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Checked against primary sources 2026-09-05

The dwelling only certification

California Residential Electrician Exam: 80 Questions

Residential Electrician is the certification for someone whose hours are in houses. The exam is 80 questions, 3 hours 30 minutes, 70 percent to pass, and the hours behind it are 4,800 rather than 8,000. Here's the paper, the money and the route.

Test yourself: thirty free questions, timed

On this page
  1. What the Residential Electrician certification covers
  2. The numbers: 80 questions, 3 hours 30 minutes, 70 percent
  3. The 4,800 hours behind it
  4. The 30 days and the one year
  5. What the 80 questions cover
  6. The books, and why you can't bring your own
  7. Who runs it and how you book
  8. What it costs
  9. If you don't pass
  10. How to prepare for it
  11. Questions people ask
  12. What this page cites

What the Residential Electrician certification covers

Residential Electrician is one of the five certifications the Electrician Certification Unit issues, and CCR Title 8 section 290.1 is the section that defines it alongside Certified Electrician and General Electrician.

It's a narrower credential than General Electrician, and the hours rule shows why: nearly all of the qualifying work is dwelling wiring. If your career is in houses and tract work, this is the shorter road. If you expect to be on commercial or industrial jobs, read the General Electrician exam page first, because the General certification covers both.

The numbers: 80 questions, 3 hours 30 minutes, 70 percent

The bulletin and the DIR test information page both give 80 questions, 3 hours 30 minutes and a minimum of 70 percent. The older FAQ says 3 hours, and where the pages disagree we follow the newer two, which agree with each other.

Eighty questions in 210 minutes works out at about two and a half minutes each. The same arithmetic as the General paper, on a shorter clock.

The 4,800 hours behind it

Section 291.1 asks for 4,800 hours worked for a C-10 electrical contractor. Unlike the General certification, one area is enough, and the ceilings look like this: 300 hours of stock room and material handling, 4,800 residential wiring, 150 voice data video installation, 300 underground conduit, 600 troubleshooting and maintenance, 600 finish work and fixtures, 300 fire and life safety.

Read the residential wiring line carefully. It is capped at the full 4,800, so a person who has only ever wired houses qualifies on that one category alone.

An electrician trainee applies with proof of completing the approved curriculum for the classification being sought, under section 291.2(g), and is certified only after passing the exam and showing the experience.

The 30 days and the one year

The Division has to respond on your eligibility within 30 days of getting a complete application. After that you have one year from the date of the eligibility notice to sit, and the clock doesn't stop because you're busy.

No application gets processed at all unless every required fee comes with it, so a short check sends the whole packet back. Employment history is documented with Social Security Administration Form SSA-7050, which takes its own time to arrive, so start it before you fill anything else in.

What the 80 questions cover

The published weighting is close to the General paper, with a point shifted from safety into system requirements.

Installation is again two thirds of the paper. On a dwelling exam that means receptacle placement, circuit requirements for the rooms the code names, grounding and bonding at the service, and the load calculation for a house.

The books, and why you can't bring your own

This exam is open book in an unusual way. The books are inside the testing system, and the bulletin is blunt that you may not bring or use your own reference materials.

Every candidate gets NFPA 70, the National Electrical Code, 2023 Edition, NFPA 70E, Standard for Electrical Safety in the Workplace, 2024 Edition, and the Cal/OSHA Pocket Guide for the Construction Industry, updated 2022.

That matters more than it sounds. You can't tab a book you've never touched, so the skill being tested is finding a rule in an electronic copy under a clock. Book rules walks through what that changes about how you study.

Who runs it and how you book

The Division of Labor Standards Enforcement runs the certification. The exam itself is delivered by CPS HR Consulting through Pearson VUE for exams on or after June 1, 2026. Once the Electrician Certification Unit finds you eligible, an Authorization to Test email arrives from PearsonVUEConfirmation@e.pearson.com and you book your own seat.

You can schedule online any hour of the day at the Pearson VUE ECU page or by phone. The two published phone numbers disagree by one digit: the Candidate Information Bulletin prints (866) 302-9666 and the DIR test information page prints 866-302-9266. If one fails, try the other, and CPS HR answers at ecuexams@cpshr.us or 855-298-4917.

We're an independent study site. We don't run the exam, we don't process applications, and nothing here is approved by DIR or by the vendor.

What it costs

The regulation sets the pieces: a $75 initial application fee and $100 to take or retake the examination, under CCR Title 8 section 292.0. The application instructions print the packaged totals, which is what you actually write the check for.

Checks are payable to the DIR Electrician Certification Fund. The bulletin adds a line worth reading twice: exam payments are neither refundable nor transferable.

If you don't pass

Sixty days from the day you sat it, then a retest application and another $100. That is the same rule for all five certifications, and the retakes page covers the form and the wait.

A failure doesn't touch your hours. What it costs you is the fee and two months.

How to prepare for it

Weight your study the way the outline is weighted. Two thirds installation means dwelling branch circuits, receptacle spacing, GFCI and AFCI locations, and the service.

Our free sets that map onto this paper most directly are receptacle spacing, branch circuits, GFCI and AFCI locations, grounding electrodes and load calculations, all on the question hub. Run the timed practice test first so you know which of those to open.

Questions people ask

How many questions are on the California Residential Electrician exam?

Eighty, with 3 hours 30 minutes of testing time and a minimum of 70 percent to pass. Those figures come from the Candidate Information Bulletin and the DIR test information page.

How many hours do I need for the Residential Electrician certification?

Four thousand eight hundred hours worked for a C-10 electrical contractor, under CCR Title 8 section 291.1. One qualifying area is enough, and residential wiring alone can carry the whole total.

Can I upgrade from Residential to General Electrician later?

The regulation sets separate hour totals for each certification, and General Electrician asks for 8,000 hours across two or more areas. Nothing on the DIR pages we read describes a shortcut between them, so plan on meeting the General rule in full.

Is the Residential exam easier than the General exam?

It's shorter and narrower, not easier. The pass mark is the same 70 percent and the installation weighting is the same two thirds of the paper.

What does the Residential Electrician exam cost?

The application instructions print $175 for a single exam, $275 for two and $375 for three. A re-test is $100 and a failure to appear is $100. None of it is refundable or transferable.

Which code book do I get on screen?

The 2023 edition of the National Electrical Code, plus NFPA 70E 2024 and the Cal/OSHA Pocket Guide for the Construction Industry updated 2022. You may not bring your own copy of anything.

Put it to the test

Thirty free questions, timed, with the working shown

Every miss comes back with the arithmetic worked out and the code section named, so you learn the trap and not just the answer. No account.

Start the free practice testSee the $79 question bank

All questions here are original. They are not actual exam questions, and no question bank can promise you a pass.

What this page cites

If your book is the other edition

The 2023 to 2026 section crosswalk maps every section that moved, both directions, $29 once.

Built and maintained by Jeff Clerisier, Trojan Digital Marketing.

Every rule here is cited to the section it comes from, and corrections are logged in public with the date. This is study material rather than electrical advice, and it does not replace your own code book or your inspector.

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