Construction Trade Research Area

(06) Limited Energy (Low Voltage)
Specialty Electrician

Apply for the License

Washington State Department of Labor and Industries
P.O. Box 44810
Olympia, WA  98504
Phone: (800) 833-6388

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 Questions
90 Introduction 1
100-110 General Requirements 2
200-225, 280-285 Wiring and Protection 1
230 Services --
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
490 Equipment greater then 600 volts --
500-516 Hazardous Locations 2
517-590 Special Occupancies --
600-695 Special Equipment 1
700-702 Emergency and Standby Systems --
705-780 Special Conditions 6
800-830 Communication Systems 3
Washington Laws and Rules (RCW and WAC) 17
Major Load Calculations --
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), 2008, NFPA. Doc Link
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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Washington • (06) Limited Energy (Low Voltage)
Specialty Electrician
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Comprehensive Tutorial price More Information
Basic Electrical Calculations Tutorial price More Information
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