What Is Washington Pump & Irrigation 03?

Washington identifies 03 as the Pump and Irrigation electrical specialty.

The specialty is limited to qualifying electrical connections used to supply domestic water systems, public water systems, irrigation pumps, pump houses, controls, and related equipment.

The 03 scope can include electrical connections involving:

• Circuits.
• Feeders.
• Electrical services.
• Motor controls.
• Low-voltage systems.
• Related telecommunications.
• Pumps.
• Pressurization equipment.
• Filtration systems.
• Water-treatment equipment.
• Irrigation water pumps.
• Circular irrigation system pumps.
• Pump houses.
• Associated controls and equipment.

Domestic and Public Water Systems Are Included

The 03 specialty covers qualifying electrical work associated with both domestic water systems and public water systems.

Those systems can include much more than the pump itself.

• Water pumps.
• Pressure systems.
• Pressure tanks and related controls.
• Filtration equipment.
• Water-treatment equipment.
• Motor controllers.
• Control panels.
• Low-voltage signaling systems.
• Electrical services and feeders serving the system.

A pump electrician therefore needs to understand the complete electrical path from the permitted service or feeder through control equipment and down to the actual motor-driven equipment.

Irrigation Systems Are Part of the Specialty

Unlike the narrower 03A Domestic Pump certificate, 03 includes qualifying irrigation water pumps.

This can involve agricultural and other irrigation installations where electrical power is needed for pumps, controls, associated equipment, and pump houses.

The specialty specifically recognizes circular irrigation system pumps and pump houses.

Services and Feeders Can Be Within the 03 Scope

One of the biggest differences between 03 and 03A is that the broader Pump & Irrigation specialty expressly includes qualifying electrical services and feeders.

That means candidates need to study more than motors and controls.

You should also understand:

• Service conductors.
• Service equipment.
• Service disconnects.
• Feeder conductors.
• Overcurrent protection.
• Grounding and bonding.
• Equipment grounding.
• Wiring methods.
• Conductor sizing.

This broader scope is reflected directly in the current examination blueprint, which includes dedicated questions on NEC Article 230 Services and on Wiring & Protection.

Motors and Controls Are Core 03 Skills

Pumps are motor-driven equipment, so motor rules belong near the center of your exam preparation.

Real pump installations may include motors, starters, controllers, pressure switches, variable-speed equipment, overload protection, short-circuit protection, disconnects, transformers, signaling circuits, and automated control systems.

A strong Pump & Irrigation electrician needs to understand how these pieces work together rather than treating each NEC rule as an isolated fact.

The 03 Specialty May Perform 03A Domestic Pump Work

Washington specifically allows the Pump & Irrigation 03 specialty to perform the work defined under Domestic Pump 03A.

That means a properly certified 03 electrician can perform qualifying 03A residential potable-water and residential sewage-disposal pump work.

The reverse is not true. A 03A Domestic Pump certificate does not automatically authorize the broader services, feeders, irrigation pumps, public water systems, and pump-house work included in 03.

03 Requires 4,000 Hours of Qualifying Experience

Because 03 is a 4,000-hour specialty, it does not use the 1,000-hour or 720-hour early-testing path available in some of Washington's 2,000-hour specialty classifications.

Supervision While Training

Washington requires trainees working toward a 4,000-hour specialty such as Pump & Irrigation to work under an electrician who is appropriately certified for the work being performed.

The required supervision is at least 75 percent of the time.

This is different from certain 2,000-hour specialties where trainees remain under 100 percent supervision until passing the examination and may later qualify for a modified zero-percent-supervision training certificate.

Basic Classroom Instruction

Washington requires trainees in 4,000-hour specialties to complete 48 hours of approved basic classroom instruction.

Basic trainee education can cover subjects such as:

• Basic electrical theory.
• National Electrical Code fundamentals.
• Washington electrical laws and rules.
• Electrical safety.
• Trade calculations.
• Wiring methods.
• Grounding and bonding.
• Motor and control fundamentals.

Keep your education record current instead of waiting until the last minute. Discovering that your work hours are complete but your classroom record is not is the licensing version of reaching the airport and realizing your passport is on the kitchen counter.

