What Is a Washington Electrical Administrator?

An electrical administrator helps ensure an electrical contractor performs work in compliance with Washington electrical law, administrative rules, licensing requirements, and applicable electrical codes.

Electrical contractors generally need an appropriately designated administrator or master electrician whose certification supports the contractor's work.

An administrator may also hold an electrician certificate. If so, that individual may personally perform electrical work within the electrician certificate's scope while properly employed by an electrical contractor.

No Experience Is Required Before the Administrator Exam

Washington currently places no work-experience or qualification prerequisite on an administrator examination candidate.

This makes the path different from specialty electrician and master electrician certification.

What Is the Washington 06B Restricted HVAC/R Scope?

06B is a restricted HVAC/refrigeration electrical specialty.

The biggest electrical limit applies to the HVAC/R system's primary electrical power connection.

Residential Low-Voltage HVAC/R Controls

06B may install, repair, replace, and maintain HVAC/refrigeration telecommunications and Class 2 low-voltage control circuit wiring and components in residential occupancies.

This can include qualifying:

• Thermostat circuits.
• Class 2 HVAC/R controls.
• Control wiring.
• HVAC/R telecommunications wiring.
• Sensors.
• Control components associated with qualifying equipment.

The work must remain part of the HVAC/refrigeration system and within the restrictions of the specialty.

Nonresidential Low-Voltage Work Has an Occupancy Limit

06B may also install, repair, replace, or maintain qualifying HVAC/R telecommunications and Class 2 low-voltage controls in nonresidential occupancies that have no more than three stories on or above grade.

This is an important difference from the broader 06A specialty.

A question can describe perfectly ordinary thermostat or control wiring and still fall outside the specialty because the building does not fit the permitted occupancy conditions.

Line-Voltage Components Inside HVAC/R Equipment

06B may install, repair, replace, and maintain qualifying line-voltage components located within HVAC/refrigeration equipment.

This can include product-illumination luminaires installed within and powered from qualifying refrigeration equipment, such as those found in reach-in beverage coolers, frozen-food cases, and produce cases.

The specialty may also work with new or replacement factory-authorized accessories such as internally mounted outlets.

The location of the component matters. A component inside qualifying HVAC/R equipment can be within scope while a similar stand-alone component mounted elsewhere may not be.

Internal Disconnect and Controller Components

06B may repair, replace, or maintain internal components of the HVAC/R equipment's disconnecting means or controller when that disconnect or controller is not located within a motor control center or panelboard.

This authority does not create general permission to install external line-voltage disconnects or controllers.

When studying scope questions, pay close attention to words such as internal, external, equipment, and panelboard. One small location change can move the work outside 06B.

The Six-Foot Flexible Supply Whip Rule

06B may repair, replace, or maintain line-voltage flexible supply whips that are not more than six feet long.

The work cannot modify the characteristics of the branch-circuit or feeder load being supplied by the whip, except that a reduction in the HVAC unit's rated maximum overcurrent protection size is allowed under the specialty rule.

The replacement whip does not have to use the same raceway method. An approved metallic method can, for example, be replaced by an approved nonmetallic method.

Short Raceway Sections Have a Narrow Purpose

06B may install, repair, replace, and maintain short sections of raceway when they provide physical protection for low-voltage cables.

For this specialty, the short section cannot mechanically interconnect two devices, junction boxes, pieces of equipment, or other components.

There is another important restriction: 06B may not use the allowed low-voltage HVAC/R wiring as a general conduit or raceway wiring system.

In other words, a short protective sleeve and a complete raceway system are not the same thing. The exam may be very interested in whether you notice the difference.

External Disconnects Are Generally Outside 06B

06B generally may not install line-voltage controllers or disconnect switches external to HVAC/refrigeration equipment.

Washington provides a narrow exception when HVAC/R equipment is being replaced.

Under the exception, 06B may remove and replace a disconnecting-means enclosure mounted on the surface of the HVAC/R equipment with a like-in-kind enclosure rated not more than 20 amperes and 120 volts using the existing wiring method.

When performing that specific work, the specialty may install up to 10 feet of raceway to physically protect nonmetallic cables, but the raceway may not terminate in a panelboard.

General Building Electrical Work Is Outside the Specialty

06B is an HVAC/R specialty, not a small general electrical license wearing a tool belt.

The specialty generally may not install, repair, replace, or maintain:

• General raceway or conduit systems.
• Line-voltage service conductors.
• General feeder conductors.
• General branch-circuit conductors.
• External panelboards.
• External switchboards.
• External motor control centers.
• General building or structure lighting.
• Integrated building-control systems other than HVAC/refrigeration systems.

