---
title: "C-10 Exam Study Schedule: 30, 60, and 90-Day Plans"
description: "A week-by-week C-10 exam study schedule for 30, 60, and 90 days. What to study each week, how to split trade vs Law and Business, and when to start timed mocks."
url: https://caelectricalprep.com/blog/c10-exam-study-schedule-30-60-90-days
published: 2026-08-17
topic: "Study"
language: en
license: "Free to read and quote with attribution to CA Electrical Prep (https://caelectricalprep.com)."
source_of_truth: "2025 California Electrical Code (Title 24, Part 3), which adopts the 2023 NEC with California amendments."
---

# C-10 Exam Study Schedule: 30, 60, and 90-Day Plans

A week-by-week C-10 exam study schedule for 30, 60, and 90 days. What to study each week, how to split trade vs Law and Business, and when to start timed mocks.

## Key points

- Pick your plan by calendar reality, not ambition: 30 days is a sprint for people already working in the trade, 60 days is the sweet spot, 90 days is for career changers or anyone rusty on calculations.
- Give the trade exam roughly 70 percent of your hours and Law and Business roughly 30 percent, but never let Law and Business slide to the last week.
- Start full-length timed mock exams no later than the halfway point of your plan, not the final week.
- Calculations (load, ampacity, conduit fill, voltage drop) need daily reps, not one big cram weekend.
- Taper the last three days: light review, no new material, and confirm your test center details with the CSLB and its testing vendor.

Most people who fail the C-10 did not fail because the material was too hard. They failed because they studied whatever felt interesting on a given night, never practiced under a clock, and left the Law and Business exam for the last weekend.

A schedule fixes that. Below are three plans built around the same structure, compressed or stretched to fit your calendar. Pick the one that matches the time you actually have, not the time you wish you had.

## First, choose your plan honestly

| Runway | Best for | Hours/week | Trade vs L&B |
|---|---|---|---|
| 30 days | Working journey-level electricians, strong on calcs | 25+ | 70 / 30 |
| 60 days | Most candidates — the default choice | 15–18 | 70 / 30 |
| 90 days | Career changers, rusty on math, or working 50+ hour weeks | 10–12 | 65 / 35 |

The trade side carries more weight in study time because it is broader and more calculation-heavy. Law and Business is narrower but unforgiving — it is a separate exam with its own pass mark, and you cannot pass one and skip the other. If you are unclear on how the two exams relate, read [the trade vs Law and Business breakdown](/blog/c10-trade-vs-law-business-exam) before you build your schedule.

## The 90-day plan

This is the plan for anyone who has been out of the field, is coming from a related trade, or simply cannot carve out big weekday blocks.

**Weeks 1–2 — Orientation and foundations.** Read through [what is actually on the exam](/blog/whats-on-the-c10-electrical-exam) and map the CSLB blueprint sections against your own confidence. Read through how the 2025 California Electrical Code is organized, then start closing the book and reproducing what you read. The exam is closed book, so recall matters more than knowing which page something is on.

**Weeks 3–5 — Core trade blocks.** One major topic per week: [grounding and bonding](/blog/grounding-and-bonding-c10-exam), [conductor ampacity and sizing](/blog/conductor-ampacity-and-sizing-c10), then [overcurrent protection](/blog/overcurrent-protection-c10). Read, then do 25 to 40 questions on that topic the same week. Reading without questions is how people convince themselves they know something.

**Weeks 6–8 — Calculations.** [Load calculations](/blog/electrical-load-calculations-c10), [conduit and box fill](/blog/conduit-and-box-fill-calculations-c10), [voltage drop](/blog/voltage-drop-calculations-c10), and motor and transformer work. Do a small number of calc problems every single day, even on days you are not otherwise studying. Ten minutes of reps beats a four-hour weekend session, because the goal is turning the procedure into muscle memory so it survives exam-day nerves.

**Weeks 9–10 — Law and Business push.** Contracts, licensing law, mechanics liens, payroll and workers' comp, safety, and business finance. This material is memorization-heavy and it decays, which is why it belongs in the back half rather than week one.

**Weeks 11–12 — Mocks and repair.** Two full timed mock exams per week, alternating trade and Law and Business. After each one, sort your misses by topic and spend your next session on the two worst.

