Iowa Irrigation System Wiring Contractor - Books & Courses Rental Package

Prepare for the Iowa Irrigation System Wiring Examination with a books and courses rental package designed around the current Iowa specialty electrical exam and the 2023 National Electrical Code. This package combines highlighted and tabbed rental books with 6 months of course access to support organized preparation for irrigation-system wiring, electrical code navigation, electrical calculations, wiring and protection, low-voltage circuits, equipment, and irrigation-system design concepts.

The package includes three rental references: the National Electrical Code Handbook, 2023, Ugly's Electrical References, and Simplified Irrigation Design, 2nd Edition, 1995. All books are supplied highlighted and tabbed to help candidates organize their study and locate important information more efficiently.

The Iowa Irrigation System Wiring credential is issued as an endorsement on the state's Special Electrician license. The examination is administered through PSI for the Iowa Electrical Examining Board. Current Iowa testing is based on the 2023 National Electrical Code.

The 2023 National Electrical Code Handbook is the exam-room-approved reference included in this package. PSI permits candidates to use either the 2023 NEC or the 2023 NEC Handbook during the examination. The approved book may be highlighted, underlined, indexed, and prepared with permanent tabs before testing.

Ugly's Electrical References and Simplified Irrigation Design are included as study resources. They support electrical calculations, trade knowledge, irrigation design principles, system layout, and other preparation topics, but they are not approved for use inside the current PSI examination center.

Please allow up to 15 business days for book & course rental package orders.

The package price is $890 plus a refundable deposit of $200, for a total initial payment of $1,090. All books supplied with this package are rental books and are highlighted and tabbed for organized study.

Exam Details

The current Iowa Irrigation System Wiring Examination contains 50 scored questions. Candidates receive 120 minutes to complete the scored portion and must achieve at least 70% correct to pass.

The examination also contains 5 non-scored questions. PSI provides an additional 15 minutes for those questions. Non-scored questions are used for examination development and do not affect the candidate's final score.

The current examination content outline is:

• General Knowledge – 12%
• Wiring and Protection – 20%
• Wiring Methods and Materials – 20%
• Equipment for General Use – 20%
• Special Equipment – 14%
• Low Voltage – 14%

Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use each account for 20% of the examination. Together, these three areas make up 60% of the scored test, making them important areas for concentrated preparation.

Special Equipment and Low Voltage each account for 14%, while General Knowledge represents 12%. Candidates should study every category because irrigation-system wiring combines traditional electrical requirements with specialized controls, outdoor equipment, pumps, low-voltage circuits, conductors, and irrigation-system components.

Open Book Test

The Iowa Irrigation System Wiring examination is an open book test, but candidates may use only approved reference material inside the examination center.

PSI currently permits candidates to use either the NFPA 70 National Electrical Code, 2023 Edition or the NFPA 70 National Electrical Code Handbook, 2023. This rental package includes the 2023 NEC Handbook.

The approved NEC reference may be highlighted, underlined, and indexed before testing. Permanent tabs are also permitted. Permanent tabs should be attached in a manner that complies with PSI's reference rules.

Temporary removable tabs and loose additional papers are not permitted. Candidates should complete all permitted highlighting and tabbing before the examination.

Ugly's Electrical References is not allowed inside the examination center. It is included in the rental package for study of electrical formulas, conductor information, voltage drop, grounding, motors, transformers, conversions, and practical calculations.

Simplified Irrigation Design, 2nd Edition is also a study-only reference and is not approved for use inside the examination center. Candidates should use it during preparation to strengthen their understanding of irrigation-system components, controls, system layout, hydraulics, and design concepts.

The highlighted and tabbed NEC Handbook should become the candidate's primary exam-navigation tool. Repeated use throughout preparation can help reduce search time when working through questions involving grounding, overcurrent protection, wiring methods, equipment, motors, low-voltage systems, and outdoor installations.

Licensing Steps

Iowa electrical licensing is overseen by the Iowa Electrical Examining Board within the Department of Inspections, Appeals, and Licensing. Irrigation System Wiring is a specialty endorsement associated with the Iowa Special Electrician license.

1. Select the Irrigation System Wiring endorsement. Candidates seeking this specialty apply for the applicable Special Electrician credential.
2. Choose the qualification pathway. Iowa permits applicants to qualify for the Irrigation System Wiring endorsement by passing a Board-approved supervised examination or through qualifying documented experience.
3. Submit the applicable Iowa license application. Candidates using the examination pathway complete the licensing application required by the Electrical Examining Board.
4. Request testing sponsorship. State sponsorship must be obtained before scheduling the examination with PSI.
5. Receive authorization to test. After Board approval, candidates may schedule the Irrigation System Wiring examination.
6. Prepare for the 2023 NEC-based exam. Study all six examination content areas and practice electrical calculations, code navigation, low-voltage concepts, and irrigation-related electrical applications.
7. Use the highlighted and tabbed books throughout preparation. Build familiarity with important NEC articles while using the other references to strengthen electrical and irrigation-system knowledge.
8. Take the PSI examination. The scored portion contains 50 questions and provides 120 minutes.
9. Earn at least 70%. Candidates using the examination pathway must meet the current passing standard.
10. Complete the remaining licensing process. Follow the Iowa Electrical Examining Board requirements for issuance of the Special Electrician license with the Irrigation System Wiring endorsement.