Keep Accurate Experience Records

Labor & Industries reviews experience and education before approving an electrician candidate for testing.

Keep records showing:

• Your employer.
• Your dates of employment.
• Your qualifying specialty hours.
• The type of pump or irrigation electrical work performed.
• Your supervising electrician.
• The specialty under which you worked.

Document your experience as you earn it. Four thousand hours is a long time to reconstruct from memory after the fact.

The Current 03 Electrician Exam at a Glance

Current 03 Pump & Irrigation Electrician Exam Blueprint

The number of questions in an individual knowledge area is approximate. The blueprint still gives you a very useful picture of where your study time should go.

Wiring Methods Are the Largest NEC Category

NEC 300 through 398 contributes approximately five questions to the current electrician technical section.

Review:

• Conductors and cables.
• Raceways.
• Boxes and fittings.
• Underground installations.
• Wet and damp locations.
• Outdoor wiring.
• Protection from physical damage.
• Support and securing requirements.
• Pump-house wiring.
• Equipment connections.

Pump and irrigation work spends plenty of time around water, dirt, weather, underground raceways, and outdoor equipment. Wiring methods are not exactly a surprise guest on this exam.

Grounding and Bonding Are About Four Questions

NEC 250 contributes approximately four questions.

Review grounding and bonding around services, feeders, pumps, control equipment, metallic raceways, motor equipment, and pump houses.

Be comfortable with:

• Equipment grounding conductors.
• Bonding.
• Grounding electrodes where applicable.
• Grounding electrode conductors.
• Fault-current paths.
• Service bonding.
• Equipment grounding connections.

Instead of memorizing every grounding term as a separate vocabulary card, picture where current needs to travel if an energized conductor contacts metal equipment.

Motors and Related Equipment Are About Four Questions

NEC 430 through 450 contributes approximately four questions.

Pumps mean motors, so this is one of the highest-value subjects on the examination.

• Motor full-load current.
• Branch-circuit conductor sizing.
• Motor overload protection.
• Short-circuit and ground-fault protection.
• Controllers.
• Disconnecting means.
• Motor tables.
• Nameplate information.
• Transformers.
• Generator-related rules where applicable.

Practice recognizing which motor rule a question is asking about. Conductor sizing, overload protection, and branch-circuit short-circuit protection are different calculations.

General Trade Knowledge and Theory Is About Four Questions

The current technical blueprint gives approximately four questions to General Trade Knowledge and Theory.

Review:

• Ohm's law.
• Voltage.
• Current.
• Resistance.
• Power.
• Series and parallel circuits.
• AC fundamentals.
• Electrical measurements.
• Basic troubleshooting.
• Trade calculations.

Theory questions can save exam time because a candidate who understands the calculation may not need to open any reference at all.

Wiring & Protection Is About Three Questions

NEC 200-225 and 280-285 contribute approximately three questions.

Review branch circuits, feeders, outside branch circuits and feeders, surge protection concepts, conductor identification, and other requirements included in these article ranges.

This category matters more in 03 than in 03A because the broader Pump & Irrigation scope can include feeders and other upstream electrical work.

Overcurrent Protection Is About Three Questions

NEC Article 240 contributes approximately three questions.

Study standard overcurrent device ratings, conductor protection, equipment protection, permitted conductor rules, and how general overcurrent requirements interact with motor rules.

Always identify what is actually being protected before choosing a calculation.

Services Are About Two Questions

NEC Article 230 contributes approximately two questions to the current electrician technical section.

Because the 03 specialty can include qualifying services, candidates should understand:

• Service conductors.
• Service equipment.
• Service disconnects.
• Service ratings.
• Locations.
• Grounding and bonding.

Equipment Over 600 Volts Appears on the Exam

The current 03 electrician outline includes approximately one question from NEC Article 490.

That should tell you something important about the specialty: it is not restricted to the small residential pump limits associated with 03A.

Review the general organization and safety concepts for equipment over 600 volts so you can recognize where to find the governing requirement.

Hazardous Locations and Special Conditions

The current blueprint includes approximately one Hazardous Locations question and two Special Conditions questions.