Washington does provide a limited exception involving conductors from supplementary overcurrent protection inside qualifying HVAC/R arrangements when the required equipment is within sight, so always read the complete facts of a question.

Stand-Alone Line-Voltage Equipment Is Restricted

06B generally does not cover stand-alone line-voltage equipment such as heat cable, wall heaters, radiant-panel heaters, baseboard heaters, contactors, motor starters, and similar components just because heating or cooling is somehow involved.

Washington provides exceptions when the equipment is exclusively controlled by the HVAC/R system and requires an integral mechanical connection, or when the HVAC/refrigeration mechanical system is contained within the equipment itself.

That distinction is worth practicing because "it heats something" and "it is part of the HVAC/R system" are not automatically the same answer.

General Building Lighting Is Outside 06B

06B does not include luminaires that serve as a building or structure lighting source, even when the luminaire is mechanically associated with HVAC/R equipment.

Examples include personnel lighting in a walk-in cooler or freezer and a troffer luminaire used as a return-air device.

Product illumination located within and powered from qualifying refrigeration equipment is different and may fall within the specialty.

Classified-Location Work Is Restricted

06B may not perform electrical work governed by the specified NEC hazardous-location articles when the work falls under the specialty's classified-location restriction.

The current PSI blueprint still includes approximately one hazardous-location question, so candidates should understand both the technical NEC concepts and the licensing limitation.

This is a good example of why scope and code should be studied together. The NEC may explain how a hazardous-location installation must be built, while Washington licensing rules determine whether 06B is allowed to perform that work.

06B vs. 06A HVAC/Refrigeration

Washington's 06A HVAC/Refrigeration specialty is broader than 06B.

06A is not generally limited by voltage, phase, or amperage. 06B is restricted at the primary electrical power connection to no more than 250 volts, single phase, and 120 amps.

06A also has broader HVAC/R low-voltage authority under certain nonresidential occupancy conditions.

For an administrator, understanding this difference is essential. A contractor holding a restricted 06B specialty should not perform work that actually requires the broader 06A scope simply because both licenses contain the letters HVAC/R.

What Does an Assigned 06B Administrator Do?

An assigned 06B administrator is responsible for helping ensure the electrical contractor complies with Washington electrical law and stays inside the restricted HVAC/R specialty.

The administrator should understand:

• 06B voltage, phase, and amperage limitations.
• Occupancy limitations.
• HVAC/R equipment boundaries.
• Electrician certification requirements.
• Trainee supervision.
• Electrical permits.
• Inspection requirements.
• NEC requirements.
• Washington amendments.
• RCW 19.28.
• WAC 296-46B.
• Electrical contractor requirements.

The administrator's job is not simply to know what the equipment does. The administrator also needs to know whether the contractor is legally allowed to touch it.

Assignment to an Electrical Contractor

Receiving the administrator certificate does not automatically make you the designated administrator for an electrical contractor.

Assignment is a separate process.

An assigned administrator must meet Washington's requirements for being a qualifying member of the firm or an appropriate full-time supervisory employee.

The current state fee for assignment or unassignment of a master electrician or administrator designation is $53.00.

The Current 06B Administrator Exam at a Glance

Current 06B Administrator Exam Blueprint

The number of questions in an individual category is approximate. Notice what is not emphasized in the 06B administrator outline: there is no separate Wiring & Protection category and no Equipment Over 600 Volts category. That matches the restricted nature of the specialty.

General Trade Knowledge and Theory Is About Five Questions

The current technical blueprint assigns approximately five questions to General Trade Knowledge and Theory.

Review:

• Voltage.
• Current.
• Resistance.
• Power.
• Ohm's law.
• Series and parallel circuits.
• Basic AC theory.
• Electrical measurements.
• HVAC/R troubleshooting concepts.
• Equipment ratings.
• General electrical trade math.

Theory questions are good places to save time. Every answer you know without opening a book leaves more time for the NEC questions that enjoy hiding behind exceptions.

Overcurrent Protection Is About Four Questions

NEC 240 contributes approximately four questions.

Review conductor protection, standard overcurrent device ratings, equipment protection, and how general overcurrent rules work alongside motor and HVAC-specific requirements.

Be careful not to confuse conductor overcurrent protection, motor overload protection, and short-circuit or ground-fault protection. They may all involve current, but they are not interchangeable.

Grounding and Bonding Is About Four Questions

NEC 250 contributes approximately four questions.

Review:

• Equipment grounding conductors.
• Bonding.
• Effective fault-current paths.
• Grounding concepts.
• Equipment connections.
• Grounding and bonding around HVAC/R systems.

