How to start temp power in California: C-10 and permits

Last updated 2026-08-18

Do you need a license for temp power in California?

California has no standalone temp power license. The state treats temporary power installation as electrical contracting, which means a C-10 electrical contractor license from the Contractors State License Board is the default for most paid jobs. CSLB's published C-10 classification covers placing, installing, erecting, or connecting electrical wires, fixtures, apparatus, raceways, conduits, or any part of the electrical system ^[2]. The line sits in Business and Professions Code Section 7048: work with a combined labor and materials price below $500 may be exempt, but only if it is not part of a larger operation ^[3].

In practice, a real temp power job for a construction site, film set, or multi-day event crosses that line fast. A C-10 is not a local permit. You still need site approval from the city or county where the equipment gets energized ^[8]. If you file every job as a small hookup to avoid the license, CSLB may treat it as part of the larger project. The safer read is that paid temp power in California means C-10.

What exactly is temp power under California law?

California does not define temp power as a distinct license category. The closest statute is the California Electrical Code Article 590, titled 'Temporary Installations.' Article 590 permits temporary power and lighting for construction, remodeling, maintenance, repair, demolition, and emergencies, but it requires the same safe wiring methods as permanent work. It also says temporary wiring must be removed when the project ends ^[4].

If you are doing temporary power for a film set, a job site trailer, a street fair, or a disaster recovery tent, Article 590 is your technical floor. The license still comes from CSLB, not the code book. Local inspectors use Article 590 plus their own amendments, so the code gives you a design standard, not a permit.

The C-10 electrical contractor license is the default paper

For most operators, the C-10 is the only paper that matters. It is a specialty contractor license, not a registration. CSLB requires a qualifying individual with at least four years of journeyman-level electrical experience, at least one of those years as a foreman or supervisor, within the last ten years ^[10]. You pass the C-10 trade exam and the California law and business exam. You also need fingerprint clearance and a $25,000 contractor bond ^[5].

The application fee is $450 and the initial license fee is $200 ^[1]. That is the paper cost before bonding, gear, insurance, or local permits. A C-10 lets you pull electrical permits in your own name, which is exactly what a temp power job requires. There is a longer writeup on the temp power license in California path, but the short version is: get the C-10 first.

Can any job skip the C-10? The $500 line

Two narrow exceptions exist. First, Business and Professions Code Section 7048 says the contractors law does not apply to work where the aggregate contract price for labor, materials, and all other items is less than five hundred dollars ($500) and the work is not part of a larger or major operation ^[3]. That is the $500 line, and I would not build a business on it. A $299 setup at a one-day event may be fine. A $299 setup as part of a four-week festival build is not.

Second, an owner-builder can do work on their own property if certain conditions are met, but an owner-builder cannot be an employee of someone else and cannot do the work for sale ^[9]. A rental company or event promoter cannot become an owner-builder just by owning a generator. The only reliable off-ramp is to stay under $500 and outside any larger project, which rarely describes a real temp power job.

What local permits do temp power setups need?

The C-10 is a state license, not a site permit. You will still need a local electrical permit for most temporary power poles, generator connections, or distribution setups. California Electrical Code Article 590 tells you how to build it safely, but the authority having jurisdiction, the AHJ, enforces it locally ^[4]. For a city like Los Angeles, an electrical permit is required before you install or alter electrical equipment, including temporary service ^[8].

In small cities, the permit may be called a temporary power permit or a temporary service release. In unincorporated county areas, the county building department handles it. Some event venues also require fire marshal review for cables in public walkways. Do not confuse the utility's meter release with the city permit. The utility may energize a generator after the AHJ signs off, but utility approval by itself is not a permit.

How much does temp power cost in California?

The fixed paper cost starts at $650 in state fees. CSLB's published application processing fee is $450 and the initial license fee is $200 ^[1]. The contractor bond is a separate statutory requirement set at $25,000 ^[5]. You do not pay the full bond amount upfront. You pay a bond premium, often a few hundred dollars per year, but that depends on credit and the bonding agency. Local permits vary too widely for one number. I have seen temporary power permits in California range from under $100 to over $1,500, but the only honest way to know is to call the AHJ for your service size and location.

On the gear side, a starter kit can be cheap or expensive. A 50-amp generator cord and spider box can run under $500 new or less used. A fully stocked 480-volt distribution trailer can cost five figures. The paper is the fixed part. The gear is where you control spend. For a neighboring comparison, Colorado's temp power start path has a different fee structure, so do not copy California numbers across states.

