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EL1J Exam — Voltage Classifications and Electrical Formulas — Study Guide

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This study material covers EL1J exam details, voltage classifications, and essential electrical formulas used in electrical calculations and exam preparation. It provides a focused reference for understanding voltage ranges, electrical relationships, and common formulas needed for solving technical problems. The material is designed for efficient review of core electrical concepts.

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5/15/26, 11:48 AM EL1J Exam Details, Voltage Classifications, and Electrical Formulas Flashcards | Quizlet




EL1J Exam Details, Voltage Classifications, and
Electrical Formulas
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, 5/15/26, 11:48 AM EL1J Exam Details, Voltage Classifications, and Electrical Formulas Flashcards | Quizlet



How many questions are on the EL1J exam? 90 multiple-choice questions.


How much time is allowed for the EL1J exam? 204 minutes.




What book is allowed during the EL1J exam? NESC only.


What is the passing score for the EL1J exam? 75%, or about 68 correct answers.


How long is the license valid? 3 years.


What voltage range is considered low voltage? 0-600V.


What voltage range is considered medium voltage? 600V-69,000V.


What voltage range is considered high voltage? 69,000V-230,000V.


What voltage range is considered extra-high voltage? 230,000V-1,000,000V.


What voltage range is considered ultra-high voltage? Over 1,000,000V.


At what voltage rating is Type MV cable rated? 2,001V or higher.


When should rubber-covered cable with a synthetic jacket be On systems over 3,000V.
shielded?




What does cable shielding eliminate? The effects of capacitance.


In New Mexico, when is a warning sign required on equipment? At 600V or above.



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Subjects

  • electrical concepts
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  • power calculations
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  • el1j exam
  • electrical exam preparation

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