Washington A-HVAC/R Electrician Book Package

Prepare for the Washington HVAC/Refrigeration Electrician examination with a focused book package built around the electrical code, Washington electrical law, and state administrative rules used for the 06A HVAC/Refrigeration 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 identifies HVAC/Refrigeration as electrical specialty classification 06A. This specialty covers defined electrical work associated with heating, ventilation, air-conditioning, and refrigeration systems. Candidates preparing for the 06A Electrician examination should be ready to work with motors, controllers, HVAC equipment, grounding and bonding, overcurrent protection, wiring methods, electrical equipment, electrical theory, and Washington-specific licensing and specialty rules.

Washington electrical examinations are open book. Candidates may use approved reference materials during testing, making reference navigation an important part of preparation. Candidates should become comfortable deciding whether an examination question is controlled by the NEC, RCW Chapter 19.28, or WAC Chapter 296-46B and then locating the applicable requirement efficiently.

The 06A HVAC/Refrigeration specialty includes specified low-voltage control wiring, telecommunications associated with HVAC/R systems, line-voltage components located within qualifying HVAC and refrigeration equipment, certain controller and disconnect components, limited raceway work, qualifying flexible supply connections, and other electrical work specifically permitted under Washington rules.

Although the 06A specialty is not generally limited by voltage, phase, or amperage, the work must remain within the HVAC/Refrigeration specialty scope. Holding the 06A certificate does not provide unrestricted authority to perform general electrical work outside that specialty.

This book package brings together the three core references candidates need for structured exam preparation. The NEC provides national electrical installation requirements, RCW Chapter 19.28 establishes Washington electrical law, and WAC Chapter 296-46B defines specialty scope and contains detailed requirements governing certification, supervision, examinations, contractors, permits, inspections, and electrical installations.

What You Get

• Revised Code of Washington (RCW) Chapter 19.28
  Washington's electrical law covering electricians, electrical trainees, electrical contractors, certification, electrical installations, enforcement, responsibilities, and other statutory requirements governing electrical work throughout the state.
• Washington Administrative Code (WAC) Chapter 296-46B
  Washington's detailed electrical safety, administration, certification, examination, specialty-scope, contractor, permit, inspection, supervision, and installation rules. This reference defines the 06A HVAC/Refrigeration specialty and its authorized electrical work.
• National Electrical Code, NEC, 2020 Edition
  The NEC edition used for Washington's electrical examination program. It provides technical requirements for HVAC equipment, motors, controllers, grounding and bonding, overcurrent protection, wiring methods, conductors, electrical equipment, hazardous locations, and special conditions.

These references should be studied together. The NEC establishes technical requirements, while Washington laws and rules determine whether a particular installation is within the 06A specialty and what licensing or supervision requirements apply.

Exam Details

The Washington 06A HVAC/Refrigeration Electrician examination requires candidates to demonstrate working knowledge of the National Electrical Code, Washington electrical laws and rules, and basic electrical theory.

• Classification: 06A HVAC/Refrigeration Electrician
• Certification Type: Specialty Electrician
• Required Work Experience: 4,000 hours of qualifying HVAC/Refrigeration specialty experience
• Required Basic Classroom Instruction: 48 hours for the 4,000-hour specialty pathway
• Exam Type: Open book
• Testing Provider: PSI
• NEC Edition: National Electrical Code, 2020 Edition
• Washington References: RCW Chapter 19.28 and WAC Chapter 296-46B

The examination covers technical electrical subjects connected with HVAC and refrigeration systems, along with Washington-specific electrical regulations. Candidates should prepare for motors and controllers, equipment wiring, grounding and bonding, overcurrent protection, conductor requirements, disconnecting means, wiring methods, electrical equipment, electrical theory, and specialty-scope questions.

Washington electrical examinations also require candidates to understand state licensing and certification rules. Questions may involve specialty definitions, trainee supervision, examination requirements, contractor responsibilities, permits, inspections, and the electrical work authorized under the 06A classification.

