Fees + 1st-Year Bond Package. This comprehensive package combines California C-10 Electrical Trade Exam preparation, California Law and Business Exam preparation, business study books, Application Service, state licensing fees, business setup, and first-year contractor license bond premium coverage up to $233.
Electrical contractors perform specialized construction work involving power distribution, wiring, panels, raceways, lighting, motors, electrical equipment, photovoltaic systems, and energy storage. Preparing for the C-10 examination requires knowledge of electrical calculations, installation procedures, code requirements, troubleshooting, and workplace safety.
Our online courses organize these subjects into focused lessons supported by videos, reading chapters, cram sheets, practice questions, and comprehensive final examinations. Beyond exam preparation, this package helps address the administrative and business responsibilities involved in pursuing a California electrical contractor license.
Every tested subject gets the same four layers, in the order that makes the material stick:
Each learning layer reinforces the previous lesson. Students develop an understanding of electrical and business concepts, strengthen their knowledge through reading, review essential information using cram sheets, and apply what they have learned through practice questions.
This method makes electrical calculations, wiring requirements, equipment installation, safety regulations, and contractor business responsibilities easier to organize and review.
Once you’ve worked through every subject, the final phase pulls it all together:
Learn it. Reinforce it. Condense it. Test it. Then prove your knowledge on a full-length final examination. This structured study process helps students identify weaker subjects, strengthen recall, and approach their first examination attempt with confidence.
Complete California C-10 Electrical Contractor Examination Preparation and Licensing Support
Bond Benefit: The $233 maximum applies to the first-year bond premium, not the $25,000 face amount of the standard California contractor license bond. Additional bonds and insurance obligations are separate.
The California Electrical (C-10) Contractor Examination evaluates knowledge of electrical planning, estimating, rough wiring, finish wiring, troubleshooting, maintenance, and occupational safety.
The official CSLB C-10 examination study guide identifies five major categories:
These percentages represent approximate examination content distribution. Planning and Estimating is the largest category at 28%, followed closely by Rough Wiring at 27%.
The examination uses multiple-choice questions with four possible answers and one best answer. Some questions require mathematical computations, and a calculator is provided during testing.
Our C-10 Trade Course organizes preparation around these categories, helping students focus on electrical knowledge relevant to the official examination.
Both the California Electrical (C-10) Trade Examination and California Law and Business Examination are closed book. Reference books, manuals, notes, and other study materials cannot be used during testing.
Because candidates must rely on retained knowledge, preparation emphasizes understanding electrical systems, remembering installation requirements, performing calculations, recognizing safety procedures, and applying contractor business principles independently.
Our online courses reinforce these skills through videos, reading chapters, cram sheets, and practice questions.
Full-length final examinations help students evaluate their knowledge without consulting reference materials. Students can revisit difficult concepts and strengthen their familiarity with examination-style questions before testing.
California Electrical Contractors must obtain the appropriate C-10 specialty contractor license through the Contractors State License Board (CSLB).
The included services support licensing preparation and administration. CSLB determines application eligibility, examination results, and license issuance.
California regulates electrical contractors through the Contractors State License Board. California Code of Regulations, Title 16, Section 832.10 establishes the C-10 Electrical Contractor classification.
The classification covers placing, installing, erecting, or connecting electrical wires, fixtures, appliances, apparatus, raceways, conduits, photovoltaic solar energy systems, battery energy storage systems, and related equipment that generates, transmits, transforms, or uses electrical energy.
Applicants generally must demonstrate qualifying construction experience, submit appropriate CSLB application materials, and satisfy applicable examination requirements unless an authorized exemption or waiver applies.
California requires a contractor license bond for active licensure. The standard contractor license bond has a face amount of $25,000, separate from the premium paid to obtain it.
Electrical contractors must comply with relevant building, electrical, energy, fire safety, and workplace safety requirements. Individual electrician certification obligations are separate from contractor licensing requirements.
Business structures and licensing circumstances can affect additional insurance and bonding obligations. These requirements form part of operating a properly licensed contracting business.
The C-10 trade course is based on the following reference books (not included).
Included Business Books: California Law and Business examination study books are included with this package. The nine C-10 electrical trade reference books listed above are not included.
Preparing for the California C-10 examination requires knowledge of electrical theory, code requirements, calculations, wiring, equipment installation, testing, and workplace safety.
Planning and Estimating: Review electrical drawings, specifications, load calculations, existing systems, equipment selection, and project estimating.
Rough Wiring: Study raceways, electrical panels, conductors, grounding, bonding, clearances, and electrical system layouts.
Finish Wiring and Trim: Understand receptacles, switches, lighting fixtures, motors, equipment connections, labeling, and final installation procedures.
Startup and Troubleshooting: Review electrical measurements, testing instruments, circuit problems, defective components, repairs, maintenance, and system performance.
Safety: Focus on electrical hazards, personal protective equipment, lockout/tagout, safe tools, hazardous materials, and job site protection.
Instructor-led videos introduce these subjects, reading chapters reinforce technical knowledge, and cram sheets condense important information.
