Who Can Qualify for the 07A Master Exam?

Washington requires a master specialty electrician applicant to have possessed a valid specialty electrician certificate, in the same specialty being applied for, for at least two years.

For this credential, that means holding the Washington 07A Nonresidential Lighting Maintenance & Lighting Retrofit electrician certificate for the required period before taking the master examination.

The Master Certificate Replaces the Matching 07A Electrician Certificate

Washington states that when you pass the master electrician examination and are certified, the master certificate replaces your existing electrician certificate for that same certification category.

You do not carry a separate 07A electrician certificate and 07A master certificate for the same specialty at the same time.

What Can a 07A Master Electrician Do?

A Washington master electrician can work with the tools of the trade inside the certificate's authorized specialty. A master can also act as the assigned master/administrator for an electrical contractor when Washington's assignment rules are satisfied.

• Perform hands-on 07A lighting maintenance and retrofit work
• Repair and service existing nonresidential luminaires
• Replace qualifying ballasts and sockets
• Install listed lighting retrofit reflectors and kits
• Replace or retrofit qualifying remote-located ballasts with approved products
• Provide permitted supervision under Washington certification rules
• Serve as designated master/administrator for a matching contractor when properly assigned
• Help ensure the contractor follows Washington electrical laws, rules, permits, inspections, and scope limits

The 07A Scope Is Narrow and Very Specific

Washington limits 07A to work within the housing of existing nonresidential luminaires for repair, service, maintenance, and installation of energy-efficiency lighting retrofit upgrades.

This is an important phrase to understand. The luminaire already exists. The specialty is about keeping that existing lighting equipment operating or improving its energy performance within the allowed housing and components.

A 07A master should be able to look at a proposed project and decide whether it is truly a maintenance or retrofit job, or whether it has become a new lighting installation that needs broader authority.

Ballast Replacement Is Included

Washington expressly includes ballast replacement in the 07A specialty. This is one of the classic lighting-maintenance tasks that belongs squarely inside the classification.

Depending on the existing luminaire and retrofit plan, the job may involve removing a failed ballast, replacing it with an approved compatible product, or completing a listed retrofit that changes how the luminaire operates.

At master level, study the equipment rating, listing, conductor condition, grounding and bonding, lamp compatibility, and the manufacturer's instructions rather than treating every ballast like it came from the same mysterious metal box factory.

Socket Replacement Is Included

Washington also expressly includes replacement of sockets within the 07A lighting-maintenance specialty.

Socket work still needs to remain inside the existing luminaire and follow applicable code, listing, temperature, conductor, and equipment requirements.

A damaged lampholder can look like a small problem, but poor replacement work can create overheating, arcing, bad connections, or an equipment-listing problem. Small part, big potential headache.

Listed Lighting Retrofit Reflectors and Kits Are Included

The 07A specialty includes installation of listed lighting retrofit reflectors and kits. This is the part of the scope that makes the "Lighting Retrofit" words in the credential matter.

Energy-efficiency upgrades may change lamps, LED components, drivers, reflectors, sockets, internal conductors, or other components when the retrofit is a listed product intended for the existing luminaire.

The master should verify that the retrofit is appropriate for the existing luminaire, installed according to its listing and instructions, and still within the 07A housing-based scope.

Remote-Located Ballasts Are a Special Exception

Most 07A work is limited to the luminaire body. Washington provides one notable exception: remote-located ballasts may be replaced or retrofitted with approved products.

This exception does not turn the specialty into general remote-equipment or branch-circuit work. It simply recognizes that some lighting systems place the ballast away from the luminaire housing.

On the exam, pay attention to exact wording. "Remote ballast" does not mean "anything remote from the fixture."

Installing New Luminaires Is Outside 07A

Washington expressly states that 07A does not include installing new luminaires.

That means the specialty is not a license for adding a new row of fixtures, installing lighting in a newly built space, or creating a brand-new lighting layout.

The easiest way to remember the difference is that 07A starts with an existing luminaire. If the project starts with an empty ceiling and a box of brand-new fixtures, you are probably asking the wrong specialty to do the job.

Installing New Branch Circuits Is Outside 07A

The specialty also does not include installing new branch circuits.

A lighting retrofit may reduce electrical load, change lamps, or replace internal components, but 07A does not provide authority to run a new branch circuit to create new lighting capacity.

If the project needs new circuit conductors, new overcurrent-protection arrangements, or a new supply path, the work has moved beyond the ordinary 07A scope.

