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(6A) HVAC/Refrigeration Systems Electrician

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Washington State
Department of Labor and Industries ™

7273 Linderson Way SW
Tumwater, WA  98501
Phone: (360) 902-5269
WA Trades & Licensing Link

Exam Administrator

PSI Licensure: Certification ™
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Candidate Bulletin Link

Exam Type


Exam Content

Subject Areas# of
100-110General Requirements2
Wiring and Protection2
240Overcurrent Protection4
250Grounding and Bonding4
300‑398Wiring Methods4
Electrical Equipment4
430-450Motors, HVAC, Generators and Transformers4
490Equipment Over 1,000 volts, Nominal1
500-516Hazardous Locations1
600-695Special Equipment1
705-780Special Conditions2
Washington Laws and Rules (RCW and WAC)17
General Trade Knowledge and Theory4
Total number of test questions:
Time allowed (hours):

NOTE:  The study material we are offering for this exam will exclude sample questions for “Major Load Calculations” and/or “General Trade Knowledge” because they can not be created from code books or statutes.  Those exam questions are proprietary, copyrighted inventions of PSI.

Books Allowed in the Exam

National Electrical Code (NFPA-70), 2017, NFPA
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Washington Electricians and Electrical Installations, Title 19, Chapter 19.28 RCW
Web Page Link
Washington Electrical Safety Standards, Administration, and Installation, WAC Chapter 296‑46B
PDF File Link

Additional Recommended Books

Ferm's Fast Finder Index, 2017, IAEI
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Tom Henry's Key Word Index, 2017, Tom Henry
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We highly recommend that you purchase one of the two NEC index books above to study for your exam.  Each book is a comprehensive subject index to the NEC.  They provide an even faster way to look up answers in the code and are far more detailed than the index at the end of the code book.

Study Materials
Washington Electrical
Practice Exam Package
$75.95 - $249.95

The price of the study materials varies and is based on your exam sub-category chosen in our order form on the next page.

Questions are sourced from the NEC and Washington statutes shown above.  The files you will receive contain between 600 and 2,000 sample exam questions depending on the NEC sections required for your exam by PSI.

An answer key with detailed code sub-section references is included.

Additional bonus questions (260) are included from Ugly's Electrical Reference and American Electricians‘ Handbook.

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