What is the best California General Electrician exam prep?

It depends on where you are. For a focused 30 to 60 day window with a diagnostic to find your weak DIR domains, JourneymanIQ. For deep NEC foundation from scratch over months, Mike Holt. For hand-calculation drilling, Tom Henry. Start with a free diagnostic so you pick based on your actual gaps.

Is there a free California electrician practice test?

Yes. The JourneymanIQ diagnostic is 15 questions, about 15 minutes, no signup, and it maps your weak domains against the DIR General Electrician outline.

How much does California electrician exam prep cost?

Free options exist (YouTube, sample chapters, the diagnostic). Tom Henry workbooks run roughly $50 to $150. Mike Holt sets run roughly $400 to $600. JourneymanIQ is $49 per month or $129 every three months.

Comparison · California

Best California General Electrician exam prep, compared

There is no single best prep for every candidate. The right choice depends on how long you have, what you are weak on, and how you learn. Here is an honest side by side, and the situation each one fits.

Last reviewed June 2026

The options side by side

Feature	JourneymanIQ	Mike Holt	Tom Henry	Free / YouTube
Tuned to the DIR outline		NEC foundation	Calc focus
Free diagnostic of weak domains
Adapts to what you keep missing
Provided-reference lookup speed		Teaches the code	Calc focus
Calculation depth	Lessons + step calculators	Video + workbooks	The gold standard	Scattered
Best window	30 to 60 days	6+ months	Calc cram	Browsing
Price	$49/mo or $129/3mo	$400 to $600	$50 to $150	Free

No tool wins every row. Pick by your window and your weak spot.

Best for your situation

Best for a focused 30 to 60 day window

JourneymanIQ. The diagnostic finds your weak DIR domains, the daily plan fits around a shift, and the practice trains provided-reference speed. This is the window most working electricians actually have.

Best for deep NEC foundation from scratch

Mike Holt. If you have months and little recent code training, the video library teaches the NEC better than anything. Pair it with DIR-tuned practice in the final stretch.

Best for hand-calculation drilling

Tom Henry. If your diagnostic shows calculations are your worst domain and you like working problems on paper, the workbooks are hard to beat. Calculations are about 22% of the exam, so cover the rest too.

Best free starting point

The free diagnostic plus reputable YouTube. Free content is enough to orient and to find your gaps. It is rarely enough on its own to close them under the clock.

The honest bottom line

Do not buy prep before you know your weak domains. Run the free diagnostic first.
Match the tool to your window: foundation if you have months, sharpening if you have weeks.
Avoid anything claiming copied real exam questions. That is a copyright and accuracy risk, not an advantage.

What you actually get

This isn’t another article. It’s the prep system.

Free diagnostic

15 questions, no signup. A domain-by-domain weakness map for the DIR General Electrician exam, so you study the gaps, not everything.

Take it free

Show-the-work calculators

Voltage drop, conduit fill, box fill, dwelling load. The math builds one step at a time, so you learn the pattern, not just the answer. Free, no login.

Open the calculators

Scaffolded lessons

Watch one worked, run one with help, then drill it cold. Every calculation type the exam tests, in plain language.

See the lessons

Drills that adapt

Original California questions and code-navigation drills. The platform resurfaces the calculation types you keep missing until they stick.

See plans

Find your path

If you failed it onceThe 60-day wait is the work window. Find your two weakest domains and attack those, not a re-read of what you already knew.Build a retake plan If you’re still checking the rulesWhat’s provided at the test center, the 8,000 hours, C-10 vs General Electrician. Get the current facts before you study the wrong thing.Check the requirements If codebook speed is the weak spotReferences are provided, so the exam rewards whoever finds the rule fastest. Train the lookup, not just the rule.Train codebook speed

Start here

See exactly where you stand on the California exam.

15 questions, about 15 minutes, no signup. You get a domain-by-domain weakness map for the DIR General Electrician exam, so you study the gaps instead of everything.

Take the free diagnostic