Grounding is much easier to understand when you picture where fault current needs to travel instead of memorizing fifteen terms that all seem determined to use the word "ground."

Wiring Methods Are About Four Questions

NEC 300 through 398 contributes approximately four questions.

Study:

• Conductor installation.
• Raceways and cable methods.
• Boxes and fittings.
• Wet and damp locations.
• Protection from physical damage.
• Supports and securing.
• Outdoor wiring.
• HVAC/R equipment connections.

Also keep the licensing limitation separate from the technical rule. The NEC may allow a wiring method while 06B may still lack authority to install that raceway system.

Motors and HVAC Equipment Are About Four Questions

NEC 430 through 450 contributes approximately four questions to the current administrator technical section.

Review:

• Motor full-load current.
• Motor-compressor circuits.
• Branch-circuit conductor concepts.
• Short-circuit and ground-fault protection.
• Motor overload protection.
• Controllers.
• Disconnecting means.
• Equipment nameplates.
• Transformers.
• Common HVAC/R calculations.

Motors and compressors are not exactly surprise guests at an HVAC/R exam, so this topic deserves more than a quick wave on your way to test day.

The Washington Codes Section Has 17 Questions

The Washington Laws & Rules section currently contains 17 questions and allows one hour.

Study:

• Chapter 19.28 RCW.
• Chapter 296-46B WAC.
• WAC 296-46B-920 specialty scope.
• Administrator certification.
• Administrator assignment.
• Electrical contractor licensing.
• Electrician certification.
• Trainee requirements.
• Permits and inspections.
• Renewal.
• Continuing education.

For an administrator, Washington law is not the boring section after the electrical material. It is half the reason the administrator role exists.

The Current Exam Is Open Book

The current PSI bulletin identifies Washington electrical examinations as open book.

The current core references include:

• 2020 National Electrical Code.
• Current Chapter 19.28 RCW.
• Current Chapter 296-46B WAC.

Original copyrighted references may contain highlighting, underlining, and permanent index tabs prepared before entering the exam area.

Post-It notes, repositionable tabs, and removable notes are not permitted. Candidates may not write in their references during the examination.

Printed Washington RCW and WAC material may be used when prepared according to PSI's current binder rules. A silent, nonprinting, nonprogrammable calculator is also allowed.

Open-Book Strategy for the 06B Administrator Exam

1. Memorize 250V, single phase, 120A. These are the basic 06B limits.
2. Know the nonresidential three-story rule.
3. Know the six-foot supply-whip rule.
4. Learn the external-disconnect restriction and narrow replacement exception.
5. Know the difference between short protective raceway and a general raceway system.
6. Study NEC 240 and 250.
7. Study wiring methods and motor/HVAC rules.
8. Practice theory questions without book lookup.
9. Study administrator, contractor, and certification rules.
10. Take 30-question technical practice sections in two hours.
11. Take 17-question Washington Codes practice sections in one hour.

Register Directly With PSI

Administrator candidates currently register directly with PSI.

No prior L&I approval is required to sit for the administrator exam.

PSI charges according to examination time for most non-master exams. The 06B Administrator exam totals three section-hours, and the current three-hour fee is $65.

Current PSI rules require a passing score of 70 percent.

Apply for the Administrator Certificate Within 90 Days

Passing the examination does not automatically issue the administrator certificate.

After completing the appropriate examination, submit the required passing report and administrator certification information to Washington Labor & Industries.

The complete original-certificate information must be submitted within 90 days after completion of the examination.

If that window is missed, Washington requires the complete examination to be successfully retaken.

For licensing-paperwork assistance, review 1 Exam Prep application services.

Current 06B Administrator Fees

The current administrator renewal fee completed in person, by mail, or by fax is $202.20.

These Washington fees became effective July 1, 2026. Always verify the live amount at payment time because fees may change.

For exam books, licensing expenses, and preparation costs, review 1 Exam Prep financing options.

Renewal and Continuing Education

Renewed Washington electrical administrator certificates are normally valid for three years and expire on the certificate holder's birthdate.

Washington requires at least eight hours of approved continuing education for each year of the prior certification period. A normal three-year period therefore requires 24 approved hours.

• At least 8 hours must cover changes in the currently adopted electrical code.
• At least 4 hours must cover current Chapter 19.28 RCW and/or related WAC requirements.
• The remaining required hours may cover other approved industry-related subjects.

An administrator certificate may be renewed within 90 days after expiration by paying the applicable late fee. After more than 90 days, the renewal is denied and the administrator must pass the appropriate examination again before recertification.