State Requirements

Iowa identifies Irrigation System Wiring as a Special Electrician endorsement. The credential applies specifically to the specialized electrical work covered by the endorsement rather than the unrestricted scope associated with a Class A Master or Journeyman Electrician license.

Current Iowa requirements provide two ways to qualify for the Irrigation System Wiring endorsement. An applicant may pass a written supervised examination approved by the Iowa Electrical Examining Board or complete two years, or 4,000 hours, of documented experience in the wiring of irrigation systems.

Applicants choosing the examination pathway do not need prior license or experience requirements solely to receive sponsorship for the Irrigation System Wiring exam. They must, however, complete Iowa's testing sponsorship process before scheduling with PSI.

A passing score of 70% or higher on the approved PSI examination satisfies the examination component for the Irrigation System Wiring Special Electrician endorsement.

Iowa currently uses the 2023 National Electrical Code for statewide electrical requirements. Current state licensing guidance also confirms that PSI is testing electrical candidates using the 2023 NEC.

Effective June 2, 2026, Iowa electrical installations returned to the unamended 2023 NEC as the statewide minimum standard except for exclusions or changes specifically contained in Iowa law.

Reference Books

• National Electrical Code Handbook, 2023
  Included Rental Book: A highlighted and tabbed rental copy of the primary code reference approved for the current Iowa Irrigation System Wiring examination. The Handbook contains the complete 2023 NEC together with explanatory material covering conductors, branch circuits, grounding and bonding, wiring methods, protection, equipment, motors, controls, low-voltage systems, and other electrical requirements relevant to irrigation installations.
• Ugly's Electrical References
  Included Rental Book: A highlighted and tabbed practical electrical study reference covering formulas, Ohm's law, conductor information, voltage drop, grounding, motors, transformers, electrical calculations, conversions, and commonly used field data. This book is included for study and is not approved for use inside the current PSI examination center.
• Simplified Irrigation Design, 2nd Edition, 1995
  Included Rental Book: A highlighted and tabbed study reference covering irrigation-system design principles, water distribution, system layout, piping, controls, hydraulics, sprinkler selection, and practical irrigation concepts. This book is intended for study and is not an approved exam-room reference for the current PSI examination.

Exam Room Approved Books

• National Electrical Code Handbook, 2023
  The NEC Handbook included with this rental package is approved for use during the current Iowa Irrigation System Wiring examination. PSI permits either the 2023 NEC or the 2023 NEC Handbook.

Ugly's Electrical References and Simplified Irrigation Design, 2nd Edition are study resources and are not approved for use inside the current examination center.

Test Information and Study Materials

General Knowledge represents 12% of the examination. Candidates should understand electrical terminology, voltage, current, resistance, power, conductor properties, electrical calculations, and the basic relationship between electrical systems and irrigation equipment.

Ugly's Electrical References can support preparation in this area. Use it to review Ohm's law, voltage drop, current, power, conductor values, motor information, and other electrical calculations, then practice similar questions without relying on the book because it will not be available during the actual exam.

Wiring and Protection accounts for 20%. Review branch circuits, conductor sizing, overcurrent protection, grounding and bonding, equipment protection, disconnecting means, and other NEC requirements that protect electrical systems and users.

Irrigation equipment commonly operates outdoors and may be exposed to moisture, underground conditions, weather, or physical damage. Candidates should understand how these conditions affect wiring, equipment, enclosures, raceways, grounding, and protection.

Wiring Methods and Materials also accounts for 20%. Study conductors, cables, raceways, boxes, fittings, enclosures, underground wiring, burial requirements, outdoor installations, wet and damp locations, support, and protection from physical damage.

Practice moving between general wiring rules and the sections that apply to specific equipment or installation conditions. Irrigation-system questions can require several NEC concepts to be applied together.

Equipment for General Use makes up another 20%. Review motors, switches, controllers, disconnects, transformers, receptacles, equipment connections, and other electrical components commonly associated with irrigation pumps and control systems.

Motor-related questions can involve conductor sizing, overload protection, short-circuit and ground-fault protection, controllers, disconnecting means, and grounding. These requirements serve different purposes, so candidates should learn to identify which rule applies to each part of the installation.

Special Equipment represents 14%. Study electrical equipment governed by specialized NEC requirements and practice recognizing when a specific article supplements or modifies general wiring rules.

Low Voltage also represents 14% of the test. Irrigation systems frequently use low-voltage controls for valves, controllers, sensors, and other system components. Candidates should understand applicable low-voltage wiring requirements and how those circuits interact with line-voltage electrical equipment.