Pump houses, treatment facilities, industrial water systems, and related installations can place electrical equipment in environments that require special attention.

You do not need to turn every pump house into a chemistry experiment, but you should understand how to identify when special NEC articles may control the installation.

Washington Codes Are 17 Questions

The Washington Laws & Rules section contains approximately 17 questions and gives you one hour.

Study:

• Chapter 19.28 RCW.
• Chapter 296-46B WAC.
• WAC 296-46B-920 specialty scope.
• WAC 296-46B-945 experience requirements.
• Trainee supervision.
• Electrician certification.
• Electrical contractors.
• Permits.
• Inspections.
• Renewal.
• Continuing education.

Do not leave Washington law until the night before the test. Seventeen questions is far too many points to treat as bonus material.

The Current Exam Is Open Book

Washington's current electrical examinations are open book.

The current core references are:

• 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 testing area.

Removable tabs, sticky notes, handwritten notes, and loose notes are not permitted under the current rules.

Printed RCW and WAC materials may be brought when prepared according to Washington and PSI requirements. A silent, nonprinting, nonprogrammable calculator is also allowed.

Exam NEC vs. Washington Field NEC

The current licensing-exam bulletin still identifies the 2020 National Electrical Code for examination purposes.

Washington field installations currently use the 2023 NEC.

The 2026 NEC is scheduled to replace the 2023 edition for Washington field installations on December 31, 2026.

Keep those timelines separate. The code being enforced on a job and the code edition identified for a licensing examination do not always change on the same date.

A Practical Open-Book Exam Strategy

1. Learn the exact 03 scope. Know domestic water, public water, irrigation, pumps, pump houses, controls, circuits, feeders, and services.
2. Know that 03 includes 03A work.
3. Practice Wiring Methods heavily.
4. Practice Grounding & Bonding.
5. Know motor calculations and Article 430 navigation.
6. Review Wiring & Protection.
7. Study Services and Overcurrent Protection.
8. Practice basic electrical theory without a book.
9. Review Article 490 and specialty conditions.
10. Practice RCW and WAC lookups.
11. Take 34-question technical practice sections in two hours.
12. Take 17-question Washington Codes sections in one hour.

Apply Through Labor & Industries Before PSI

Electrician candidates must first qualify through Washington Labor & Industries.

Before applying for the 03 exam, make sure your state record reflects the required 4,000 qualifying specialty hours and required classroom education.

L&I reviews the application and experience. After approval, you receive an examination eligibility notice containing the information needed to schedule with PSI.

The current exam rules give electrician candidates one year from the approval date to pass all required sections.

For help organizing the licensing process, review 1 Exam Prep application services.

Retesting Rules

If you fail an examination or one of its required sections, Washington's current testing process requires a waiting period before your next attempt.

You generally wait at least 14 days before retesting.

If you fail an exam or section three times within a one-year examination period, you must wait 90 days between future attempts until the examination is successfully completed.

During the active one-year period, you do not have to repeat sections you already passed. If the examination period expires before all sections are passed, you must go through the applicable approval process again.

Current Exam and Certification Fees

Fees can change, so verify the amount in effect when you apply, test, or renew.

For the core NEC, RCW, and WAC references used for Pump & Irrigation preparation, review the Washington Pump & Irrigation electrical reference package.

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

Renewal and Continuing Education

Washington specialty electrician certificates normally renew every three years.

The original certificate expires on the electrician's birthdate at least two years and not more than three years after original issuance. Renewed certificates are valid for three years.

A normal three-year certification period requires 24 hours of approved continuing education.

• 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 its related WAC.
• The remaining hours may cover other approved industry-related electrical subjects.

If a certificate remains expired for more than 90 days, Washington generally requires the electrician to pass the appropriate examination again before being recertified.

A Practical Pump & Irrigation Study Plan

1. Start with WAC 296-46B-920. Know exactly what 03 can do.
2. Compare 03 with 03A. Understand why services, feeders, public water, and irrigation make 03 broader.
3. Study NEC 300-398 Wiring Methods.
4. Study NEC 250 Grounding & Bonding.
5. Study NEC 430 motors and controls.
6. Review NEC 200-225 Wiring & Protection.
7. Study NEC 240 Overcurrent Protection.
8. Study NEC 230 Services.
9. Practice General Trade Knowledge & Theory.
10. Review Article 490 and special conditions.
11. Study WAC 296-46B-945 experience requirements.
12. Practice open-book navigation under a timer.