Moving or Relocating Existing Luminaires Is Outside 07A

Washington also excludes moving or relocating existing luminaires from 07A.

This is a useful difference between 07A and some other maintenance classifications. A 07A electrician can repair and retrofit the existing luminaire, but the specialty does not authorize moving it to a new location.

A retrofit plan that says "reuse the same fixtures, but move them three ceiling tiles over" is no longer a simple 07A project.

Altering Existing Branch Circuits Is Outside 07A

Washington's 07A rule also prohibits altering existing branch circuits.

That means the specialty is not for rerouting branch wiring, extending circuits, changing the supply arrangement, or making broader branch-circuit modifications as part of the retrofit.

07A Is Nonresidential

The title matters. This specialty is for nonresidential lighting maintenance and lighting retrofit work.

That can include offices, stores, warehouses, schools, commercial common areas, industrial facilities, and other nonresidential occupancies, subject to the actual electrical and licensing rules that apply to the location.

The scope should not be confused with 07B Residential Maintenance, which has its own occupancy and equipment rules.

The Current 07A Master Exam at a Glance

Current 07A Master Exam Blueprint

Electrical Equipment and General Trade Knowledge & Theory are the largest technical categories at about five questions each. Grounding & Bonding contributes about three, while Introduction, General Requirements, and Overcurrent Protection contribute about two each.

Electrical Equipment Is About Five Questions

NEC 400-427 and 455-480 contribute about five questions, making Electrical Equipment one of the biggest areas on the technical section.

Review topics such as:

• Flexible cords and cables where applicable
• Lighting equipment connections
• Equipment ratings
• Listed retrofit products
• Drivers, ballasts, sockets, and related components
• Equipment nameplates and labels
• Temperature and conductor concerns
• Safe replacement and retrofit practices

Study the NEC equipment rules together with the Washington scope rule. A technically correct installation can still be outside 07A if the contractor is doing new lighting construction instead of maintenance or retrofit work.

General Trade Knowledge and Theory Are About Five Questions

General Trade Knowledge & Theory also contributes about five questions. Lighting maintenance is practical electrical work, so candidates should be comfortable with basic electricity and lighting-system troubleshooting.

• Voltage
• Current
• Resistance
• Power
• Ohm's law
• Series and parallel concepts
• Ballast and driver basics
• Lamp and LED troubleshooting
• Equipment ratings
• Basic electrical measurements

The exam may be open book, but there is no practical reason to look up Ohm's law every time it walks into the room.

Grounding and Bonding Are About Three Questions

NEC 250 contributes about three questions. Review equipment grounding, bonding of metal luminaire housings, fault-current paths, grounding connections, and safe reconnection after retrofit work.

Retrofit work can involve old metal housings, aged conductors, changed components, and older connection methods. A master electrician should be alert to grounding and bonding problems before the fixture goes back into service.

Overcurrent Protection Is About Two Questions

NEC 240 contributes about two questions. 07A does not authorize branch-circuit alteration, but the master still needs to understand how existing lighting circuits are protected.

Review overcurrent-device ratings, conductor protection concepts, equipment protection, and how lighting equipment interacts with the supplying circuit.

Knowledge of the breaker is required even when changing the breaker is not part of the lighting-retrofit project.

General Requirements Are About Two Questions

NEC 100-110 contributes about two questions. Review definitions, listed and labeled equipment, installation and use, conductor termination concepts, equipment ratings, and basic safe-installation requirements.

This category is especially important for retrofit kits because the listing and manufacturer instructions are part of deciding whether a retrofit is suitable for a particular luminaire.

Hazardous Locations Add About One Question

NEC 500-516 contributes about one question to the current 07A Master outline.

A lighting-maintenance contractor may encounter luminaires in garages, industrial spaces, fuel-related locations, spray areas, or other environments where location classification changes equipment requirements.

One question is still worth one point, so know how to identify that the location may require special listed equipment and additional code attention.

The Washington Codes Section Has 20 Questions

The Washington Codes section contains about 20 questions and gives master candidates one hour. That means half of the published 07A Master exam is Washington law and administrative rules.

Study:

• Chapter 19.28 RCW
• Chapter 296-46B WAC
• WAC 296-46B-920 07A specialty scope
• Master electrician qualification rules
• Master and administrator assignment
• Electrical contractor licensing
• Electrician and trainee certification
• Permits and inspections
• Examination rules
• Enforcement and penalties
• Renewal and continuing education

If your study plan is ninety percent NEC and ten percent Washington law, the exam has a surprise waiting for you.