A Practical 06B Administrator Study Plan

1. Start with WAC 296-46B-920. Learn the exact restricted HVAC/R scope.
2. Memorize 250 volts, single phase, and 120 amps.
3. Learn the three-story nonresidential low-voltage boundary.
4. Memorize the six-foot flexible-whip rule.
5. Study the external disconnect exception.
6. Learn what raceway work is allowed and prohibited.
7. Study NEC 240 and NEC 250.
8. Study wiring methods and motor/HVAC rules.
9. Practice General Trade Knowledge & Theory.
10. Study administrator and electrical-contractor requirements.
11. Practice RCW/WAC navigation.
12. Take 30-question technical sections in two hours and 17-question Washington sections in one hour.

Use the Washington B-HVAC/R Restricted Administrator collection from 1 Exam Prep to organize your specialty-focused preparation.

Study Like a Restricted HVAC/R Administrator

A useful way to study is to imagine a real HVAC/R job and work through three separate questions.

First, check scope. What is the primary electrical power connection? Is it 250 volts or less? Is it single phase? Is it 120 amps or less? Is the building within the applicable occupancy limitation? Is the electrical work inside the HVAC/R equipment or part of general premises wiring?

Second, check the technical installation. What motor rule applies? What overcurrent protection is required? How should the equipment be grounded? What wiring method is permitted? Does the disconnect comply with the NEC?

Third, check contractor compliance. Is the contractor properly licensed? Are the electricians properly certified? Are trainees correctly supervised? Is a permit required? Is the work really within 06B rather than 06A?

That three-part process, scope, electrical code, and contractor compliance, is exactly the kind of thinking an administrator needs after the test is over too.

Frequently Asked Questions

Conclusion

The Washington 06B HVAC/Refrigeration Restricted Administrator certificate is designed for professionals responsible for electrical-contractor compliance within a carefully limited HVAC/R specialty. The administrator needs to understand both the technical electrical rules and the licensing boundaries that separate 06B work from broader HVAC/R and general electrical work.

The first numbers to memorize are simple: 250 volts, single phase, and 120 amps. The 06B specialty may not perform electrical work when the HVAC/R system's primary electrical power connection exceeds those limits. Those numbers should become automatic because they can eliminate an out-of-scope job before you spend five minutes searching the NEC.

06B can perform qualifying HVAC/R telecommunications and Class 2 low-voltage control work in residential occupancies. In nonresidential occupancies, the specialty can perform qualifying low-voltage work when the building has no more than three stories on or above grade.

The specialty can also work on qualifying line-voltage components located within HVAC/refrigeration equipment, repair or replace certain internal disconnect and controller components, install short sections of raceway for physical protection of low-voltage cables, and repair, replace, or maintain qualifying flexible supply whips up to six feet long.

Those permissions come with boundaries. A short protective raceway section is not general authority to build a conduit system. An internal equipment component is not the same thing as an external disconnect. HVAC/R control wiring is not permission to install general building branch circuits.

External line-voltage controllers and disconnect switches are generally outside 06B. Washington provides a narrow exception during qualifying equipment replacement for certain surface-mounted like-in-kind disconnect enclosures rated not more than 20 amps and 120 volts. That exception also permits a limited amount of protective raceway under specific conditions.

06B generally does not include general building lighting, services, feeders, general branch-circuit conductors, external panelboards, switchboards, or motor control centers. Integrated building controls outside the HVAC/R system are also outside the normal specialty.

The administrator pathway itself has no work-experience prerequisite. Administrator candidates currently register directly with PSI without first obtaining L&I approval. That makes the pathway accessible, but it does not make the exam casual.

The current 06B Administrator examination contains approximately 30 NEC and Theory questions and 17 Washington Codes questions. The technical section allows two hours, while the Washington section allows one hour. The published total is 47 scored questions across three section-hours.

The technical blueprint gives approximately five questions to General Trade Knowledge and Theory. Overcurrent Protection, Grounding and Bonding, Wiring Methods, and Motors/HVAC/Generators/Transformers contribute about four questions each. General Requirements adds about three, with Electrical Equipment, Special Conditions, Introduction, and Hazardous Locations making up the rest.

The Washington Codes section is critical because an administrator's job is based on compliance. Candidates should understand specialty scope, administrator certification, assignment, contractor licensing, electrician certification, trainee requirements, permits, inspections, renewal, and continuing education.

The current PSI bulletin identifies the examination as open book and bases code questions on the 2020 National Electrical Code together with current RCW 19.28 and WAC 296-46B. Permanent tabs, highlighting, and underlining are permitted under current rules, while removable notes and repositionable tabs are prohibited.

The current passing score is 70 percent. The three-hour exam currently costs $65 through PSI.