Open Book Test

The Washington HVAC/R Electrician examination is an open book test. Washington Labor & Industries permits approved reference materials in the testing center under established examination rules.

The 2020 National Electrical Code may be used. Permanent index tabs are acceptable, but 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 testing requirements.

Printed copies of RCW Chapter 19.28 and WAC Chapter 296-46B may also be brought into the examination. Printed copies of Washington's electrical laws and rules must be hole-punched and placed in a three-ring binder.

Because the examination is open book, candidates should practice using the references before test day. Familiarity with the NEC index, article organization, equipment sections, tables, definitions, exceptions, and cross-references can help reduce lookup time.

HVAC/R candidates should become especially comfortable finding motor requirements, HVAC equipment provisions, overcurrent protection rules, disconnect requirements, grounding and bonding, wiring methods, and conductor requirements.

Washington-specific navigation matters as well. Questions about the legal scope of 06A work, trainee supervision, certification, permits, inspections, or contractor requirements may require the WAC or RCW rather than the NEC.

Licensing Steps

Washington HVAC/Refrigeration Electrician certification is administered through the Washington State Department of Labor & Industries. Candidates must complete the applicable experience and education requirements before qualifying for the 06A specialty examination.

1. Begin through an electrical trainee or other qualifying pathway. Candidates generally gain supervised electrical work experience before applying for specialty certification.
2. Accumulate qualifying 06A HVAC/Refrigeration experience. Washington requires 4,000 hours of qualifying work experience for this specialty.
3. Work under appropriate supervision. Trainees must work under a specialty electrician certified for the work being performed or under a general journey level electrician.
4. Meet the minimum supervision requirement. Washington requires trainees in 4,000-hour specialties to be supervised at least 75 percent of the time.
5. Complete required classroom instruction. Candidates must complete 48 hours of qualifying basic classroom instruction for the 4,000-hour specialty pathway.
6. Maintain accurate experience records. Qualifying electrical work hours must be properly documented according to Labor & Industries requirements.
7. Apply for examination eligibility. Submit the required electrician examination application and supporting documentation to Washington Labor & Industries.
8. Receive examination approval before scheduling. Candidates should not schedule with PSI until Labor & Industries has issued its determination.
9. Prepare using the approved references. Study the 2020 NEC, RCW Chapter 19.28, and WAC Chapter 296-46B.
10. Take and pass the required examination. Complete the applicable PSI testing process and follow Washington requirements for issuance of the 06A specialty electrician certificate.

State Requirements

Washington identifies HVAC/Refrigeration as specialty electrical classification 06A. Candidates pursuing this specialty must complete 4,000 hours of qualifying work experience.

Trainees performing 06A work must be supervised by an appropriately certified specialty electrician or by a general journey level electrician. Washington requires trainees in this 4,000-hour specialty to receive supervision at least 75 percent of the time.

Candidates must also complete 48 hours of basic classroom instruction as part of the qualification requirements for examination or applicable trainee renewal requirements.

The 06A HVAC/Refrigeration specialty is not generally limited by voltage, phase, or amperage. However, all electrical work must remain within the HVAC/Refrigeration scope established by Washington rules.

The specialty includes specified telecommunications and Class 2 low-voltage control wiring associated with HVAC and refrigeration systems. Washington's scope rules also authorize specified line-voltage component work within HVAC/R equipment and limited work involving controllers, disconnecting means, raceways used for physical protection, and qualifying supply connections.

Washington places additional restrictions on trainees working on HVAC/Refrigeration systems that contain circuits rated over 600 volts. Candidates should understand these supervision requirements as part of the state-code portion of their preparation.

The 06A classification does not create unrestricted authority to install general line-voltage services, feeders, branch circuits, external disconnect switches, or controllers outside the specialty scope. Candidates should study WAC 296-46B-920 carefully to understand the exact limits.

Washington also allows qualifying experience from the 06B HVAC/Refrigeration Restricted specialty to be credited toward the work-experience requirement for 06A certification under the applicable rules.