The Current Exam Is Open Book

Washington electrical examinations are open book. The current PSI bulletin bases Washington electrical exam questions on the 2020 National Electrical Code, current RCW 19.28, and current WAC 296-46B.

Original copyrighted references may be highlighted, underlined, and permanently tabbed before the examination. Printed Washington laws and rules are allowed under the testing rules when prepared in the accepted format.

Personal notes, removable tabs, sticky notes, and writing in references during the examination are not permitted. A silent nonprinting nonprogrammable calculator is allowed.

Current Exam NEC vs. Current Field NEC

Washington currently uses the 2023 NEC for field installations and inspections. The state has adopted the 2026 NEC with an effective date of December 31, 2026, when it will replace the current 2023 edition.

The current PSI licensing-exam bulletin still uses the 2020 NEC as the Washington exam reference.

• For exam day: follow the current PSI and L&I testing-reference instructions.
• For field work: follow the NEC edition and Washington amendments currently in force.

The Three Core Master References

A practical 07A Master study set starts with:

• 2020 National Electrical Code for the current licensing exam
• RCW Chapter 19.28
• WAC Chapter 296-46B

The Washington General Master Electrician Book Package contains these same three core Washington master-level references. It is broader than the 07A exam, so use the 07A blueprint and specialty scope to focus your study.

Open-Book Strategy for a Fast Two-Hour Master Exam

The 07A Master exam is compact: one hour for 20 NEC/Theory questions and one hour for 20 Washington Codes questions. That is not much time for wandering through books.

1. Memorize the 07A scope sentence. Existing nonresidential luminaire housing, maintenance, repair, service, and energy-efficiency retrofit.
2. Memorize what is included. Ballasts, sockets, listed reflectors and retrofit kits, plus approved remote-ballast replacement or retrofit.
3. Memorize what is excluded. New luminaires, new branch circuits, luminaire relocation, and branch-circuit alteration.
4. Tab NEC 240 and 250.
5. Practice Electrical Equipment lookups.
6. Practice lighting theory and troubleshooting without constant book searches.
7. Study RCW 19.28 and WAC 296-46B as a separate subject.
8. Practice 20-question sections in one hour.

Apply Through Labor & Industries Before Scheduling With PSI

Master electrician candidates must apply to Washington Labor & Industries before they can schedule the examination. L&I verifies the required two years of certification in the matching specialty.

Once the application is approved, L&I sends instructions for scheduling the exam with PSI.

Washington's examination rules require all master sections to be passed within the applicable one-year examination period.

Current Retest Rules

The current PSI bulletin requires a 14-day wait after a failed examination attempt before retesting.

After a third failed attempt, later attempts require a three-month wait from the most recent failure date.

Use the diagnostic report to decide whether your problem is NEC navigation, theory, or Washington law before you pay to repeat the same mistake.

Current PSI Exam Fee

The 07A Master examination totals two testing hours. PSI's current time-based fee table lists $55 for a two-hour examination.

PSI notes that master examinations are billed at a flat rate for the required sections. Verify the live amount at scheduling because testing fees can change.

Current Washington Master Application Fee

Washington's current fee schedule lists the Master Electrician exam application, original certificate, and processing fee at $204.60.

The current schedule states that $44.20 of the application amount is nonrefundable after submission.

Check the current WAC 296-46B-909 fee schedule before paying because Washington updates licensing fees periodically.

Using the 07A Master Certificate for Contractor Assignment

A master electrician can be assigned as the designated master/administrator for an electrical contractor when Washington's contractor and assignment rules are satisfied.

For a 07A master, the contractor should hold the matching specialty classification unless it has broader authority. The assigned master accepts responsibility for helping ensure that the contractor follows Washington electrical laws and rules.

Washington currently charges $53.00 for assignment or unassignment of a master/administrator designation. A master electrician must notify L&I of assignment-status changes as required by the department.

Renewal and Continuing Education

Washington master electrician certificates renew every three years and expire on the certificate holder's birthdate.

A normal three-year master certification period currently requires 24 hours of approved continuing education:

• At least 8 hours of code update
• At least 4 hours of RCW/WAC review
• 12 additional hours of approved continuing education

Current master renewal is $175.70 online or $202.20 by mail, fax, or in person.

If the certificate is more than 90 days past expiration, Washington requires reapplication and another master examination to reinstate it.

