Licensing Exams by Trade Name

Washington
(06) Limited Energy (Low Voltage) 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 Henderson Office
450 N Stephanie St.
Henderson, NV  89014
Phone:  (855) 834-8751
Exam Type
OPEN  BOOK
Exam Content

The exam content below contains notations in ORANGE alerting you to code sections shown in the PSI bulletin that have been added, removed or replaced in the 2020 NEC.

NEC
Section
Content Areas# of
Questions
90Introduction1
100 – 110General Requirements2
200 – 225, 242Wiring & Protection
(280-285 replaced by 242)
1
240Overcurrent Protection3
250Grounding & Bonding3
300 – 398Wiring Methods5
400 – 427,
455 – 480
Electrical Equipment3
430 – 450Motors, HVAC, Generators & Transformers1
500 – 516Hazardous Locations2
600 – 695Special Equipment1
705 – 770Special Conditions
(780 removed in the 2008 NEC)
6
800 – 840Communication Systems
(840 added in the 2011 NEC)
3
Washington Laws & Rules (RCW and WAC)17
General Trade Knowledge & Theory3
Total number of test questions:
51
Time allowed (hours):
3.0
Scope of Work

(Source: RCW 296-46B-920) Specialty is limited to the installation, repair, replacement, and maintenance of signaling and power limited circuits and related equipment.  Specialty is restricted to low-voltage circuits and includes telecommunications, HVAC/refrigeration low-voltage wiring, fire protection signaling systems, intrusion alarms, energy management and control systems, industrial and automation control systems, lighting control systems, commercial and residential amplified sound, public address systems, and such similar low-energy circuits and equipment in all occupancies and locations.  For the purposes of this section, when a line voltage connection is removed and reconnected to a replacement component located inside the control cabinet, the replacement must be like-in-kind or replaced using the equipment manufacturer's authorized replacement component.  The line voltage circuit is limited to 120 volts 20 amps maximum and must have a means of disconnect.  This specialty may repair or replace line voltage connections terminated inside the cabinet to power supplies internal to the low voltage equipment provided there are no modifications to the characteristics of the branch circuit/feeder load being supplied by the circuit.  This specialty may not replace or modify the line voltage circuit or cabling or alter the means of connection of the line voltage circuit to the power supply or to the control cabinet.  Contractors may perform all telecommunications work under this specialty license and administrator's certificate.

NOTE:  Our study material for this exam will include sample questions for “Major Load Calculations” and “General Trade Knowledge” from Ugly's References, Chapter 9 Tables and Annex D of the NEC.

Books Allowed in the Exam
1.
National Electrical Code (NFPA-70), 2020, NFPA
Buy at Amazon
2.
Washington Electricians and Electrical Installations, Title 19, Chapter 19.28 RCW, 2018
Doc Link
3.
Washington Electrical Safety Standards, Administration & Installation, Chapter 296‑46B WAC, 2020
Doc Link
4.
Revisions to RCW & WAC statute sections above
Web Page Link
Additional Recommended Books
1a.
Ferm's Fast Finder Index, 2020, IAEI
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1b.
Tom Henry's Key Word Index, 2020, Tom Henry
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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.

2.
Ugly's Electrical References, 2020, George Hart
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3.
Practical Calculations for Electricians, 2020, Ray Holder
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NOTICE:  For the calculations portion of the examination, Annex D in the NEC is a good source of examples.  There are no questions from Annex D contained in our set of questions.  Additionally, we give you a list of questions in our answer key that may apply to calculations. You will want to purchase a separate book that covers calculations in more depth like the one we recommend above.

Available Study Materials
(06) Limited Energy Electrician
Practice Exam Package
$164.95

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

Informaion is included about additional free sample questions and links to essential sources of electrical calculations to assist in drilling for your exam.

Additional bonus questions are included from Ugly's Electrical References.

The approx. number of practice questions in this package:  2,450

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