Reference Books

• Revised Code of Washington (RCW) Chapter 19.28
  This reference contains Washington electrical statutes governing electricians, electrical trainees, contractors, certification, installations, enforcement, and legal responsibilities. It provides the statutory foundation for Washington's electrical licensing system.
• Washington Administrative Code (WAC) Chapter 296-46B
  This reference contains Washington specialty classifications, trainee supervision rules, certification procedures, examination requirements, permits, inspections, contractor responsibilities, and detailed HVAC/Refrigeration specialty provisions.
• National Electrical Code, NEC, 2020 Edition
  The NEC provides technical requirements for HVAC and refrigeration equipment, motors, motor controllers, overcurrent protection, grounding and bonding, wiring methods, conductors, disconnecting means, hazardous locations, and other electrical installations relevant to 06A work.

Candidates should study these books as an integrated reference set. The NEC provides the technical installation rule, while Washington laws and rules determine specialty authority, supervision requirements, and certification responsibilities.

Exam Room Approved Books

• National Electrical Code, NEC, 2020 Edition
  The 2020 NEC is permitted during Washington electrical examinations. Permanent index tabs, highlighting, and underlining are allowed under examination rules, while handwritten notes, removable tabs, and sticky notes are prohibited.
• Revised Code of Washington (RCW) Chapter 19.28
  Printed copies of Washington electrical law may be brought into the examination when prepared according to Labor & Industries testing requirements.
• Washington Administrative Code (WAC) Chapter 296-46B
  Printed copies of Washington electrical rules may be used during testing and should be prepared according to the applicable testing-center requirements.

Using the same references during preparation and on examination day helps candidates build familiarity with the organization of the materials and the location of frequently used provisions.

Test Information and Study Materials

Motors and HVAC Equipment: HVAC and refrigeration systems depend heavily on motor-driven equipment. Review motor conductor sizing, overload protection, short-circuit and ground-fault protection, disconnecting means, controllers, HVAC equipment, refrigeration equipment, transformers, and related NEC requirements.

Overcurrent Protection: Study circuit breakers, fuses, conductor protection, equipment protection, motor branch-circuit requirements, maximum overcurrent protection, and equipment nameplate information.

Grounding and Bonding: Review equipment grounding conductors, bonding, grounding electrode systems, service grounding, separately derived systems, enclosures, raceways, and grounding requirements associated with HVAC/R equipment.

Wiring Methods: Study cables, raceways, flexible wiring methods, boxes, fittings, equipment connections, conductor protection, support requirements, wet and damp locations, and wiring methods commonly used around heating and refrigeration equipment.

Electrical Equipment: Review disconnects, controllers, transformers, switches, utilization equipment, flexible cords, and other provisions that can affect HVAC and refrigeration installations.

Equipment Over 600 Volts: Candidates should understand the NEC requirements associated with higher-voltage equipment as well as Washington's special supervision rules affecting trainees working on HVAC/R systems with circuits over 600 volts.

Hazardous Locations: Review classified-location concepts, equipment suitability, wiring methods, and installation restrictions that may apply to certain refrigeration or mechanical environments.

Electrical Theory: Practice voltage, current, resistance, power, Ohm's law, motor calculations, conductor calculations, control concepts, and general trade mathematics relevant to HVAC/R electrical work.

Washington HVAC/R Specialty Scope: Study WAC 296-46B-920 carefully. Candidates should understand which electrical activities fall within 06A and which require another electrical classification.

Washington Laws and Rules: Review work-experience requirements, trainee supervision, certification, examinations, permits, inspections, electrical contractor responsibilities, and state-specific HVAC/R electrical provisions.

A useful study method is to identify the likely source of each practice question before beginning a lookup. Technical installation questions may point toward the NEC, while specialty-scope or licensing questions may require WAC Chapter 296-46B or RCW Chapter 19.28.

