Licensing Exams by Trade Name - Home Link


(6B) HVAC/R Restricted Electrician

Apply for the License
Washington State
Department of Labor & Industries

7273 Linderson Way SW
Tumwater, WA  98501
Phone:  (360) 902-5799
Exam Provider
PSI Services LLC
3210 East Tropicana
Las Vegas, NV  89121
Phone:  (855) 834-8751
Exam Type
Exam Content
Exam Content
(fron PSI bulletin)
# of
100-110General Requirements1
240Overcurrent Protection2
250Grounding and Bonding2
300‑398Wiring Methods3
Electrical Equipment1
430-450Motors, HVAC, Generators and Transformers3
500-516Hazardous Locations1
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 NOT include sample questions for “Major Load Calculations” and/or “General Trade Knowledge” specifically because they can not be created from code books or statutes.  This subject matter CAN be extracted from Ugly's Reference shown below and Chapter 9 of the NEC.

Books Allowed in the Exam
National Electrical Code (NFPA-70), 2017, NFPA
Buy at Builders Book
Washington Electricians and Electrical Installations, Title 19, Chapter 19.28 RCW
Buy at Builders Book
Washington Electrical Safety Standards, Administration, and Installation, WAC Chapter 296‑46B
Buy at Builders Book
Additional Recommended Books
Ferm‘s Fast Finder Index, 2017, IAEI
Buy at Builders Book
Tom Henry‘s Key Word Index, 2017, Tom Henry
Buy at Builders Book

We highly recommend that you purchase one of the reference 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.

Ugly‘s Electrical References, 2017, George Hart (also obtained at most Lowe‘s Home Centers)
Buy at Builders Book

The book above contains practical applications of the NEC such as Ohm‘s Law, series/parallel circuits, voltage drop, load calculations, motor phases, impediance, inductance and math formulas you are expected to know.  The "Basic Knowledge" covered in the exam is assumed and sometimes not listed as a subject. This book also covers subjects listed as "Calculations and Theory".

Available Study Materials
Washington (6B) HVAC/R Restricted Electrician
Practice Exam Package

Questions are sourced from the NEC and Washington statutes shown above.

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

The approx. number of practice questions in this package:  945

Additional bonus questions (260) are included from Ugly‘s Electrical Reference and the American Electricians‘ Handbook, 16th Ed.

Delivered via instant download link
Return to Top
Copyright Notice