Simplified Irrigation Design can be used during the course-access period to build a broader understanding of irrigation-system operation. Studying controllers, valves, zones, piping, water distribution, sprinkler selection, pressure, and system layout can help candidates interpret electrical questions within the context of an operating irrigation system.

The highlighted and tabbed NEC Handbook should remain the primary reference for examination practice. Candidates should repeatedly locate common topics such as grounding, conductors, raceways, motors, outdoor installations, low-voltage systems, and equipment protection until the navigation process becomes familiar.

The scored examination provides 120 minutes for 50 questions, giving candidates an average of approximately 2.4 minutes per scored question. Efficient code navigation can preserve valuable time for electrical calculations and questions requiring several code steps.

The included 6 months of course access gives candidates a structured study period in which to combine course review with the highlighted and tabbed rental books. Preparation can be organized around the published PSI content percentages so that all six examination categories receive attention.

When a practice question is missed, determine whether the problem came from electrical theory, NEC navigation, incorrect conductor or protection selection, misunderstanding a low-voltage circuit, or insufficient irrigation-system knowledge. Targeting the cause of the error can make future study more productive.

Please allow up to 15 business days for book & course rental package orders.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Iowa Irrigation System Wiring candidates through organized study guidance, electrical trade-focused review, irrigation-related preparation, practice-oriented study, electrical calculations, and NEC reference-navigation practice.

The highlighted and tabbed National Electrical Code Handbook, 2023 provides an organized code reference candidates can use throughout preparation and during the open-book examination when used according to PSI rules.

The included Ugly's Electrical References supports preparation involving formulas, voltage drop, conductor information, grounding, motors, transformers, and practical electrical calculations.

Simplified Irrigation Design, 2nd Edition adds irrigation-specific study material covering system layout, water distribution, controls, hydraulics, and other concepts that can help candidates understand the systems they will be wiring.

The package also includes 6 months of course access, providing a structured period for combining course preparation with repeated use of the highlighted and tabbed rental references.

1 Exam Prep encourages candidates to organize study around General Knowledge, Wiring and Protection, Wiring Methods and Materials, Equipment for General Use, Special Equipment, and Low Voltage. The goal is to strengthen electrical knowledge, improve NEC navigation, reinforce irrigation-system understanding, and provide a more organized path toward examination preparation.

How many questions are on the Iowa Irrigation System Wiring exam?

The current examination contains 50 scored questions plus 5 non-scored questions.

How much time is allowed?

Candidates receive 120 minutes for the scored portion and an additional 15 minutes for the non-scored questions.

What score is required to pass?

The current passing requirement is 70%.

Is the Iowa Irrigation System Wiring examination open book?

Yes. The examination is an open book test using the approved 2023 NEC or 2023 NEC Handbook.

Can the 2023 NEC Handbook be used during the exam?

Yes. PSI currently permits the 2023 National Electrical Code Handbook as an approved examination reference.

Can Ugly's Electrical References be used during the exam?

No. Ugly's Electrical References is not approved for use inside the current examination center. It is included as a highlighted and tabbed rental study resource.

Can Simplified Irrigation Design be used during the exam?

No. Simplified Irrigation Design, 2nd Edition is included for study but is not an approved exam-room reference for the current PSI examination.

Are all of the rental books highlighted and tabbed?

Yes. All three rental books included with this package are supplied highlighted and tabbed. Only the approved NEC reference may be used inside the testing center.

How long is the course access?

The package includes 6 months of course access.

What is the price of the Iowa Irrigation System Wiring Contractor Books & Courses Rental Package?

The package price is $890 plus a refundable deposit of $200, for a total initial payment of $1,090.

Is the $200 deposit refundable?

Yes. The $200 portion of the initial payment is identified as a refundable deposit.

What Iowa license covers irrigation system wiring?

Iowa issues Irrigation System Wiring as an endorsement on the Special Electrician license.

Can I qualify through experience instead of the exam?

Yes. Iowa currently allows an applicant to qualify by passing the approved examination or by documenting two years, or 4,000 hours, of experience in irrigation-system wiring.

Do I need prior experience to receive sponsorship for the exam?

Current Iowa testing sponsorship requirements do not impose a prior license or experiential requirement solely to be sponsored for the Irrigation System Wiring Special Electrician examination.

Which NEC edition is used on the current exam?

The current Iowa Irrigation System Wiring examination is based on the 2023 National Electrical Code.

How long should I allow for the rental package order?

Please allow up to 15 business days for book & course rental package orders.

Why choose the Iowa Irrigation System Wiring Contractor Books & Courses Rental Package?

The package combines highlighted and tabbed electrical and irrigation references with 6 months of course access, providing an organized approach to NEC navigation, electrical calculations, low-voltage wiring, irrigation-system knowledge, and preparation across the current Iowa Irrigation System Wiring examination outline.