California General Electrician/Topics/Motors

Motors practice test: free California General Electrician questions

Drill 25 Motors questions with instant explanations and official citations.

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Topic overview & passing targets

Motors Domain Overview

The Motors module is a core testing domain on the California General Electrician. QuizCram provides 25 practice questions for this domain with verified handbook rationales.

  • Target Passing Benchmark: 70% (100 multiple-choice questions · 70% to pass · 4.5-hour limit · supplied electronic references)
  • Domain Questions: 25 items
  • Source Material: Official Handbooks
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Sample Practice Questions for Motors

  1. Question 1Ref: NEC 430.22 — Motors: Branch Circuit Conductors

    A 5-horsepower, 230-volt, single-phase pool pump motor has a Table 430.248 full-load current of 28 amps. What is the minimum size copper THWN branch-circuit conductor (75°C terminations)?

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    Correct Answer
    A. 10 AWG

    NEC 430.22 requires branch-circuit conductors for a single motor to have an ampacity of at least 125% of the motor full-load current from Table 430.248: 28 × 1.25 = 35 amps. 10 AWG copper THWN is rated 35 amps at 75°C in Table 310.16, so 10 AWG is the minimum; 8 AWG (50 A) is larger than required.

  2. Question 2Ref: NEC 430.52 — Motors: Branch-Circuit Short-Circuit Protection

    A 10-horsepower, 230-volt, 3-phase motor has a Table 430.250 full-load current of 28 amps. What is the maximum rating of an inverse-time circuit breaker for motor branch-circuit short-circuit and ground-fault protection?

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    Correct Answer
    D. 70 amps

    Table 430.52 allows an inverse-time breaker of up to 250% of the motor full-load current: 28 × 2.5 = 70 amps, which is a standard size in 240.6(A). Where 250% does not land on a standard size, 430.52(C)(1) Exception 1 permits the next standard size up.

Frequently Asked Questions About Motors

QuizCram covers 25 practice questions in the Motors domain, mapped directly to the official examination blueprint.

The benchmark score is 70% (100 multiple-choice questions · 70% to pass · 4.5-hour limit · supplied electronic references).

Yes. All questions on QuizCram are written against official handbooks and blueprint specifications with legal citations.