Iowa Irrigation System Wiring Contractor - Highlighted and Tabbed Book Package

Prepare for the Iowa Irrigation System Wiring Examination with a focused highlighted and tabbed book package covering the 2023 National Electrical Code, electrical calculations, irrigation-system design principles, wiring and protection, wiring methods, electrical equipment, low-voltage systems, and specialized electrical requirements associated with irrigation installations.

The Iowa Irrigation System Wiring credential is issued as an Irrigation System Wiring endorsement on an Iowa Special Electrician license. The examination is administered through PSI for the Iowa Electrical Examining Board and provides an examination pathway for applicants seeking authorization to perform this specialized class of electrical work.

This package includes the National Electrical Code Handbook, 2023, Ugly's Electrical References, and Simplified Irrigation Design, 2nd Edition. Together, these references support preparation involving electrical code requirements, electrical theory and calculations, low-voltage wiring, equipment, conductors, protection, irrigation controls, and the broader design principles behind irrigation systems.

The 2023 National Electrical Code Handbook is highlighted and permanently tabbed to help candidates develop faster reference-navigation skills. Under the current PSI examination rules, the 2023 NEC or 2023 NEC Handbook is the reference permitted in the testing center. The approved reference may be highlighted, underlined, indexed, and prepared with permanent tabs before the examination.

Please allow up to 15 business days for tabbed and highlighted book package orders.

Ugly's Electrical References and Simplified Irrigation Design are valuable study references, but they are not permitted inside the examination center under the current PSI reference list. Candidates should use these books during preparation to strengthen electrical calculations, irrigation-system understanding, and trade knowledge before transitioning to timed practice with only the approved NEC Handbook.

What You Get

• National Electrical Code Handbook, 2023 – Highlighted and Tabbed
  The primary electrical code reference included in the package and an approved reference for the current Iowa Irrigation System Wiring examination. Highlighting and permanent tabs support faster navigation during study and testing.
• Ugly's Electrical References
  A practical study resource covering electrical formulas, conductors, grounding, voltage drop, motors, transformers, conversions, and electrical calculations. This book is used for preparation and is not currently allowed in the examination center.
• Simplified Irrigation Design, 2nd Edition, 1995
  A study reference covering irrigation-system planning and design concepts, water distribution, system components, controls, layout, hydraulics, and practical irrigation considerations. This reference is not currently allowed in the examination center.

Please allow up to 15 business days for tabbed and highlighted book package orders.

Exam Details

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

The examination also includes 5 non-scored questions. PSI provides an additional 15 minutes for these 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 scored examination. Together, these three areas make up 60% of the published test outline and should receive substantial preparation time.

Special Equipment and Low Voltage each account for 14%, while General Knowledge accounts for 12%. The combination reflects the specialized nature of irrigation electrical work, where conventional electrical-code requirements interact with controls, pumps, outdoor equipment, low-voltage circuits, and irrigation-system components.

Open Book Test

The Iowa Irrigation System Wiring examination is an open book test, but only specifically approved reference material may be brought into 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 package includes the 2023 NEC Handbook.

The approved reference may be highlighted, underlined, and indexed before testing. Permanent tabs are also allowed. PSI defines permanent tabs as tabs that would tear the page if removed.

Temporary or removable tabs, including Post-it-style tabs, are not permitted. Candidates may not bring additional loose or attached papers with their approved reference. Handwritten notes are not permitted in the book, and candidates may not write, highlight, underline, or index the reference during the examination session.

Ugly's Electrical References and Simplified Irrigation Design are not allowed inside the examination center. Both references should be used during preparation, but exam-day practice should eventually be completed using only the approved NEC Handbook.

The highlighted and tabbed format can help candidates quickly move to frequently tested NEC subjects involving conductors, branch circuits, grounding and bonding, overcurrent protection, raceways, equipment, motors, control circuits, outdoor installations, wet locations, and low-voltage systems.

Licensing Steps

Iowa electrical licensing is administered by the Iowa Electrical Examining Board within the Department of Inspections, Appeals, and Licensing. Irrigation system wiring is treated as a specialty electrical classification and appears as an endorsement on the Special Electrician license.

