ICC EXAM – W21 National Standard Low-Voltage Electrician


To become a licensed National Standard Low-Voltage Electrician (W21), you are required to pass an open-book exam. We offer the books, tabs, and a fully online and inclusive educational course to prepare you to sit for the National Standard Low-Voltage Electrician exam.In this course you will find: Highlighting guides, Practice quizzes, Math, Calculations and Theory, Instructor Support, Test Taking Tips. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.


Course Overview

This course covers information regarding the National Electrical Code and other material used for your exam. In this course you will find:

  • Highlighting guides
  • Practice quizzes
  • Math, Calculations and Theory (This includes additional NEC practice, electrical theory, calculations and transformer information)
  • Instructor Support
  • Test Taking Tips

How It Works


Obtain pre-approval from the state (if applicable).


Purchase Exam Prep materials.


Schedule and pass your state exams.


Submit to the state your application, licensing fee, and proof of insurance.

Requirements To Complete

About This License

If you do electrical sign work in a city, county, or state that accepts the International Code Council, that jurisdiction will require you to take and pass a Code Council examination that is based on the National Electrical Code.

Requirements to Obtaining Your License

Prior to scheduling a test, you should first consult with your local or state licensing agency to determine which examination you should take. Some agencies may also require you to meet certain prequalification criteria prior to testing.

Applying For Your License

Passing an ICC contractor exam is NOT a license to practice and does not guarantee licensing in any jurisdiction. We highly recommend contacting the jurisdiction in which you wish to work for more information on their specific exam requirements for licensure.

Exam Details

W46 National Standard Framing Contractor Exam

  • 50 questions
  • 3 hours
  • $110
  • 70% required to pass
  • Topics include General Knowledge, LV Remote Control & Alarm Systems, LV Communications & Sound, LV Control Circuits, and Fiber Optical.
  • To schedule your exam, visit www.pearsonvue.com/icc/ or call Pearson VUE at 1-877-234-6082

Books and References for the Exam

  • 2011 National Electrical Code
  • American Electricians’ Handbook OR Ugly’s Electrical References

Exam Review Education

Online Training: The program takes you through each one of the reference books that the exam is based on showing you exactly what to highlight. After your highlighting is completed with each book, you have the option take an online practice test to reinforce concepts presented. Also, there is an extensive math and plans analysis portion. The program narrated and animated.

Continuing Education

Depends on your jurisdiction.

Reciprocity Agreement

Some reciprocity depending on jurisdiction.

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