What Is a Washington General Master Electrician?

Washington recognizes general journey-level Master Electricians and specialty Master Electricians. The General Master Electrician is the broad master credential connected to the 01 General Journey Level classification.

A General Master Electrician may perform electrical installation work with the tools of the trade and can also serve in the administrator role required for an electrical contractor when properly assigned.

You Need Four Years as a Washington General Journey Level Electrician

Washington currently requires a General Master Electrician candidate to have been certified by L&I as a General Journey Level Electrician for at least 4 years before qualifying for the Master exam.

The Underlying 01 Experience Still Matters

The four-year Master requirement comes after earning the 01 General Journey Level certificate. That means General Master candidates arrive at the exam with substantial experience already behind them.

Washington's current in-state 01 route is apprenticeship-based. The normal pathway requires completion of an approved 8,000-hour electrical construction apprenticeship, including at least 4,000 hours in new industrial or commercial electrical installations, unless a recognized out-of-state, military, reciprocity, or other qualifying route applies.

How to Apply for the General Master Electrician Exam

1. Hold a Washington 01 General Journey Level Electrician certificate.
2. Complete at least four years as a certified General Journey Level Electrician.
3. Submit the Master Electrician examination application to Washington L&I.
4. Wait for L&I to verify your eligibility.
5. Receive the exam approval notice and scheduling instructions.
6. Schedule the General Master Electrician examination with PSI.
7. Prepare for NEC & Theory, Washington Codes, and Major Load Calculations.
8. Pass every required section with at least 70 percent.
9. Complete L&I's remaining certification requirements.

Do not schedule the Master exam before L&I approves the application. Master candidates follow the electrician/master approval process rather than the direct-scheduling process used by Administrator candidates.

Washington 01 General Master Electrician Exam at a Glance

The current seven-hour PSI exam fee schedule lists a $105 fee for this exam length. Verify the live fee before scheduling because exam pricing can change.

Current General Master Electrician Exam Blueprint

Wiring Methods is the largest individual NEC category. General Trade Knowledge & Theory also carries major weight, followed by Grounding & Bonding and Overcurrent Protection.

Wiring Methods Is the Largest NEC Topic

Wiring Methods currently carries about 11 questions, making it the largest individual NEC category on the General Master exam.

Review:

• Raceways and cable methods
• Boxes and fittings
• Box fill
• Conduit and raceway fill
• Securing and supporting methods
• Wet and damp locations
• Underground installations
• Physical-damage protection
• Conductor installation rules
• Special wiring methods

Master-level questions often require more than finding the right article. Read exceptions, table notes, cross-references, and conditions. The right page with the wrong sentence is still the wrong answer.

Grounding, Bonding, and Overcurrent Protection

Grounding & Bonding and Overcurrent Protection each carry about seven questions. Together, they account for a significant share of NEC & Theory.

Grounding and bonding topics include:

• Grounding electrode systems
• Grounding electrode conductor sizing
• Equipment grounding conductors
• Main bonding jumpers
• Services
• Separately derived systems
• Bonding metal systems and equipment
• Ground-fault current paths

Overcurrent topics include:

• Branch-circuit protection
• Feeder protection
• Standard device ratings
• Conductor protection
• Tap rules
• Transformer protection
• Motor protection
• Equipment-specific protection

General Trade Knowledge and Theory Is a Major Category

General Trade Knowledge & Theory currently accounts for about 12 questions, making it one of the largest portions of the Master technical section.

Practice:

• Ohm's law
• Voltage, current, resistance, and power
• Series and parallel circuits
• Single-phase calculations
• Three-phase calculations
• Voltage drop
• Transformer relationships
• Motor calculations
• Conductor calculations
• General trade mathematics

Years of field experience help, but exam theory still rewards deliberate practice. Knowing that a system works and being able to prove why it works are related skills, not identical twins.

Services, Feeders, and Distribution

Services currently carry about five questions, and the Major Load Calculations section makes service and feeder knowledge even more important.

Study:

• Service conductors
• Service equipment
• Disconnecting means
• Service sizing
• Feeder sizing
• Branch circuits
• Conductor ampacity
• Adjustment and correction factors
• Parallel conductors
• Panelboards
• Voltage drop

The Master exam expects you to connect distribution rules with calculations, grounding, protection, and equipment requirements instead of treating each topic as its own island.