1. Select the Irrigation System Wiring endorsement. Applicants seeking this specialty request the Irrigation System Wiring endorsement on the Iowa Special Electrician license.
2. Choose the applicable qualification pathway. Iowa permits applicants to qualify through the Board-approved examination or through documented irrigation-system wiring experience.
3. Apply for testing sponsorship when using the examination pathway. Candidates must obtain approval from the Iowa Electrical Examining Board before scheduling the PSI examination.
4. Receive authorization to test. After the Board approves the sponsorship request, the candidate may proceed with PSI scheduling.
5. Prepare for the Irrigation System Wiring examination. Study the 2023 NEC, electrical theory, irrigation-system design, wiring methods, protection, equipment, low-voltage circuits, and special equipment.
6. Practice with the highlighted and tabbed NEC Handbook. Become familiar with the permanent-tab layout and practice locating code requirements within the time available.
7. Complete the PSI examination. The scored portion contains 50 questions and provides 120 minutes.
8. Earn the required passing score. Candidates must answer at least 70% of the scored questions correctly.
9. Complete the Special Electrician licensing process. Follow the Iowa Electrical Examining Board requirements for issuance of the license with the Irrigation System Wiring endorsement.

State Requirements

Iowa law defines a Special Electrician as a person with the qualifications, training, and experience necessary to perform specialized classes of electrical work, including irrigation system wiring.

The Irrigation System Wiring specialty is identified as Endorsement 1 on the Iowa Special Electrician license.

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

The examination pathway uses the PSI Irrigation System Wiring test. Candidates who choose this route must first obtain testing sponsorship from the Iowa Electrical Examining Board before scheduling the examination.

Iowa's current testing sponsorship information confirms that a passing score of 70% or higher on the state PSI examination can be used to qualify for the Special Electrician license with the Irrigation System Wiring endorsement.

The Irrigation System Wiring endorsement is a specialized electrical credential rather than the same license as a Class A Master Electrician, Journeyman Electrician, Residential Electrician, or Residential Master Electrician license. Its authority is tied to the specialty identified on the endorsement.

Iowa currently applies the 2023 National Electrical Code as the statewide minimum electrical standard, subject to applicable provisions enacted in Iowa law. The current PSI Irrigation System Wiring examination also uses the 2023 NEC as its approved code reference.

Reference Books

• National Electrical Code Handbook, 2023
  The primary code reference in this package and an approved reference for the Iowa Irrigation System Wiring examination. It contains the full 2023 National Electrical Code along with explanatory material supporting study of branch circuits, conductors, grounding and bonding, overcurrent protection, wiring methods, equipment, motors, control circuits, special equipment, and low-voltage electrical installations.
• Ugly's Electrical References
  A compact electrical study reference covering electrical formulas, Ohm's law, conductor information, voltage drop, grounding, transformers, motors, conversions, and other practical electrical calculations. It is included for study but is not currently allowed inside the PSI examination center.
• Simplified Irrigation Design, 2nd Edition, 1995
  Provides practical irrigation-design information involving system layout, hydraulics, water distribution, sprinkler selection, piping, control concepts, and the design principles behind efficient irrigation systems. It is included as a study reference but is not currently permitted inside the examination center.

Exam Room Approved Books

• National Electrical Code Handbook, 2023
  This is the book from this package that is approved for use inside the current Iowa Irrigation System Wiring examination center. PSI also permits the standard 2023 National Electrical Code as an alternative, but candidates use one approved NEC reference.

Ugly's Electrical References and Simplified Irrigation Design, 2nd Edition are study-only references and are not currently allowed in the examination center.

Test Information and Study Materials

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

Ugly's Electrical References can support preparation for electrical calculations. Practice Ohm's law, voltage drop, conductor properties, current, power, and other formulas, then transition to solving similar problems without Ugly's because it cannot be used during the actual examination.

Wiring and Protection accounts for 20%. Review branch circuits, feeders, overcurrent protection, grounding and bonding, conductor sizing, disconnecting means, equipment protection, and electrical requirements that apply to irrigation-system installations.

Irrigation equipment frequently operates outdoors or in wet environments. Candidates should understand NEC requirements that protect wiring, equipment, and users where moisture, weather, grounding, and physical damage are concerns.

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

Practice navigating between general wiring requirements and more specialized rules. A question about an irrigation installation may require candidates to apply conductor rules, raceway provisions, underground-installation requirements, and equipment provisions together.