Practice questions help students apply electrical calculations and construction principles. Full-length final examinations provide opportunities to evaluate preparation across the major tested subjects.
The California Law and Business Exam Prep Online Course and business study books are included with this package.
Alongside electrical construction knowledge, California contractor applicants must understand the financial, employment, legal, and administrative responsibilities involved in operating a contracting business.
Important Law and Business examination subjects include:
The included Law and Business course follows the same four-layer study method as C-10 trade preparation, helping students review important business concepts through structured instruction and practice.
This comprehensive package extends beyond examination preparation by including important licensing administration and business organization services.
Application Service: Assistance preparing and organizing the appropriate California C-10 contractor license application paperwork.
State Application Fee: Coverage for the applicable initial contractor license application fee.
Initial License Fee: Coverage for the applicable initial California contractor license fee.
Business Setup: Assistance establishing and organizing the electrical contracting business as part of licensing preparation.
These services help coordinate examination preparation with important administrative steps involved in pursuing California electrical contractor licensure.
California requires an appropriate contractor license bond for active licensure. The standard contractor license bond has a face amount of $25,000, while the premium represents the cost of obtaining that bond.
This package includes first-year contractor license bond premium coverage up to $233, helping address an important initial licensing expense.
Bond issuance depends on the surety provider's requirements. Additional bonds may apply under certain business structures or licensing circumstances.
The bond benefit is separate from any required workers' compensation insurance, additional bond obligations, or other business insurance costs.
Modern electrical construction combines traditional wiring and distribution systems with energy production, solar photovoltaic technology, and battery storage.
Electrical planning requires understanding project specifications, electrical loads, conductors, equipment selection, and installation requirements.
Rough wiring involves raceways, electrical panels, conductors, grounding, bonding, and equipment connections. Finish wiring includes devices, fixtures, motors, and completed electrical connections.
Energy production and storage topics require familiarity with photovoltaic equipment, electrical system integration, batteries, and related safety considerations.
Troubleshooting involves understanding circuit behavior, using appropriate test instruments, recognizing defective components, and evaluating electrical system performance.
Our course connects these subjects through organized lessons designed to reinforce technical knowledge and examination readiness.
At 1 Exam Prep, we combine structured examination instruction with licensing assistance to make preparing for California contractor licensure more manageable.
Our C-10 Trade and California Law and Business courses divide electrical calculations, installation procedures, safety, business finances, contracts, and other important subjects into focused lessons.
Instructor-led videos explain important concepts, reading chapters reinforce understanding, and cram sheets condense essential information for convenient review.
Practice questions with detailed explanations help students apply knowledge and recognize subjects requiring additional attention. Master cram sheets and full-length practice final examinations provide comprehensive review opportunities.
Beyond educational preparation, the package includes business study books, Application Service, applicable state licensing fees, business setup assistance, and first-year bond premium coverage up to $233.
Strengthen your electrical construction knowledge, prepare for California contractor business responsibilities, and pursue your C-10 licensing goals with 1 Exam Prep.
The package includes C-10 Electrical Trade Exam preparation, California Law and Business Exam preparation, business study books, Application Service, applicable state application and initial license fees, business setup assistance, and first-year contractor bond premium coverage up to $233.
Yes. The California Law and Business online course and business study books are included alongside the C-10 Electrical Trade Course.
California Law and Business study books are included. The nine C-10 trade reference books listed in the Reference Books section are not included. The courses provide structured preparation for closed-book contractor examinations.
Yes. Both examinations are closed book. Candidates cannot use reference books, manuals, notes, or other study materials during testing.
The examination covers Planning and Estimating, Rough Wiring, Finish Wiring and Trim, Startup, Troubleshooting and Maintenance, and Safety.
Yes. The examination includes energy production and storage topics involving photovoltaic systems, generators, batteries, and related electrical equipment.
Yes. Application Service and applicable initial state application and contractor license fees are included.
Yes. The package includes first-year contractor license bond premium coverage up to $233. This amount applies to the premium, not the $25,000 face amount of the standard bond.
Yes. Business setup assistance is included to support establishing and organizing the electrical contracting business during licensing preparation.
No. Workers' compensation insurance, additional bonds required for particular licensing circumstances, and other business insurance costs are separate from the included first-year standard contractor bond benefit.
Each subject includes an instructor-led video, reading chapter, cram sheet, and practice questions with explanations. Master cram sheets and full-length final examinations provide comprehensive review.
No. Applicants must satisfy applicable CSLB experience, examination, application, bonding, insurance, and license issuance requirements. Examination preparation and licensing assistance do not guarantee approval.
1 Exam Prep combines electrical trade instruction, California Law and Business preparation, business study books, Application Service, state licensing fee coverage, business setup assistance, and first-year bond premium support in one comprehensive package.
Prepare for your California Electrical (C-10) Contractor License with 1 Exam Prep's Business & Trade Courses + Application + State Fees + 1st-Year Bond Package. Build your electrical knowledge, organize your licensing requirements, and take the next step toward your contracting goals.
Find answers to common questions about our exam prep courses.
No questions match your search. Try a different keyword or category.