Use the Washington Pump & Irrigation Electrician collection to organize your specialty-focused exam preparation.

Study Like a Pump & Irrigation Electrician

A useful study method is to picture an actual pump installation and work through the electrical system from beginning to end.

Start with scope. Is the equipment part of a domestic water system, public water system, irrigation system, pump house, pressurization system, filtration system, or treatment system? Does the job fit specialty 03?

Next look at the supply. Is there a service or feeder? What conductors are required? What disconnect applies? How is the system grounded and bonded? What overcurrent protection is required?

Then move to the pump. What motor rules apply? What size conductors are required? What overload protection applies? What controller is used? Where is the disconnect? What does the nameplate tell you?

Finally, examine the wiring method. Is the equipment outside, underground, exposed to moisture, subject to physical damage, or inside a pump house?

That process turns exam questions into a familiar job sequence instead of a collection of random article numbers.

Frequently Asked Questions

Conclusion

The Washington 03 Pump & Irrigation Electrician certificate is a broad specialty built around electrical systems that move, pressurize, treat, and control water. It includes qualifying electrical work for domestic water systems, public water systems, irrigation pumps, circular irrigation systems, pump houses, filtration equipment, treatment equipment, and associated controls.

The legal scope is one of the first things candidates should learn because 03 is very different from Domestic Pump 03A. The broader 03 specialty can include qualifying circuits, feeders, services, controls, low-voltage systems, and related telecommunications. It may also perform the work included in 03A.

That broader electrical authority explains why the 03 examination covers services, feeders, motors, grounding, wiring methods, equipment over 600 volts, and other subjects that do not receive the same emphasis on the narrower Domestic Pump exam.

The training path requires 4,000 qualifying specialty hours for both exam eligibility and certification. Trainees in this 4,000-hour specialty must work under the required appropriate supervision at least 75 percent of the time and complete 48 hours of approved basic classroom instruction.

Keeping accurate experience and education records matters. Labor & Industries reviews these requirements before granting exam approval. The best time to organize the paperwork is while you are earning the hours, not two years later when every service call has blended into one long memory of pumps, mud, and control boxes.

The current Pump & Irrigation Electrician examination has two required sections. NEC and Theory contains approximately 34 scored questions and allows two hours. Washington Codes contains approximately 17 scored questions and allows one hour. That creates 51 published scored questions across three section-hours.

Wiring Methods is the largest technical NEC category with approximately five questions. Grounding and Bonding contributes about four. Motors, HVAC, Generators and Transformers contributes about four, and General Trade Knowledge and Theory contributes another four.

Wiring and Protection and Overcurrent Protection contribute approximately three questions each. Services contributes about two. Electrical Equipment and Special Conditions also receive attention, along with equipment over 600 volts, hazardous locations, and special equipment.

The Washington Codes section is a major part of the test. Candidates should study specialty scope, certification, experience requirements, trainee supervision, electrical contractors, permits, inspections, renewal, and continuing education.

The current examination is open book. The PSI bulletin currently identifies the 2020 National Electrical Code, current Chapter 19.28 RCW, and current Chapter 296-46B WAC as the core references. Approved permanent tabs, highlighting, and underlining can help, but candidates should practice finding information before test day.

Washington field installations currently use the 2023 NEC. The state has scheduled the 2026 NEC to replace the 2023 edition for field installations on December 31, 2026. Exam candidates should keep watching the current PSI bulletin because exam reference editions do not always change at the same time as field-code adoption.

The application process begins with Labor & Industries. L&I verifies the candidate's experience and training before issuing exam approval. Once approved, candidates schedule the correct 03 electrician examination with PSI.

The current three-hour electrician exam fee is $65. Washington currently charges $114.60 for the specialty electrician application, which includes the original certificate and processing fee.

After certification, specialty electricians normally renew on a three-year cycle. Current renewal is $92.60 when completed online and $106.40 when completed by mail, fax, or in person.