Timed reference practice can help candidates become more efficient. Practice finding motor rules, overcurrent requirements, grounding provisions, equipment disconnect requirements, HVAC/R specialty limits, and Washington supervision rules until using the books becomes a natural part of the problem-solving process.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Washington HVAC/R Electrician candidates organize their preparation around the three core references in this package: the 2020 National Electrical Code, RCW Chapter 19.28, and WAC Chapter 296-46B.

The package supports trade-focused review of HVAC and refrigeration equipment, motors, controls, wiring methods, grounding and bonding, overcurrent protection, electrical equipment, electrical theory, specialty scope, and Washington-specific electrical requirements.

1 Exam Prep encourages practical reference navigation for the open-book examination. Candidates can strengthen their study process by reading a question, identifying the subject, selecting the correct reference, locating the applicable requirement, and applying it accurately.

Trade-focused preparation can help HVAC/R technicians connect field experience with exact code language. Candidates may already know how equipment is installed or serviced, but the examination requires familiarity with the NEC and Washington rules that govern those activities.

Washington-specific preparation is especially important because the 06A specialty has defined limits. Candidates should understand both the work the certification authorizes and the electrical work that remains outside the HVAC/Refrigeration scope.

The goal is to combine practical HVAC/R experience with organized code study, stronger electrical theory, Washington regulatory knowledge, and efficient reference navigation. This Washington A-HVAC/R Electrician Book Package provides the core materials needed to support that preparation.

Frequently Asked Questions

What is the official Washington HVAC/R Electrician classification?

Washington identifies HVAC/Refrigeration as electrical specialty classification 06A.

What books are included in this package?

This package includes RCW Chapter 19.28, WAC Chapter 296-46B, and the 2020 National Electrical Code.

Is the Washington HVAC/R Electrician exam open book?

Yes. Washington electrical examinations are open book under the applicable Labor & Industries testing rules.

How much experience is required for the 06A HVAC/R specialty?

Washington requires 4,000 hours of qualifying work experience for the 06A HVAC/Refrigeration specialty.

Is classroom instruction required?

Yes. Candidates in the 4,000-hour specialty pathway must complete 48 hours of qualifying basic classroom instruction.

What supervision is required for an HVAC/R trainee?

Trainees must work under an appropriately certified specialty electrician or general journey level electrician and must be supervised at least 75 percent of the time.

Is the 06A specialty limited by voltage, phase, or amperage?

The 06A HVAC/Refrigeration specialty is not generally limited by voltage, phase, or amperage, but all work must remain within the HVAC/Refrigeration specialty scope established by Washington rules.

Can an HVAC/R Electrician perform unrestricted general electrical work?

No. The 06A certificate is a specialty certification. Work must remain within the HVAC/Refrigeration scope unless the electrician holds another certification authorizing additional electrical work.

Can 06B experience count toward 06A certification?

Washington allows qualifying 06B HVAC/Refrigeration Restricted experience to be credited toward the 4,000-hour experience requirement for 06A certification under applicable state rules.

Which NEC edition is used for the Washington exam?

The examination program covered by this package uses the 2020 National Electrical Code.

Can I bring the 2020 NEC into the examination?

Yes. The 2020 NEC is permitted under Washington electrical examination rules.

Can I bring RCW 19.28 and WAC 296-46B into the exam?

Yes. Printed copies of both Washington electrical references may be used when prepared according to Labor & Industries testing requirements.

Who administers the Washington HVAC/R Electrician examination?

Washington electrical examinations are administered through PSI after the applicable eligibility review and approval process through Washington Labor & Industries.

What should I focus on while studying?

Focus on motors and HVAC equipment, overcurrent protection, grounding and bonding, wiring methods, electrical equipment, electrical theory, HVAC/R specialty scope, trainee supervision, and Washington electrical laws and rules.

Why is WAC 296-46B important for the 06A exam?

WAC 296-46B contains the detailed scope of the HVAC/Refrigeration specialty along with examination, certification, supervision, permit, inspection, contractor, and other Washington-specific electrical requirements.