Major Load Calculations Need Their Own Study Schedule

The current General Master exam includes a dedicated 10-question Major Load Calculations section with two hours allowed. Treat it as a separate exam inside the exam.

Practice calculations involving:

• Dwelling services and feeders
• Multifamily calculations
• Commercial services and feeders
• General lighting loads
• Demand factors
• Cooking equipment
• Dryers and appliances
• Heating and air-conditioning loads
• Motors
• Transformers
• Continuous loads
• Noncoincident loads
• Optional calculation methods

The two-hour section gives you more time per question because the problems can be much longer. Build a repeatable calculation process so each problem begins with organization instead of panic.

Motors, Transformers, Generators, and Equipment

Motors, HVAC equipment, generators, and transformers currently account for about five questions, with additional equipment questions elsewhere in the blueprint.

Review:

• Motor conductor sizing
• Motor overload protection
• Short-circuit and ground-fault protection
• Controllers
• Disconnecting means
• Transformer conductors
• Transformer overcurrent protection
• Separately derived systems
• Generator installations
• Transfer equipment
• HVAC equipment

Hazardous Locations, Special Occupancies, and Special Equipment

The General Master exam is broad because the 01 credential is broad. Current blueprint topics include hazardous locations, special occupancies, special equipment, emergency and standby systems, special conditions, equipment over 600 volts, and communications.

Be familiar with:

• Hazardous classified locations
• Health-care facilities
• Commercial garages and fuel areas
• Swimming pools and spas
• Electric signs
• Fire pumps
• Emergency systems
• Legally required standby systems
• Optional standby systems
• Photovoltaic systems
• Energy storage and interconnected systems
• Communication systems

You do not need every special article memorized. You do need to recognize the installation type and know where the NEC places the rules.

Washington Codes Is a Separate Required Section

The Washington Codes section currently contains about 20 questions and allows one hour. The key references are RCW Chapter 19.28 and WAC Chapter 296-46B.

Study:

• Master Electrician certification
• Electrical contractor licensing
• Master and Administrator assignment rules
• Electrician and trainee certification
• Permits
• Inspections
• Plan review
• Washington installation requirements
• Examination rules
• Enforcement and penalties
• Continuing education and renewal
• Washington NEC amendments

Washington Codes must be passed on its own. A great NEC score cannot average out a weak RCW/WAC performance.

Important: Exam NEC Edition vs. Washington's Current Field Code

The current PSI examination bulletin still identifies the 2020 National Electrical Code for Washington electrical examinations.

Washington's current installation rules are on the 2023 NEC. Washington has adopted the 2026 NEC with an effective date of December 31, 2026, when it is scheduled to replace the 2023 edition.

The Washington General Master Electrician Book Package is built around the current exam references: the 2020 NEC, RCW Chapter 19.28, and WAC Chapter 296-46B.

The General Master Exam Is Open Book

Washington electrical examinations are open book, but PSI and L&I enforce clear reference rules.

Current rules allow:

• Original copyrighted reference materials
• Permanent index tabs
• Highlighting and underlining in qualifying copyrighted books
• Printed RCW Chapter 19.28 and WAC Chapter 296-46B in a binder
• A silent, nonprinting, nonprogrammable calculator

Current rules prohibit or restrict:

• Sticky notes
• Removable or repositionable tabs
• Handwritten notes in references
• Unauthorized loose paper
• Noncompliant programmed calculators

Practice with the same references you plan to bring. Open-book speed comes from familiarity, not from seeing how many pounds of code books one person can carry into a testing center.

The One-Year Exam Period and Retesting

Master candidates receive examination approval from Washington L&I. The current PSI bulletin states that candidates have one year from the approval date to pass all required exam sections.

If you fail a section, the current minimum wait before retesting is 14 days. If you fail a third attempt, you must wait three months from the last failure date before future attempts.

During the active examination period, sections already passed generally do not need to be repeated. If the approval period expires before all sections are complete, reapplication can be required.

What Happens to Your Existing 01 Electrician Certificate?

When Washington issues the General Master Electrician certificate, it replaces the existing General Journey Level Electrician certificate for the same certification category.

You do not carry both the 01 electrician certificate and the General Master certificate for the same category at the same time. The Master certificate becomes the higher credential.

Unlike an Administrator certificate, the Master Electrician certificate still allows the holder to perform electrical installation work with the tools of the trade.