**Final 3 days — taper.** Light review of your own notes only. No new material.

## The 60-day plan

The same arc, compressed. This is the plan most candidates should run.

| Weeks | Trade focus | Law & Business focus |
|---|---|---|
| 1–2 | Code structure, definitions, general requirements | Licensing law, contract basics |
| 3–4 | Grounding/bonding, conductors, overcurrent | Business organization, financial management |
| 5–6 | Load calcs, conduit fill, voltage drop, motors | Liens, bonding, insurance |
| 7 | Weak-topic repair + timed section drills | Employment, payroll, safety |
| 8 | Full timed mocks, both exams | Full timed mocks, both exams |

Start timed practice in week 5, not week 8. Untimed practice measures knowledge; timed practice measures whether you can produce that knowledge in about a minute and a half per question with someone else's clock running. Those are different skills and the second one only develops with reps.

Keep a running "miss log" from day one — a plain list of every question you got wrong and the reason. Not the topic, the reason: misread the question, wrong table, forgot the multiplier, guessed. Patterns show up fast, and most people find that half their misses are procedural rather than knowledge gaps.

## The 30-day plan

Only run this if you are working in the trade right now and comfortable with calculations. Otherwise, take the extra month.

- **Days 1–3:** Diagnostic. Take one full-length practice test on each exam cold. Score them. That is your map.
- **Days 4–14:** Trade, heavy. Two topics every three days, weighted toward whatever the diagnostic exposed. Calculations daily, no exceptions.
- **Days 15–21:** Law and Business, heavy — with two trade calc sessions per week so the math does not go cold. See the [Law and Business exam guide](/blog/law-and-business-exam-guide) for what this section actually covers.
- **Days 22–27:** Full timed mocks every other day, alternating exams. Repair days in between.
- **Days 28–30:** Taper.

The 30-day plan has no slack in it. Miss a week to a job emergency and the plan is finished, which is the real argument for the 60-day version.

## How to taper

The last three days are where people undo good preparation. The rules are simple.

- No new material. Anything you learn in the final 72 hours is unlikely to stick, and it displaces things you already know.
- Review only your own miss log and your own notes.
- Do one short timed set per day to keep your pacing sharp — 20 to 25 questions, not a full exam.
- Confirm the logistics: test center location, what ID you need, arrival time, and what you are permitted to bring. Get these from the CSLB at cslb.ca.gov and its official testing vendor. Do not rely on secondhand accounts, since procedures change. Our walkthrough of [exam day](/blog/c10-exam-day-what-to-expect) covers the general shape of it.
- Sleep. The exam rewards a rested brain far more than one extra hour of Chapter 3.

## The part people skip

Every plan above has the same spine: learn a topic, immediately test yourself on it, log what you missed, and start working under a clock well before the end. The learning part is what feels productive. The timed practice part is what actually tells you whether you are ready.

If you only take one thing from this: move your first full timed mock earlier than instinct says. Finding out you run out of time on load calculations is useful information in week five. In week eight it is just stress.

When you are ready to build that habit, working through [timed practice questions](/blog/c10-exam-practice-questions) in the same conditions you will face at the test center is the single closest thing to the real exam — and it is what turns study hours into a passing score.

## Questions and answers

### How many hours a week do I actually need?

Plan on 10 to 12 hours a week for a 90-day runway, 15 to 18 for 60 days, and 25 or more for 30 days. Consistency beats volume. Five focused one-hour sessions will teach you more than one exhausted six-hour Sunday, because spaced repetition is what moves code lookups and calculation steps into recall you can use under a clock.

### Should I study for the trade exam and Law and Business at the same time?

Yes, in parallel but not in equal amounts. The two exams test completely different skills, and Law and Business is mostly memorization and reading comprehension that fades fast if you learn it too early. Keep a steady Law and Business block each week, then increase it in the final two to three weeks so the contract, lien, and payroll material is fresh.

### When should I schedule my exam date?

Most candidates do better scheduling the date first and building the plan backward, because an open-ended timeline turns into months of drift. Confirm current scheduling windows, reschedule rules, and any deadline attached to your application at cslb.ca.gov, since those procedures change and you do not want to plan around a number you read on a forum.

### What if I am scoring poorly on practice tests two weeks out?

Do not panic and do not start over. Pull your last three practice sessions, sort missed questions by topic, and give the worst two or three topics the majority of your remaining study time. Most late-stage failures come from one or two weak areas, usually calculations or the Law and Business sections people skimmed, rather than broad unreadiness.

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