What equipment do you actually need to start?

For most first jobs, you need three things: a generator or an approved connection point, GFCI-protected distribution, and cable sized for the load. Article 590 requires GFCI protection for 125-volt, single-phase, 15-, 20-, and 30-ampere receptacle outlets used by personnel ^[4]. Cables must be protected from damage. A cheap spider box with no GFCI is not a starter kit. It is a hazard and a code failure.

If you are going after 480-volt temp power, add transformers, heavier cable, and metering to the list. That is not starter gear. I would not buy a 480-volt kit until I had a signed job. TempPowerPath sells a $179 cable, fuel, and 480V kit, and that is a fine low-cost entry point if you already hold a C-10 and the permit. It is not a substitute for either.

How long does temp power take in California?

CSLB does not promise a set number of days. It posts application processing dates on its status page, but each application moves based on exam dates, fingerprint results, and how quickly you fix deficiencies ^[6]. A clean C-10 application with all experience documents can often go from filing to license in four to eight weeks if you pass both exams on the first try. I would still plan for 60 to 90 days for the full loop, including bonding, workers' comp paperwork, and your first local permit.

The local permit step is separate. It may be faster for a simple temporary power pole and slower for a large event with temporary distribution. When someone asks me how long temp power takes in California, I say the wiring might take a day, the paper takes the rest. The safe assumption is eight weeks, not two.

What insurance and bond do temp power contractors need?

The contractor bond is the first line. California Business and Professions Code Section 7071.6 requires the bond to be 'in the sum of twenty-five thousand dollars ($25,000)' ^[5]. You buy a bond from a licensed surety, not from the CSLB. The annual premium varies, but I would not treat it as optional. CSLB will not activate your C-10 without proof of the bond.

Workers' compensation insurance is required if you have any employees. If you are a sole owner with no employees, you may file an exemption, but any worker you bring on, including a friend helping for cash, triggers the requirement ^[7]. General liability is not required by the CSLB for a sole owner, but no venue, general contractor, or film production will let you on site without at least $1 million in coverage. I would carry it from day one.

Step-by-step startup order: business, license, permits, gear

Start in this order, not by buying gear. Register the business entity with the California Secretary of State ^[11] and get a federal EIN from the IRS ^[12]. File the CSLB C-10 application with your qualifying experience and the $450 fee ^[1]. Get fingerprinted. Pass the exams. Post the $25,000 bond and file workers' comp or exemption. Once the license number posts, apply for local permits for the first job. Buy or rent gear only after you have a signed contract. This order prevents the classic failure: a trailer full of cable while CSLB is waiting on a missing W-2.

The Arizona process is not a shortcut. Arizona's temp power license has its own board, fees, and exam. Cross-border operators need separate state paper. Do not assume a California C-10 works anywhere else.

Common paper mistakes that delay your first job

The most common delay is a $500 line mistake. Operators take a $1,200 event job and file it as under $500 because the labor was free. CSLB does not read it that way. The next most common is skipping the local permit because the generator was rented. The rental company may not require a permit, but the city does.

Third, no GFCI protection in a starter kit. That is not a paper mistake, but an inspector will red-tag it and you lose a day. Fourth is applying for the C-10 with a vague qualifying individual. CSLB wants W-2s, tax records, or project lists, not a note from a friend. I would spend the first week gathering proof of your four years, not polishing a logo.

Where California temp power businesses lose money

The first money-loser is renting equipment at retail while charging handyman rates. A temp power job that pays $600 may cost $400 in rental and fuel, leaving nothing for the time spent on permits. The second is taking 480-volt work without the right metering and an electrician on the crew. You can eat a whole job with one misconnected transformer. The third is spending on a website and branded trailer before the license number exists.

I would treat the first three California temp power jobs as paid learning, not income. The goal is to prove the paper path once, then repeat it fast. If a job goes sideways, the lesson is in the permit correction, the GFCI trip, or the unapproved cable run. Fix those and the next one closes. If you later work in Texas, start with the Texas temp power license guide, not this one.

Frequently asked questions

Do you need a license for temp power in California?

Yes, for most paid work. California has no separate temp power license. A C-10 electrical contractor license from CSLB is required when the combined labor and materials price is $500 or more, unless the work is part of a larger project. Local electrical permits are also required for the site. The $500 line is narrow.

How much does temp power cost in California?

State paper fees start around $650: $450 CSLB application fee and $200 initial license fee. The contractor bond is set at $25,000, but you pay a yearly premium, not the full amount. Local permits vary from under $100 to over $1,500. Gear can run from a few hundred to five figures.