After passing, candidates have 90 days to submit the required information for the original administrator certificate. Missing that window can require taking the complete examination again, which is a fairly expensive way to discover that calendars are useful.

Current Washington fees effective July 1, 2026 include $160 for the original administrator certificate, $175.70 for online renewal, $202.20 for renewal by mail, fax, or in person, and $53 for administrator or master assignment or unassignment.

Administrator certificates normally renew every three years. A normal three-year period requires 24 hours of approved continuing education, including at least eight hours of electrical-code update and four hours covering current Washington RCW/WAC requirements.

The best preparation combines three kinds of knowledge. Learn exactly where 06B begins and ends. Learn the NEC rules governing the equipment that fits the specialty. Then learn the Washington contractor and certification rules governing who may perform the work.

If you can look at a job and answer "Does this fit 06B?", "Is it electrically correct?", and "Is the contractor handling it legally?", you are preparing for the administrator role instead of simply preparing for another multiple-choice exam.

Key Takeaways

• 06B is limited to HVAC/R systems whose primary electrical power connection does not exceed 250 volts, single phase, or 120 amps.
• Washington currently has no work-experience prerequisite for taking the 06B Administrator examination.
• The current exam contains about 30 NEC/Theory questions in two hours plus 17 Washington Codes questions in one hour.
• The current exam is open book, requires 70 percent to pass, and currently uses the 2020 NEC plus current RCW 19.28 and WAC 296-46B.
• Focus on restricted scope, theory, overcurrent protection, grounding and bonding, wiring methods, motors, administrator duties, and Washington contractor rules.

Plain-Language Summary

The Washington 06B HVAC/R Restricted Administrator certificate is for a person responsible for helping an electrical contractor follow Washington electrical laws and rules while performing restricted HVAC and refrigeration electrical work.

The most important 06B limits are 250 volts, single phase, and 120 amps. If the HVAC/R system's primary electrical power connection exceeds those limits, the work is outside the 06B specialty.

06B can perform qualifying HVAC/R telecommunications and Class 2 low-voltage controls in residential occupancies. It can also perform qualifying low-voltage HVAC/R work in nonresidential buildings with no more than three stories on or above grade.

The specialty can install, repair, replace, and maintain qualifying line-voltage components located inside HVAC/R equipment. It can also repair and replace internal components of qualifying HVAC/R disconnecting means and controllers when they are not located in a motor control center or panelboard.

06B can install short sections of raceway for physical protection of low-voltage cables, but those short sections cannot mechanically interconnect equipment or become a general raceway system.

The specialty may repair, replace, or maintain flexible line-voltage supply whips not more than six feet long as long as the supplying branch-circuit or feeder characteristics are not improperly changed.

06B generally cannot install external line-voltage disconnects or controllers. Washington provides a narrow like-in-kind replacement exception during certain HVAC/R equipment replacements.

The specialty also generally excludes general services, feeders, branch circuits, external panelboards, switchboards, motor control centers, general building lighting, and integrated building-control systems outside HVAC/R.

Washington currently does not require work experience before taking an electrical administrator exam. Administrator candidates register directly with PSI without first receiving L&I exam approval.

The current 06B Administrator exam contains approximately 30 NEC and Theory questions. Candidates receive two hours for that section. The Washington Codes section contains 17 questions and allows one hour. That produces 47 published scored questions across three section-hours.

The current technical outline gives about five questions to General Trade Knowledge and Theory. Overcurrent Protection, Grounding and Bonding, Wiring Methods, and Motors/HVAC/Generators/Transformers contribute about four questions each.

The Washington Codes section tests laws and rules dealing with specialty scope, contractors, administrators, electricians, trainees, permits, inspections, renewal, and continuing education.

The current exam is open book. PSI currently identifies the 2020 National Electrical Code, current RCW 19.28, and current WAC 296-46B as the core law and code references. The passing score is currently 70 percent.

PSI currently charges $65 for the three-hour exam. Washington currently charges $160 for the original electrical administrator certificate. Online renewal is $175.70, and renewal by mail, fax, or in person is $202.20.

After passing the exam, submit the required original-certificate information within 90 days. Administrator certificates normally renew every three years, and a normal three-year renewal period requires 24 hours of approved continuing education.

Good preparation starts with scope. Memorize 250 volts, single phase, and 120 amps. Learn the three-story commercial control-wiring limit, the six-foot whip rule, external-disconnect restrictions, and raceway limits. Then study overcurrent protection, grounding and bonding, wiring methods, motors, theory, and Washington law.

Use the Washington B-HVAC/R Restricted Administrator collection from 1 Exam Prep to organize your preparation around the current specialty and exam.