A Practical 07A Master Study Plan

1. Start with the 07A scope paragraph. Be able to explain it without opening the book.
2. Memorize included work. Ballasts, sockets, listed retrofit reflectors and kits, and approved remote ballasts.
3. Memorize excluded work. New luminaires, new branch circuits, luminaire relocation, and branch-circuit alteration.
4. Study NEC Electrical Equipment. It is one of the largest technical categories.
5. Practice General Trade Knowledge & Theory. It is also about five questions.
6. Review NEC 250 Grounding and Bonding.
7. Review NEC 240 Overcurrent Protection and NEC 100-110 General Requirements.
8. Review Hazardous Locations enough to recognize special equipment requirements.
9. Study RCW 19.28 and WAC 296-46B carefully.
10. Take full 20-question NEC/Theory and 20-question Washington Codes practice sections in one hour each.

Study Like a Lighting Technician and a Contractor Master

A useful study method is to picture a real commercial lighting retrofit. Start with an existing troffer, strip light, high-bay, wall pack, canopy fixture, or other nonresidential luminaire. Ask what failed, what is being replaced, and whether the work stays within the luminaire housing.

Then ask the licensing questions. Is the project adding a new fixture? Moving an existing fixture? Running a new branch circuit? Altering the branch circuit? If yes, the project has likely moved beyond 07A.

Review the Washington 07A Nonresidential Lighting Maintenance & Lighting Retrofit Master Electrician collection for specialty-focused preparation.

For the broader core master references, review the Washington General Master Electrician Book Package. For licensing support, review 1ExamPrep application services. For books, testing costs, licensing expenses, and related professional costs, review 1ExamPrep financing options.

Frequently Asked Questions

Conclusion

The Washington 07A Nonresidential Lighting Maintenance & Lighting Retrofit Master Electrician certificate is a narrow, specialized master credential for experienced lighting-maintenance electricians. It is designed for people who already understand existing nonresidential luminaires and are ready to combine technical work with master-level contractor responsibility.

To qualify for the exam, Washington requires a master specialty applicant to have held the matching valid specialty electrician certificate for at least two years. For 07A, that means two years holding the Washington Nonresidential Lighting Maintenance & Lighting Retrofit electrician certificate.

Washington does not use out-of-state credit to qualify a candidate for the master electrician examination. Master candidates apply through Labor & Industries first, and L&I verifies eligibility before PSI scheduling.

When the master certificate is issued, it replaces the matching electrician certificate. The master can continue doing hands-on work inside the specialty and, when properly assigned, can serve as the designated master/administrator for a matching electrical contractor.

The legal scope is simple enough to say but important enough to repeat: 07A is limited to work within the housing of existing nonresidential luminaires for repair, service, maintenance, and installation of energy-efficiency lighting retrofit upgrades.

Washington specifically includes ballast replacement, socket replacement, and installation of listed lighting retrofit reflectors and kits. Most work stays inside the luminaire body. The main exception is that remote-located ballasts may be replaced or retrofitted with approved products.

The exclusions are just as important. 07A does not authorize installing new luminaires, installing new branch circuits, moving or relocating existing luminaires, or altering existing branch circuits.

That makes the scope boundary easy to visualize. The specialty starts with an existing nonresidential luminaire and focuses on keeping it operating or upgrading it efficiently. Once the project becomes new lighting construction or branch-circuit work, it needs broader authority.

The current 07A Master exam is compact. NEC and Theory contains about 20 scored questions and allows one hour. Washington Codes contains about 20 scored questions and allows one hour. The current published total is 40 scored questions across two section-hours.

There is no separate Major Load Calculations section. Electrical Equipment and General Trade Knowledge & Theory are the largest technical categories at about five questions each. Grounding & Bonding contributes about three questions. Introduction, General Requirements, and Overcurrent Protection contribute about two each, and Hazardous Locations contributes about one.

The Washington Codes section makes up half the published exam. Study RCW 19.28, WAC 296-46B, master qualification, contractor licensing, master/administrator assignment, worker certification, permits, inspections, exam rules, renewal, and continuing education.

The current PSI bulletin identifies Washington electrical examinations as open book. The testing references are the 2020 National Electrical Code, current RCW 19.28, and current WAC 296-46B. Permanent tabs, highlighting, and underlining are permitted under the rules, while personal notes and removable tabs are not.

