Electrical Exam Study Guides or Instructor Guided Support?

December 19, 2023
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There is no shortage of electrical exam self-study guides that promise to prepare you to pass the electrical exam. However, there is a tremendous difference between do-it-yourself electrical exam study guides and the instructor-led electrical exam guidance you need to succeed.

Effective electrical exam preparation helps you make the connection between the work you do every day in the field and the questions you’ll see on your examination. It also ensures that you will have access to knowledgeable instructors who will carefully and patiently guide you through the codes and calculations you’ll need to know to pass your exam. You can’t ask do-it-yourself study guides questions, but you can ask your EES instructor as many questions as needed to understand what you need to know to pass your electrical exam.

Can you answer the following exam question with ease?

Find the code required cable tray width for the following conductors:
3 – #600 RHH conductors   4 – #750 RHH conductors   5 – #1250 RHH conductors
A. 16 inches
B. 18 inches
C. 20 inches
D. 24 inches
Solution:
D. 24 inches
NFPA 70 Article 392.22 provides the rules that govern cable tray calculations when 1000 kcmil or larger single conductor cables are installed in the same cable tray with single conductor cables smaller than 1000 kcmil. This code article requires the use of Column 2 of Table 392.22(B)(1).
The total square inches required for these conductors is 22.2628 sq.in. Refer to Column 2 of Table 392.22(B)(1) The measurement closest to this value without going under is 26 sq.in. A 24-inch tray would be required.
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Electrical Exam Prep