Assignment to an Electrical Contractor

A Washington Master Electrician can serve the administrator role for an electrical contractor when properly assigned.

Washington requires an assigned Master Electrician or Administrator to meet the firm's membership or qualifying full-time supervisory employment requirements. The role carries actual compliance responsibility rather than simply placing a certificate number on a business file.

Assignment changes must be reported through Washington's Change Assignment of Administrator/Master Certificate process. If the Master certificate expires or continuing-education requirements are not met, contractor assignment can also be affected.

Renewing a Washington General Master Electrician Certificate

Washington Master Electrician certificates renew every 3 years and expire on the certificate holder's birthday.

Current renewal requirements include 24 hours of L&I-approved continuing education:

• At least 8 hours of code update
• At least 4 hours of RCW/WAC review
• 12 additional approved hours to reach the 24-hour total

If the certificate is more than 90 days past expiration, Washington requires the holder to reapply and take the Master electrical examination to reinstate the certificate.

If you are assigned to a contractor and your certificate expires or required education is not complete, you can be unassigned from the contractor. Renewal deadlines are much friendlier when they live on a calendar instead of surprising you on your birthday.

A Practical General Master Electrician Study Plan

1. Confirm eligibility first. Make sure the four-year General Journey Level certification requirement is complete.
2. Study the official blueprint. Use the published question weights to plan your time.
3. Prioritize Wiring Methods. It is the largest individual NEC category.
4. Study Grounding & Bonding and Overcurrent Protection. Both carry major weight.
5. Work theory problems every week. Build speed with single-phase, three-phase, motor, transformer, and voltage-drop calculations.
6. Practice Major Load Calculations separately. Treat the two-hour section as its own exam.
7. Review motors, generators, special occupancies, and special equipment. The 01 scope is broad.
8. Study RCW and WAC every week. Washington Codes has its own passing score.
9. Practice open-book source selection. Identify NEC, RCW, or WAC before searching.
10. Take timed long-form practice sessions. Build the endurance needed for seven hours of testing.

Prepare for Master-Level Responsibility

The Washington General Master Electrician exam is broad because the certificate is broad. A General Master can perform electrical work and can also serve the contractor's compliance role, which means the candidate needs both technical depth and Washington-specific licensing knowledge.

Field experience provides the foundation. Exam preparation adds precision. Learn to connect the installation you already understand with the NEC article, Washington rule, calculation method, or contractor requirement that controls it.

Start with the Washington General Master Electrician collection at 1ExamPrep for exam-preparation resources.

For the core exam references, review the Washington General Master Electrician Book Package. If you need help organizing professional licensing paperwork, review 1ExamPrep application services.

For books, exam preparation, licensing expenses, and related professional costs, review 1ExamPrep financing options.

Frequently Asked Questions

Conclusion

The Washington General Master Electrician certificate is the master-level credential built on the state's broad 01 General Journey Level certification. It is designed for electricians who already have years of broad field experience and are ready to combine that experience with master-level technical knowledge and contractor-compliance responsibility.

Eligibility begins before the exam application. Washington requires General Master candidates to have been certified as General Journey Level Electricians for at least four years. That four-year requirement comes after earning the 01 certificate itself, which means General Master applicants arrive with a substantial professional foundation.

The current exam is divided into three sections. NEC & Theory contains about 80 questions and allows four hours. Washington Codes contains about 20 questions and allows one hour. Major Load Calculations contains 10 questions and allows two hours. The full structure is approximately 110 questions across seven hours, and each section requires at least 70 percent.

The technical blueprint is broad. Wiring Methods is the largest individual NEC category. General Trade Knowledge & Theory is another major block. Grounding & Bonding and Overcurrent Protection also carry significant weight. Services, motors, generators, transformers, hazardous locations, special occupancies, special equipment, emergency systems, communications, and other advanced topics complete the exam.

Major Load Calculations deserve separate preparation. Do not save them for the final weekend. Work full problems involving dwelling, multifamily, commercial, motor, HVAC, transformer, continuous, and noncoincident loads. Practice identifying the correct NEC method before reaching for the calculator.

Washington law is just as important as the NEC. RCW Chapter 19.28 and WAC Chapter 296-46B cover Master certification, electrical contractors, assignments, permits, inspections, plan review, electrician and trainee requirements, enforcement, renewal, and Washington-specific electrical rules. The Washington Codes section must be passed separately, so state-law preparation cannot be treated as a side project.

