Prepare for the Washington Nonresidential Maintenance Electrician examination with a focused reference package built around the electrical code, Washington electrical law, and state administrative rules used for the 07 Nonresidential Maintenance specialty. This package includes the Revised Code of Washington (RCW) Chapter 19.28, Washington Administrative Code (WAC) Chapter 296-46B, and the National Electrical Code, NEC, 2020 Edition.
Washington officially identifies this specialty as 07 Nonresidential Maintenance. It is designed for electricians who perform maintenance, repair, and replacement of existing electrical equipment and conductors in nonresidential environments. The classification is different from unrestricted general electrical work because its authority is centered on maintaining existing systems rather than performing broad new electrical construction.
The Washington Nonresidential Maintenance Electrician examination combines National Electrical Code knowledge, electrical theory, and Washington electrical laws and rules. Candidates should be prepared for questions involving services, wiring and protection, grounding and bonding, overcurrent protection, wiring methods, electrical equipment, motors, HVAC equipment, generators, transformers, equipment over 600 volts, hazardous locations, special occupancies, emergency systems, communications systems, and general trade theory.
Washington electrical examinations are open book. Candidates may bring approved reference materials into the testing center, making efficient code navigation an important part of preparation. Knowing whether a question belongs in the NEC, RCW Chapter 19.28, or WAC Chapter 296-46B can save valuable testing time.
The 07 specialty also includes certain specific maintenance activities identified by Washington rules, including temporary load-testing connections and defined replacement work involving existing equipment. Candidates should understand both the technical NEC requirements and the legal limits of the specialty.
This package combines the three primary references needed for organized study. The NEC provides national technical standards, RCW Chapter 19.28 establishes Washington electrical law, and WAC Chapter 296-46B contains detailed rules governing specialty scope, certification, trainee supervision, examinations, permits, inspections, contractors, and electrical installations.
The Washington 07 Nonresidential Maintenance Electrician examination contains two required sections: NEC & Theory and Washington Codes.
The published NEC & Theory outline includes approximately one question from NEC Article 90, two from NEC Articles 100 through 110, two from wiring and protection, three from services, three from overcurrent protection, four from grounding and bonding, five from wiring methods, two from electrical equipment, two from motors, HVAC equipment, generators and transformers, two from equipment over 600 volts, one from hazardous locations, one from special occupancies, three from special equipment, one from emergency and standby systems, two from special conditions, one from communications systems, and approximately five questions involving general trade knowledge and electrical theory.
The Washington Codes section contains approximately 17 questions involving RCW Chapter 19.28 and WAC Chapter 296-46B. Candidates should prepare for specialty scope, work experience, trainee supervision, certification, examinations, contractor responsibilities, permits, inspections, and Washington-specific electrical requirements.
The Washington Nonresidential Maintenance Electrician examination is an open book test. Washington Labor & Industries permits approved references in the examination center under established testing rules.
The 2020 National Electrical Code may be used. Permanent index tabs are acceptable, while removable tabs, sticky notes, and handwritten notes are prohibited. Original copyrighted reference materials may contain highlighting, underlining, and permanent index tabs when they otherwise comply with examination rules.
Printed copies of RCW Chapter 19.28 and WAC Chapter 296-46B may also be used during the examination. Printed Washington electrical laws and rules should be hole-punched and placed in a three-ring binder.
A qualifying nonprogrammable calculator may also be used. Candidates should become comfortable with basic electrical calculations involving voltage, current, resistance, power, conductors, motors, and equipment before examination day.
Because the NEC & Theory section contains approximately 40 questions in two hours, reference-navigation speed matters. Practice locating services, grounding and bonding, overcurrent protection, wiring methods, motors, hazardous locations, special equipment, and emergency-system provisions efficiently.
The Washington Codes section also requires familiarity with the state references. Candidates should know where to find the 07 specialty scope, experience requirements, supervision rules, certification provisions, and other Washington-specific requirements.
Washington Nonresidential Maintenance Electrician certification is administered through the Washington State Department of Labor & Industries. Candidates must meet the applicable experience and education requirements before qualifying for the 07 specialty examination.
Washington identifies Nonresidential Maintenance as electrical specialty classification 07. The specialty requires 4,000 hours of qualifying work experience.
Trainees working toward the 07 certificate must work under a specialty electrician certified for the work being performed or under a general journey level electrician. Washington requires trainees in this 4,000-hour specialty to be supervised at least 75 percent of the time.
Candidates must also complete 48 hours of qualifying basic classroom instruction under Washington's requirements for the 4,000-hour specialty pathway.
The scope of the 07 Nonresidential Maintenance specialty is limited primarily to the maintenance, repair, and replacement of like-in-kind existing electrical equipment and conductors.
The classification does not provide unrestricted authority for general new electrical construction. Work involving significant system expansion, new installations, or modifications outside the specialty's defined maintenance authority may require another electrical classification.
The 07 specialty includes installation and connection of temporary conductors and equipment used for load testing when the voltage does not exceed 600 volts.
Washington also permits certain replacement work when existing electrical equipment is replaced by equipment with a lower ampere rating. When the ampacity of the existing conductors is not modified, the specialty may replace an overcurrent or overload protective device with one having a lower ampere rating when required by the nameplate rating of the replacement equipment.
