Construction Trade Exam Research Area

(06) Limited Energy (Low Voltage)

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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

Exam Administrator

PSI Services, LLC
3210 E. Tropicana
Las Vegas, NV 89121
Phone: (800) 733-9267
Candidate Information Web Page

Exam Type


Exam Content

Subject Areas # of
90 Introduction 1
100-110 General Requirements 2
200-225, 280-285 Wiring and Protection 1
240 Overcurrent Protection 3
250 Grounding and Bonding 3
300-398 Wiring Methods 5
400-427, 455-480 Electrical Equipment 3
430-450 Motors, HVAC, Generators and Transformers 1
500-516 Hazardous Locations 2
600-695 Special Equipment 1
705-780 Special Conditions 6
800-830 Communication Systems 3
Washington Laws and Rules (RCW and WAC) 17
General Trade Knowledge and Theory 3

Total number of test questions: 51
Time allowed (hours): 3.0


Books Allowed in the Exam

1. National Electrical Code (NFPA-70), 2014, NFPA Buy at Amazon
2. Electricians and Electrical Installations, Chapter 19.28 RCW. Doc Link
3. Electrical Safety Standards, Administration, and Installation, Chapter 296-46B WAC. Doc Link

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