Candidates also need to keep the current code editions straight. The PSI exam bulletin still identifies the 2020 NEC for licensing examinations. Washington field installations currently use the 2023 NEC, and the 2026 NEC is scheduled to replace it on December 31, 2026. Use the exam bulletin for exam preparation and the currently adopted code for actual installations.

The exam is open book, but open book does not remove the need for preparation. It rewards people who already understand the topic and can find the exact rule quickly. Learn the structure of the NEC, RCW, and WAC, prepare permitted permanent tabs, and practice reference navigation with a timer.

After certification, the responsibility continues. The Master certificate replaces the existing 01 electrician certificate, allowing the holder to keep performing electrical work while also serving in the contractor administrator role when properly assigned. The certificate renews every three years and currently requires 24 hours of approved continuing education.

The strongest preparation plan connects four things: years of field experience, accurate code navigation, calculation skill, and Washington law. When those pieces work together, the exam becomes a test of professional judgment instead of a seven-hour argument with a stack of books.

Key Takeaways

• Washington requires a General Master Electrician candidate to have been certified as a General Journey Level Electrician for at least 4 years.
• The current exam is approximately 80 NEC & Theory questions in 4 hours, 20 Washington Codes questions in 1 hour, and 10 Major Load Calculations questions in 2 hours.
• Washington requires at least 70 percent on each section, and Master candidates need L&I approval before scheduling with PSI.
• The current exam bulletin still identifies the 2020 NEC, while Washington field installations use the 2023 NEC until the 2026 NEC takes effect December 31, 2026.
• The Master certificate replaces the existing 01 electrician certificate, renews every 3 years, and currently requires 24 hours of approved CE.

Plain-Language Summary

The Washington General Master Electrician certificate is the master-level version of the state's 01 General Journey Level Electrician certificate. It is for experienced electricians who want to keep performing electrical installation work and also take on higher-level contractor-compliance responsibility.

You cannot start with the Master exam. First, you need to be a Washington General Journey Level Electrician. Washington currently requires you to hold that certification for at least four years before you can qualify for the General Master Electrician examination.

When you are eligible, you apply to Washington Labor & Industries. L&I reviews your qualifications and gives you examination approval. You then schedule the General Master exam through PSI.

The current exam has three sections. NEC & Theory has about 80 questions and gives you four hours. Washington Codes has about 20 questions and gives you one hour. Major Load Calculations has 10 questions and gives you two hours. That is about 110 questions across seven hours. You need at least 70 percent on each section.

Wiring Methods is the largest individual NEC category. General Trade Knowledge & Theory is also heavily tested. Grounding and Bonding and Overcurrent Protection are major topics too. You should also review services, motors, transformers, generators, hazardous locations, special occupancies, special equipment, emergency systems, communications, and conductor calculations.

Major Load Calculations has its own two-hour section. Practice full service and feeder calculations, dwelling loads, multifamily loads, commercial loads, motors, HVAC, transformers, continuous loads, demand factors, and optional calculation methods.

Washington Codes comes mainly from RCW Chapter 19.28 and WAC Chapter 296-46B. These references cover Master certification, electrical contractors, assignments, permits, inspections, electrician certification, examination rules, enforcement, renewal, and Washington-specific electrical requirements.

The exam is open book. The current PSI bulletin still identifies the 2020 National Electrical Code for the examination. Washington field installations currently use the 2023 NEC, and the 2026 NEC is scheduled to take effect on December 31, 2026. This means the exam code and the field code are different in September 2026.

If you fail a section, the current PSI rules require at least a 14-day wait before retesting. After a third failed attempt, the wait increases to three months. You have one year from your L&I approval date to finish all required sections.

Once Washington issues the Master Electrician certificate, it replaces your existing 01 General Journey Level certificate. You can still perform electrical installation work and can also serve as the designated Master for an electrical contractor when properly assigned.

The certificate renews every three years and expires on your birthday. Current renewal rules require 24 hours of approved continuing education, including at least 8 hours of code update and 4 hours of RCW/WAC review.

Use the Washington General Master Electrician collection from 1ExamPrep to review study materials for the 01 Master exam, Washington electrical law and rules, Major Load Calculations, theory, and open-book code navigation.