The 07 scope includes work from certain narrower maintenance specialty classifications established under Washington rules. Candidates should understand the relationship between general Nonresidential Maintenance authority and the more limited maintenance classifications incorporated into its scope.
Because the specialty is focused on existing systems, candidates should understand the practical distinction between maintenance, repair, replacement, alteration, and new installation. That distinction can affect whether a particular task is permitted under a 07 certificate.
Using the same references while studying that you expect to use during the exam can help improve familiarity with article numbers, definitions, tables, specialty rules, and common code locations.
Services: Review service conductors, service equipment, disconnecting means, grounding, overcurrent protection, and maintenance requirements affecting existing service installations.
Grounding and Bonding: Study equipment grounding conductors, bonding, grounding electrode systems, service grounding, separately derived systems, enclosures, and raceways.
Wiring Methods: Review raceways, cables, boxes, fittings, conductor protection, flexible wiring methods, support requirements, and methods used when maintaining or replacing existing wiring systems.
Overcurrent Protection: Study breakers, fuses, conductor protection, equipment protection, overload devices, replacement equipment ratings, and coordination between conductors and protective devices.
Motors and Equipment: Review motors, controllers, overload protection, disconnecting means, HVAC equipment, generators, transformers, and maintenance of electrical equipment.
Equipment Over 600 Volts: The examination includes questions involving higher-voltage equipment. Candidates should understand applicable NEC principles even though specific 07 temporary load-testing authority is limited to 600 volts.
Hazardous Locations: Review classified-location principles, suitable equipment, wiring methods, and maintenance requirements applicable to hazardous environments.
Special Occupancies and Special Equipment: Study electrical requirements for specialized occupancies and equipment commonly encountered in commercial, institutional, and industrial facilities.
Emergency and Standby Systems: Review emergency systems, standby systems, transfer equipment, wiring requirements, and maintenance considerations.
General Trade Knowledge and Theory: Practice Ohm's law, voltage, current, resistance, power, conductor calculations, motor calculations, circuit relationships, and troubleshooting concepts.
Washington Specialty Scope: Study the difference between maintenance, repair, replacement, and new installation so you can recognize when work falls within the 07 classification.
A practical study method is to divide practice questions by reference. Decide whether the answer is most likely found in the NEC, RCW, or WAC before opening a book. This approach helps build the navigation habits needed for open-book testing.
1 Exam Prep helps Washington Nonresidential Maintenance Electrician candidates organize preparation around the three core references included in this package: the 2020 National Electrical Code, RCW Chapter 19.28, and WAC Chapter 296-46B.
The package supports trade-focused review of services, wiring methods, grounding and bonding, overcurrent protection, motors, electrical equipment, hazardous locations, emergency systems, electrical theory, specialty scope, and Washington electrical requirements.
1 Exam Prep encourages practice-oriented preparation for the open-book examination. Candidates can strengthen reference-navigation skills by identifying the subject of a question, choosing the correct reference, locating the applicable provision, and applying it efficiently.
Experienced maintenance technicians often bring substantial field knowledge to the examination. Organized study helps connect that practical experience with precise NEC language and Washington regulations.
Washington-specific preparation is particularly important for the 07 specialty because its authority is defined by maintenance and replacement limits. Candidates should understand what work is permitted, what work requires a different classification, and where those rules are located.
The goal is to combine hands-on maintenance experience with stronger code familiarity, structured Washington regulatory review, effective reference navigation, and confidence-building study habits. This Washington Nonresidential Maintenance Electrician Book Package provides the core materials needed to support that preparation.
Washington identifies Nonresidential Maintenance as electrical specialty classification 07.
This package includes RCW Chapter 19.28, WAC Chapter 296-46B, and the 2020 National Electrical Code.
Yes. Washington electrical examinations are open book under the applicable testing rules.
The published examination outline lists approximately 40 NEC & Theory questions and 17 Washington Codes questions, for approximately 57 questions total.
The NEC & Theory section allows approximately 2 hours, and the Washington Codes section allows approximately 1 hour.
Washington requires a score of at least 70% on each required examination section.
Washington requires 4,000 hours of qualifying work experience for the Nonresidential Maintenance specialty.
Trainees in the 4,000-hour specialty pathway must work under an appropriately certified electrician and be supervised at least 75 percent of the time.
Yes. Washington requires 48 hours of qualifying basic classroom instruction for the 4,000-hour specialty pathway.
The 07 specialty is primarily limited to maintenance, repair, and like-in-kind replacement of existing electrical equipment and conductors in nonresidential environments, along with additional work specifically authorized by Washington rules.
No. The 07 certificate is a specialty credential and does not provide unrestricted general electrical authority.
Yes. Washington permits temporary conductors and equipment used for load testing when the voltage does not exceed 600 volts.
Yes. The 2020 NEC is permitted for the Washington electrical examination program covered by this package.
Yes. Printed copies of both Washington electrical references may be used when prepared according to Labor & Industries testing requirements.
Washington electrical examinations are administered through PSI after the electrician candidate receives the applicable examination approval from Washington Labor & Industries.
Focus on services, wiring methods, grounding and bonding, overcurrent protection, motors, electrical equipment, hazardous locations, special occupancies, emergency systems, electrical theory, 07 specialty scope, and Washington electrical laws and rules.
Find answers to common questions about our exam prep courses.
No questions match your search. Try a different keyword or category.