Equipment for General Use makes up another 20%. Review motors, controllers, disconnecting means, transformers, switches, receptacles, equipment connections, and other components that may be associated with irrigation pumps and control systems.

Motor and pump installations can involve several separate NEC requirements, including conductors, overload protection, short-circuit and ground-fault protection, disconnects, controllers, and grounding. Candidates should learn to identify which requirement a question is testing.

Special Equipment represents 14%. Preparation should include electrical equipment and installations governed by specialized NEC provisions. Candidates should develop the habit of recognizing when general electrical rules are supplemented by an equipment-specific article.

Low Voltage also represents 14%. Irrigation systems commonly use low-voltage control wiring for valves, controllers, sensors, and related components. Candidates should understand how low-voltage circuits interact with line-voltage equipment and which NEC requirements apply to the wiring methods used.

Simplified Irrigation Design can help candidates understand the system behind the electrical components. Learning how controllers, zones, valves, piping, water demand, sprinkler placement, and system layout interact can make irrigation-related electrical questions easier to interpret.

The NEC Handbook remains the most important reference for exam-day preparation because it is the only book in this package permitted inside the examination center. Candidates should repeatedly practice using the highlighted and tabbed Handbook until common articles and tables become familiar.

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

When reviewing missed practice questions, determine whether the problem involved electrical theory, NEC navigation, equipment, low-voltage wiring, irrigation-system knowledge, or calculation accuracy. Use that information to direct the next study session.

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, calculation practice, and open-book NEC navigation.

The Iowa Irrigation System Wiring Contractor Highlighted and Tabbed Book Package provides a prepared 2023 National Electrical Code Handbook for exam-room reference navigation along with Ugly's Electrical References and Simplified Irrigation Design for broader study.

Candidates can organize preparation around the six published examination categories: General Knowledge, Wiring and Protection, Wiring Methods and Materials, Equipment for General Use, Special Equipment, and Low Voltage.

The highlighted and tabbed NEC Handbook helps candidates develop a consistent approach to locating electrical requirements. The additional study books reinforce formulas, calculations, irrigation design, system components, and practical concepts that may support understanding of examination questions.

1 Exam Prep encourages candidates to move gradually from reference-assisted learning to timed examination practice. Since only the approved NEC reference may be used during testing, candidates should become comfortable solving calculations and recognizing irrigation concepts without depending on the other study books.

The goal is to strengthen electrical knowledge, improve NEC navigation, reinforce irrigation-system understanding, and provide a more organized preparation structure for the Iowa Irrigation System Wiring examination.

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?

PSI provides 120 minutes for the 50 scored questions and an additional 15 minutes for the non-scored questions.

What score is required to pass?

Candidates must answer at least 70% of the scored questions correctly.

Is the Iowa Irrigation System Wiring exam open book?

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

Can the highlighted and tabbed NEC Handbook be used during the exam?

Yes. PSI currently permits the 2023 NEC Handbook to be highlighted, underlined, indexed, and prepared with permanent tabs before testing.

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

No. Ugly's Electrical References is not permitted inside the current Iowa PSI examination center. It is included as a study and calculation resource.

Can Simplified Irrigation Design be taken into the exam?

No. Simplified Irrigation Design, 2nd Edition is not permitted inside the examination center. It is included for irrigation-system study and preparation.

What are the largest sections of the exam?

Wiring and Protection, Wiring Methods and Materials, and Equipment for General Use each account for 20% of the examination.

What Iowa license covers irrigation system wiring?

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

Is the examination the only way to qualify for the irrigation endorsement?

No. Current Iowa rules allow 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 Iowa approval before scheduling the exam?

Yes. Candidates using the examination pathway must complete the applicable Iowa Electrical Examining Board testing sponsorship process before scheduling through PSI.

Which NEC edition is used?

The current Iowa Irrigation System Wiring examination uses the 2023 National Electrical Code.

How long does the highlighted and tabbed package take to process?

Please allow up to 15 business days for tabbed and highlighted book package orders.

Why use the Iowa Irrigation System Wiring Highlighted and Tabbed Book Package?

The package combines an exam-room-approved highlighted and tabbed 2023 NEC Handbook with electrical calculation and irrigation-design study resources to support preparation across the complete Iowa Irrigation System Wiring examination outline.