2026 licensing guide
Electrical (C-10) License
A practical 2026 guide to California's Electrical (C-10) contractor classification: scope, experience, exam focus, and where it ends.
Scope at a glance
Wiring, fixtures, controls, and electrical system work. Always verify the statutory scope with CSLB before contracting.
Requirements and path to licensure
- Document qualifying journey-level experience in the classification
- Submit the correct CSLB application and fees
- Pass required trade and Law & Business exams unless formally waived
- Complete fingerprinting, bond, and license issuance requirements
What the trade exam tends to cover
These are the subject areas most associated with this classification. Exam content is controlled by CSLB and changes over time, so use this as a study map rather than a syllabus.
- Electrical plan and single-line diagram interpretation
- Conductor sizing, overcurrent protection, and voltage-drop considerations
- Grounding and bonding fundamentals
- Raceway, conduit, and wiring-method selection for different environments
- Service and panel equipment installation practices
- Lockout/tagout and electrical safety practices, including arc-flash awareness
Experience that reads as journey-level
Vague experience descriptions are a common reason applications stall. These examples show the level of specificity that demonstrates responsibility rather than attendance.
- Installed and terminated residential and commercial service equipment, panels, and feeders
- Ran conduit and pulled conductors for a tenant improvement, coordinating rough-in with the general contractor
- Troubleshot circuit faults using test instruments and documented corrective work
- Led an electrical crew through rough-in and trim phases and coordinated inspections
Work that usually falls outside this scope
| If the work is | Commonly associated classification |
|---|---|
| Installing HVAC equipment and refrigerant systems rather than the electrical supply to them | Warm-Air Heating, Ventilating and Air-Conditioning (C-20) |
| Low-voltage communication and alarm work depending on scope | A limited specialty or communications classification |
| Structural or multi-trade building work surrounding the electrical scope | General Building (B) |
Scope boundaries are set by CSLB and can depend on project specifics. Confirm the controlling classification before you bid work near a boundary.
Practical examples
Projects involving electrical systems and equipment
Original scenario: a contractor should confirm the classification scope before bidding work that combines specialties.
Scenarios are original educational material, not official CSLB exam questions.
Examinations and license issuance
Examination path
Unless CSLB grants a formal waiver, plan on the universal Law & Business examination plus the Electrical (C-10) trade examination. Confirm the current examination list for your application on the CSLB applicant pages before you schedule.
Issuance path
After examination approval, complete required fingerprinting, bond, insurance or workers’ compensation documentation, fees, and CSLB issuance steps.
Common application mistakes
- Documenting helper-level tasks instead of journey-level electrical installation and troubleshooting
- Assuming the C-10 scope automatically covers all low-voltage and control system work
- Overlooking electrician certification obligations that can apply separately from the contractor license
Frequently asked questions
Does a C-10 license cover low-voltage and control wiring?
Coverage depends on the specific work and how CSLB describes the classification scope. Some low-voltage, communications, or fire-alarm work is treated differently, so verify the scope for your exact service offering.
How is C-10 different from C-20 on an HVAC job?
C-20 is oriented toward the heating, ventilating, and air-conditioning system itself, while C-10 is oriented toward electrical systems and equipment. On many projects both are involved, which is why scope should be defined in the contract.
Is electrician certification the same as a contractor license?
No. California’s electrician certification program and the CSLB contractor license are separate requirements administered differently. Check both if you employ electricians or perform electrical work personally.
Does this classification still require the Law & Business exam?
Most applicants take the universal Law & Business examination in addition to any trade examination. Some applicants qualify for a waiver based on a closely related prior California license, so check waiver eligibility with CSLB before assuming you must sit for both.
Where should I verify current requirements?
Use the official CSLB applicant and classification pages linked on this page. Fees, forms, bond amounts, and examination details change, so treat CSLB as the authority and this guide as study orientation.
Revision history
July 22, 2026
Reviewed structure, official references, examination language, and licensing sequence for the 2026 edition.
Knowledge pathway