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Your FREE Construction and Skilled Trades (CAST) Practice Test 2026 – 230+ Q&A

Prepare with realistic, Edison Electric Institute CAST-style questions — take a full practice test or drill one section at a time across all four EEI content areas.

Master questions to boost your score

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Click Start Test above to launch a full-length CAST practice test weighted like the real EEI battery, or drill a single section — Graphic Arithmetic, Mechanical Concepts, Reading for Comprehension, or Mathematical Usage. Every question includes a clear explanation so you learn the reasoning, not just the answer.

The CAST — officially the Construction and Skilled Trades (CAST) Test — is owned by the Edison Electric Institute (EEI) and used by most U.S. investor-owned electric utilities to screen candidates for lineworker, electrician, substation, and other skilled-trades roles.[1] These free CAST practice questions and test prep follow the published EEI structure so you practice the way the real test is built.[5] To sharpen each section, pair these with our free study guide, flashcards.

CAST at a Glance

CAST (EEI Battery) at a glance
DetailCAST (EEI Battery)
Questions110 across 4 separately timed sections
Question typeMultiple choice (arithmetic from drawings, mechanical reasoning, reading, math usage)
Time limit~87 minutes of testing (sessions run ~2 hours with instructions and breaks)
ResultEEI Index score 1-10 (no universal pass mark; set by each utility)
Administered byIndividual EEI member utilities (online, paper, or test center)
EligibilityApplicants for utility construction and skilled-trades positions; no prior credential required
CostNo candidate fee — paid for by the hiring utility (verify with employer)
RetakesTypically a 15-30 day wait; many utilities cap attempts at 2 per 12 months

What Is on the CAST Test?

The CAST test contains 110 questions in four separately timed EEI sections: Mechanical Concepts (44 questions), Reading for Comprehension (32), Mathematical Usage (18), and Graphic Arithmetic (16).[2]

Because each section has a fixed number of questions rather than a weighted content domain, the proportions below reflect each section’s share of the 110-question battery — Mechanical Concepts is by far the largest. Our full practice test mirrors these proportions:

CAST share of questions by EEI section
Mechanical Concepts40% · ≈42 Qs
Reading for Comprehension29% · ≈30 Qs
Mathematical Usage16% · ≈17 Qs
Graphic Arithmetic15% · ≈16 Qs
CAST practice test — practice questions by domain with answer explanations

Practice Questions by Section

Use Start Test for a full weighted CAST simulation, or open the hub and pick a single section to drill your weak area. After each full test, your results show a per-section breakdown so you know exactly where to focus — most candidates need the most reps on Mechanical Concepts and the fast-paced Mathematical Usage section.

Who Is Eligible to Take the CAST?

Anyone applying for a construction or skilled-trades job at an EEI member electric utility is eligible to take the CAST — there are no formal academic prerequisites and no prior credential is required.

Hiring utilities use it for lineworker, electrician, substation technician, transmission and distribution, vehicle maintenance, and meter service roles.[3] You become eligible to sit when a hiring utility invites you to test as part of its selection process. Each company defines its own minimum index score for a given position.

How Do You Register for the CAST?

You do not register for the CAST on your own or pay a fee — the hiring utility schedules the test for you. When you apply for a qualifying skilled-trades position at an EEI member utility, the recruiter or HR contact schedules the test and tells you whether you will take it online, on paper, or at a test center.[2]

There is no public sign-up portal — the hiring utility owns the testing logistics, sets the location and timing, and applies its own retake policy. Confirm the exact format and scheduling directly with the employer before your appointment.

What Score Do You Need to Pass the CAST?

There is no universal passing score for the CAST — your results across all four sections are combined into a single EEI Index score on a 1-to-10 scale, and each utility sets its own minimum threshold by position.[3] Higher is better, and the index reflects predicted success in the role.

In practice many employers look for at least a 4 or 5 to advance, while competitive roles at larger utilities often require a 6 or above. Because the sections are separately timed and you cannot borrow time between them, pacing within each section matters as much as accuracy.

How Hard Is the CAST? (Pass Rate)

EEI does not publish an official CAST pass rate, and there is no single pass/fail line — outcomes depend on each utility’s cut score for the index.[4] Reported candidate experiences vary widely: the Mathematical Usage section is notoriously tight at 18 questions in 7 minutes, and the heavily weighted Mechanical Concepts section is where many applicants gain or lose ground. Competitive postings can require an index of 6 or higher, so a comfortable margin above the minimum is the realistic target.

1-10
EEI Index score
no universal pass mark
4-6+
Typical utility cut
varies by role
40%
Mechanical Concepts
largest section

The takeaway: drill until you’re consistently fast and accurate on full-length, timed practice — especially Mechanical Concepts and Mathematical Usage — before you sit for the real battery.

What to Expect on Test Day

The CAST’s difficulty comes from speed and breadth rather than advanced content. The math and arithmetic is fundamental, but the Mathematical Usage section gives you only about 23 seconds per question, and Graphic Arithmetic requires you to pull numbers off prints and drawings under a clock.[4]

Mechanical Concepts, the largest section, rewards solid intuition about levers, gears, pulleys, gravity, and basic electricity, while Reading for Comprehension tests how quickly you can extract facts from technical passages.

Expect four separately timed sections with no borrowing time between them, plus instructions and short breaks that stretch the appointment toward two hours. If you test online, expect an ID check and a proctored environment.

Having simulated the section-by-section timing with practice tests makes that clock feel routine.

How to Use This CAST Practice Test

  • Recreate test conditions. Take each section timed, with no notes.[5]
  • Diagnose, then drill. Use a full CAST simulation to find weak sections, then drill them.
  • Prioritize Mechanical Concepts + Math Usage. They’re the biggest score-movers.
  • Learn the why. Read every explanation — understanding beats memorizing.
  • Answer everything. There’s no guessing penalty, so never leave a question blank.

Why Take the CAST?

The CAST is the gateway to high-paying, stable skilled-trades careers at investor-owned electric utilities — and a strong EEI Index score is often what separates candidates who advance from those who don’t.[1] These free CAST practice tests are the most efficient way to get there.

Conclusion

Passing the CAST comes down to fast, accurate work across mechanical reasoning, reading, and math under tight per-section clocks. Use this free CAST practice test to find your weak sections, drill them to mastery, and pair it with our free study guide, flashcards to walk in confident on test day.

CAST Practice Test FAQ

The EEI CAST (Construction and Skilled Trades Test) is a pre-employment aptitude battery owned by the Edison Electric Institute and used by most U.S. investor-owned electric utilities. It screens applicants for lineworker, electrician, substation, transmission and distribution, and other skilled-trades roles.

References

  1. 1.Edison Electric Institute / CEWD. “Construction and Skilled Trades (CAST) Practice Test — Full Toolkit.” cewd.org, 2026. ↑
  2. 2.PSEG. “Construction and Skilled Trades Selection System — Test Brochure.” corporate.pseg.com. ↑
  3. 3.Ameren. “Construction and Skilled Trades (CAST) Battery — Test Description.” ameren.com. ↑
  4. 4.WikiJob. “EEI CAST Test: Exam Prep & Practice Questions.” wikijob.co.uk. ↑
  5. 5.Aptitude Test Prep. “EEI CAST Test — Full Guide and Free Practice.” aptitude-test-prep.com. ↑
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