A normal three-year certification period requires 24 hours of approved continuing education. At least eight hours must cover changes in the currently adopted electrical code, and four hours must cover current Washington RCW or WAC requirements.

The strongest exam preparation connects the specialty scope to an actual pump system. Begin at the service or feeder, follow the conductors through protection and disconnecting equipment, inspect grounding and bonding, examine the controller, and finish at the motor and pump.

Then ask whether the installation is actually within specialty 03. That combination of scope knowledge and technical NEC knowledge is what turns a pile of code articles into a usable electrical system.

Key Takeaways

• Washington 03 covers qualifying electrical services, feeders, circuits, controls, low-voltage systems, telecommunications, pumps, water systems, irrigation systems, and pump houses.
• The specialty requires 4,000 qualifying hours for exam eligibility and certification, plus 48 hours of approved basic classroom instruction.
• Trainees in this 4,000-hour specialty require appropriate supervision at least 75 percent of the time.
• The current exam has 34 NEC/Theory questions in two hours plus 17 Washington Codes questions in one hour, for 51 scored questions.
• Focus heavily on wiring methods, grounding and bonding, motors, theory, overcurrent protection, services, specialty scope, and Washington electrical laws.

Plain-Language Summary

The Washington 03 Pump & Irrigation Electrician certificate is for electricians who perform qualifying electrical work on pumps, water systems, irrigation systems, pump houses, filtration equipment, treatment equipment, pressurization systems, and related controls.

This certificate is broader than Washington's 03A Domestic Pump certificate. A 03 electrician can work with qualifying circuits, feeders, services, controls, low-voltage systems, and related telecommunications. The 03 specialty can also perform work that falls under 03A.

Domestic and public water systems are included. Irrigation pumps and circular irrigation systems are included too. This makes 03 useful for electrical work involving residential water, public water, agricultural irrigation, pump houses, treatment equipment, and other qualifying water-related systems.

Washington currently requires 4,000 qualifying Pump & Irrigation hours before a candidate can become eligible for the electrician examination. Full certification also requires 4,000 hours.

Trainees in this 4,000-hour specialty must work under appropriate supervision at least 75 percent of the time. They must also complete 48 hours of approved basic classroom instruction.

The current 03 electrician exam contains approximately 34 NEC and Theory questions. Candidates receive two hours for this section. Washington Codes contains approximately 17 questions and allows one hour. That produces 51 published scored questions across three section-hours.

Wiring Methods is the largest technical category, with about five questions. Grounding and Bonding contributes about four questions. Motors and related equipment contribute about four. General Trade Knowledge and Theory contributes another four.

Wiring and Protection and Overcurrent Protection contribute about three questions each. Services contributes about two. Candidates should also prepare for electrical equipment, equipment over 600 volts, hazardous locations, special equipment, and special conditions.

The Washington Codes section tests state laws and rules. Important topics include the Pump & Irrigation specialty scope, work-experience requirements, trainee supervision, electrician certification, electrical contractors, permits, inspections, renewal, and continuing education.

The current exam is open book. PSI currently identifies the 2020 National Electrical Code, current RCW Chapter 19.28, and current WAC Chapter 296-46B as the main references.

The current passing score is 70 percent. Electrician candidates first apply through Washington Labor & Industries. L&I verifies experience and education before allowing the candidate to schedule with PSI.

The current three-hour PSI exam costs $65. Washington currently charges $114.60 for the specialty electrician application including the original certificate and processing fee.

Current specialty electrician renewal costs $92.60 online or $106.40 by mail, fax, or in person.

A normal three-year certification period requires 24 hours of approved continuing education. At least eight hours must cover electrical-code changes and at least four hours must cover Washington RCW or WAC requirements.

The best way to prepare is to study a pump installation as one complete system. Start with the service or feeder, move through overcurrent protection and wiring methods, check grounding and bonding, study the motor controller, and finish at the pump. Then ask whether every part of the job remains inside the legal 03 scope.

Use the Washington Pump & Irrigation Electrician collection from 1 Exam Prep to organize your preparation around the current specialty and examination.