California General Electrician · 2023 NEC
A right table value can still lead to the wrong answer.
Practice the setup, inspect the worked answer, and find the step you missed before you repeat it in a timed mock.
- 530practice questions
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- 2023 NECreference edition
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Topic practice and three 100-question mock exams give you room to attempt questions, check your reasoning and return to weak areas. Keep a separate error log: lookup, setup, arithmetic or misread detail.
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- You are preparing for the California General Electrician exam and its reference edition matches this workbook.
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You need another state, another license level or a different code edition. This workbook is not an official code book or a replacement for required training.
California General Electrician — 2023 NEC
Chapter7, Question7.4
7.4
An 8 AWG copper conductor is rated 55 A at 90 C and 50 A at 75 C. With a calculated ambient factor of 0.88, a 0.80 conductor factor, and 75 C terminals, what current is allowed?
- A. 44 A
- B. 48.4 A
- C. 50 A
- D. 38.7 A
Full worked answer
Answer D: 55 × 0.88 × 0.80 = 38.72 A, shown as 38.7 A. This stays below the given 50 A terminal limit. The factors are supplied by this example; this short sample does not establish which factors apply to another installation.
Why the other three choices fail
44 A omits the supplied 0.88 correction factor. 48.4 A omits the supplied 0.80 adjustment factor. 50 A uses only the terminal limit and skips both factors. The example requires 55 × 0.88 × 0.80 = 38.72 A, below the supplied 50 A limit.
Before you buy: six straight answers
Which book should I buy?
Match the exact exam first: Texas Journeyman, Texas Master or California General Electrician. The Texas books use the 2026 NEC; the California book uses the 2023 NEC. You do not need all three. Confirm the current reference list with your exam provider before ordering.
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You can inspect complete worked samples below: the givens, setup, calculation and reason an attractive wrong answer fails. Use the explanations to identify whether you missed a lookup, a setup step, arithmetic or a detail in the question.
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No. Independent study material does not grant a license, replace required training or authorize electrical work. Use current official exam instructions and qualified supervision for actual work.
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