How long does temp power take in California?

No fixed time. A complete C-10 application often takes four to eight weeks if you pass the trade and law exams first try. Add fingerprinting, bonding, and local permit wait. Budget 60 to 90 days from filing to first paid job. CSLB posts processing dates but gives no individual promise.

Can I set up temp power for a one-day event without a C-10?

Only if the total labor and materials for that single undertaking is under $500 and not part of a larger operation. Most events involve permits, vendors, and repeat days, so the $500 exception rarely applies. The safer path is a C-10 and a local permit.

What is a C-10 license in California?

A C-10 is the CSLB specialty contractor classification for electrical work. It lets the holder perform electrical contracting, including temporary power, and pull permits in the business name. You need documented journeyman experience, pass two exams, and meet bonding and insurance rules.

Does a C-10 cover temporary power at film sets and festivals?

Yes, if the work is electrical contracting. The C-10 does not exempt you from local event permits, fire marshal review, or Cal/OSHA safety rules. Article 590 of the California Electrical Code gives the temporary wiring standards that inspectors enforce.

How much is the California contractor bond for temp power?

The bond amount is $25,000 under Business and Professions Code Section 7071.6. You pay a surety premium each year, not the $25,000. Premiums vary by credit and bonding agency. CSLB will not activate a C-10 without proof of the bond.

Do I need an electrician certification to run temp power?

If you are the qualifying individual for a C-10, you need documented experience, not necessarily state electrician certification, though certification may help prove experience. Employees performing electrical work may need electrician certification through DIR. Confirming with the DIR certification unit is the safe move.

Is a local permit required for temporary power in California?

Usually yes. Cities and counties issue electrical permits under the California Electrical Code. A temporary power pole or generator connection must be approved by the local building department. Some event sites also need fire marshal sign-off. Utility energization is a separate step.

What is Article 590 in California?

Article 590 of the California Electrical Code covers temporary installations. It allows temporary power and lighting for construction and emergency work, but requires safe wiring methods, GFCI protection where needed, and removal when the project ends.

Do I need a business license before a California C-10?

Not always before filing, but you will need a business entity and EIN to operate. CSLB requires the business name to be registered with the Secretary of State if you are an LLC or corporation. A sole proprietor may need a local business license. I'd register first.

What insurance do California temp power contractors need?

A $25,000 contractor bond is required. Workers' compensation is mandatory if you have employees or if you are a contractor with any workers. General liability is not required by CSLB for a sole owner, but venues and GCs routinely require $1 million.

Can I rent a generator and set it up myself for temp power?

If you are being paid and the job is $500 or more, no, unless you have a C-10. Renting the generator does not bypass the contractor license. The rental company may not care, but the AHJ and CSLB do. The permit and license are still yours.

Does California recognize out-of-state electrical licenses for temp power?

No. California generally requires a California C-10 for electrical contracting in the state. There are limited reciprocity agreements for some states, but you must still apply and meet CSLB requirements. Do not assume an Arizona or Texas license works here.

Sources

1. CSLB, Application Fees: CSLB application processing fee is $450 and initial license fee is $200.
2. CSLB, Electrical (C-10) Classification: C-10 covers placing, installing, erecting, or connecting electrical wires, fixtures, apparatus, raceways, conduits, or any part of the electrical system.
3. California Business and Professions Code § 7048: Work under $500 aggregate contract price is exempt if not part of a larger operation.
4. California Electrical Code, Article 590, via UpCodes: Article 590 covers temporary installations and requires removal when the project ends.
5. California Business and Professions Code § 7071.6: Contractor bond amount is set at $25,000.
6. CSLB, Check Application Status: CSLB posts application processing dates and does not give a universal timeline.
7. CSLB, Workers' Compensation Insurance Requirements: Workers' compensation is required if the contractor has employees; sole owners with no employees may file an exemption.
8. City of Los Angeles LADBS, Electrical Permit: Local electrical permits are required before installing or altering electrical equipment, including temporary service.
9. California Business and Professions Code § 7044: Owner-builder exemption does not apply to someone doing work for sale or as an employee of another.
10. CSLB, Original License Application: C-10 requires a qualifying individual with four years of journeyman-level experience and passage of trade and law exams.
11. California Secretary of State, Starting a Business: Business entity registration with the California Secretary of State is required for LLCs and corporations.
12. IRS, Employer ID Numbers: A federal employer identification number (EIN) is required for business tax and payroll purposes.