Washington field work currently uses the 2023 NEC, while the licensing exam still uses the 2020 NEC. The state has adopted the 2026 NEC effective December 31, 2026. Candidates should verify the exam reference shortly before test day because exam updates can happen on a different schedule than field-code adoption.

Washington currently requires a minimum passing score of 70 percent. Failed attempts require a 14-day wait before retesting, and after a third failed attempt later attempts require a three-month waiting period.

PSI's current fee table lists $55 for a two-hour exam. Washington's current master application, original certificate, and processing fee is $204.60. Current assignment or unassignment of a master/administrator designation is $53.

Master electrician certificates renew every three years on the holder's birthdate. Current renewal is $175.70 online or $202.20 by mail, fax, or in person. A normal three-year period requires 24 hours of approved continuing education, including at least eight hours of code update and four hours of RCW/WAC review.

Strong 07A Master preparation is about precision. Learn the luminaire, the retrofit products, grounding and bonding, overcurrent protection, lighting theory, Washington law, and the exact specialty boundary. A good retrofit makes the lighting better. A good master also makes sure the contractor is legally allowed to do it.

Key Takeaways

• Washington 07A Master candidates must have held the matching Washington 07A specialty electrician certificate for at least 2 years.
• The current exam has 20 NEC/Theory questions in 1 hour plus 20 Washington Codes questions in 1 hour, for 40 published scored questions.
• 07A covers existing nonresidential luminaire maintenance and energy-efficiency retrofit work, including ballasts, sockets, listed retrofit reflectors/kits, and approved remote-ballast work.
• 07A does not authorize new luminaires, new branch circuits, luminaire relocation, or branch-circuit alteration.
• The current master application fee is $204.60, and master certificates renew every 3 years with 24 hours of approved continuing education.

Plain-Language Summary

Washington's 07A Nonresidential Lighting Maintenance & Lighting Retrofit Master Electrician certificate is for experienced specialty electricians who work on existing commercial and other nonresidential lighting equipment.

To qualify for the master exam, you need to have held the matching Washington 07A electrician certificate for at least two years. Labor & Industries verifies your eligibility before you schedule the exam with PSI.

When you earn the master certificate, it replaces the matching 07A electrician certificate. You can still perform hands-on 07A work and can also serve as a contractor's designated master/administrator when properly assigned.

The 07A specialty is very focused. It covers work inside the housing of existing nonresidential luminaires for repair, service, maintenance, and energy-efficiency lighting retrofit upgrades.

Washington specifically allows ballast replacement, socket replacement, and installation of listed retrofit reflectors and kits. Remote-located ballasts may also be replaced or retrofitted with approved products.

The specialty does not allow you to install new luminaires. It does not allow new branch circuits. It does not allow moving or relocating existing luminaires. It does not allow altering existing branch circuits.

A simple way to remember the scope is to picture an existing commercial light fixture. If you are repairing it, servicing it, replacing approved internal components, or installing a listed retrofit kit, you may be inside 07A. If you are adding a new fixture or moving the fixture to a different location, you are probably outside 07A.

The current 07A Master exam has 20 NEC and Theory questions and gives you one hour. The Washington Codes section also has 20 questions and gives you one hour. That is 40 published scored questions across two hours.

There is no separate Major Load Calculations section. Electrical Equipment and General Trade Knowledge & Theory are the biggest technical categories at about five questions each. Grounding & Bonding is about three questions. General Requirements, Overcurrent Protection, and Introduction are about two each.

The exam is open book and currently uses the 2020 National Electrical Code, current RCW 19.28, and current WAC 296-46B.

Washington field installations currently use the 2023 NEC. The state has adopted the 2026 NEC effective December 31, 2026. Because the exam reference can change on a different schedule, always check PSI and L&I before test day.

The current passing score is 70 percent. If you fail, the current rules require a 14-day wait before another attempt. After a third failed attempt, later attempts require a three-month waiting period.

PSI's current fee table lists $55 for a two-hour examination. Washington currently lists $204.60 for the Master Electrician exam application, original certificate, and processing fee.

The master certificate renews every three years on your birthdate. Current renewal requires 24 hours of approved continuing education during a normal three-year period, including at least eight hours of code update and four hours of RCW/WAC review.

Use the Washington 07A Nonresidential Lighting Maintenance & Lighting Retrofit Master Electrician collection from 1ExamPrep to organize your preparation around luminaire maintenance, retrofit kits, ballast and socket replacement, the 2020 NEC exam reference, Washington law, lighting theory, grounding and bonding, and open-book reference navigation.