Wyoming Low Voltage Control Technician (ICC - 238_WY) - Online Exam Prep

The Wyoming Low Voltage Control Technician exam (ICC 238_WY) is built for technicians who install and service control systems under 90 volts—where correct circuit classification, proper wiring methods, and safe, code-compliant installation decisions matter every day in the field. This Online Exam Prep is designed to help you prepare for the way the exam is written: scenario-driven questions that require you to identify the code “target,” confirm the governing NEC requirement efficiently, and keep a steady pace in a timed, open-book environment.

Your prep is centered on the references you listed:

• National Electrical Code (NEC), 2023
• Ugly’s Electrical References

Control work can include everything from basic low-voltage control circuits to more technical installations involving instrumentation-style cabling, optical fiber routing concepts, and programmed power distribution systems. On the exam, those topics show up as questions that test whether you can:

• Recognize which circuit class applies (Class 1, Class 2, or Class 3)
• Identify when special wiring or protection rules apply
• Apply NEC requirements to real installation conditions instead of guessing
• Navigate your references quickly enough to stay ahead of the clock

This course helps you build those skills through organized study guidance and practice-oriented preparation, so you’re training the same way you’ll test.

What You Get

• Exam-aligned study structure: A practical plan that tracks the published 238_WY content areas, so your time is focused on what the exam emphasizes.
• Open-book navigation training: Guidance that helps you build repeatable “find paths” inside NEC 2023 so you can confirm answers quickly.
• Scenario-first practice approach: Preparation that reinforces how ICC-style questions are written—read the situation, identify the code topic, confirm the requirement, answer, move on.
• Control-circuit confidence building: Support for the areas that commonly slow candidates down, including circuit classification, wiring methods, and control-system installation scenarios.
• Realistic pacing habits: A test-ready method for avoiding time traps and staying consistent across all questions.

Exam Details

• Exam: 238 Wyoming Low-voltage Control Technician (ICC 238_WY)
• Number of Questions: 30 multiple-choice questions
• Time Limit: 1 hour 30 minutes
• Book Status: Open book
• Testing Provider: Pearson VUE (ICC Contractor/Trades program)
• Exam Fee (Pearson VUE): $115

The published content outline for 238_WY breaks the exam into the following areas:

• General Low-voltage Control: 10%
• Circuits and Equipment Operating at Less than 50 Volts and Storage Batteries: 10%
• Class 1, Class 2, and Class 3 Circuits: 30%
• Fire Alarm System Controls Circuit: 10%
• Instrumentation Tray Cable, Optical Fiber Cables, Closed Loop, and Programmed Power Distribution: 30%
• Communication System Control Wiring: 10%

This Online Exam Prep is structured to keep your study time aligned with those weightings so you spend more time on the highest-impact topics.

Open Book Test

The 238_WY exam is an open book examination, but open-book only helps if you’re comfortable using your references quickly. With 30 questions in 90 minutes, you typically have only a few minutes per question—and some items require more than a quick lookup.

The most reliable open-book approach for this exam is a simple, repeatable process:

• Identify the topic fast: circuit class, wiring method, control circuit rules, or a specialized cabling scenario.
• Confirm the exact requirement: use NEC 2023 to verify the governing rule instead of relying on memory or habit.
• Answer and keep moving: maintain pace so one difficult question doesn’t steal time from easier points.

The ICC Contractor/Trades bulletin also explains that exam questions are four-option multiple-choice, there is no guessing penalty, and results for computer-based exams are available immediately after completion. That means your best strategy is to answer every question, using your references efficiently for the ones that require verification.

Licensing Steps

Wyoming’s ICC Contractor/Trades bulletin explains that before scheduling your examination, you must first make a license application with the Wyoming Department of Fire Prevention and Electrical Safety (Electrical Licensing). If your application is satisfactory, ICC is notified of your eligibility to test. Once you receive notice of approval, you may apply for and schedule your examination.

A practical step-by-step path typically looks like this:

1. Choose the correct low-voltage category for your intended scope (control systems under 90 volts).
2. Gather acceptable work verification (Wyoming lists notarized letters or an approved employment verification form as acceptable documentation methods).
3. Submit your application through the Wyoming electrical licensing process.
4. Receive eligibility approval so ICC/Pearson VUE can process your exam authorization.
5. Schedule and take the ICC 238_WY exam through Pearson VUE.
6. After passing, complete the remaining state steps through the eLicense portal process.

This Online Exam Prep focuses on the exam step by training the skills the exam measures most: scenario interpretation and efficient code confirmation.

State Requirements

Wyoming’s electrical licensing information defines a Low Voltage Technician as a person licensed by the Department who has experience in the portion of the electrical wiring industry covered by the low-voltage license and the technical knowledge to install and supervise the installation of electrical equipment associated with the license held, in accordance with the National Electrical Code and applicable ordinances and regulations.

For control systems, Wyoming lists the low-voltage category:

• LV-X: Low voltage work for control systems under 90 volts (1,000 hours)

Wyoming also states that any technician performing low voltage work in the State of Wyoming shall be employed at all times by a Low Voltage/Limited Contractor who carries a current Wyoming Low Voltage/Limited Contractor’s license.

For code basis, Wyoming states that the 2023 edition of the National Electrical Code is in effect. That’s why this prep is anchored to NEC 2023 and emphasizes code-based confirmation over memorization.

Reference Books

• National Electrical Code, NEC, 2023
  Your primary exam reference for control-system installations, circuit classification rules, and code-required wiring and protection practices.
• Ugly’s Electrical References
  A compact electrical reference used for quick fundamentals and supporting electrical relationships that help you move through theory and basic calculation-style questions efficiently.
• Ferm’s Fast Finder Index
  An allowed indexing reference used by many candidates to navigate the NEC more efficiently during open-book exams.
• National Electrical Code Handbook
  An allowed reference during the exam (hardcover). It contains explanatory material in addition to the NEC provisions, but exam questions are based on the code provisions.
• Tom Henry’s Key Word Index
  An allowed indexing tool that can support faster lookups when you need to locate a topic quickly.

Test Information and Study Materials

The fastest improvements on 238_WY usually come from studying in the same way you’ll test: read the question, identify the code target, confirm the rule in NEC 2023, then answer. This is a control-focused exam, so you’ll see questions where small details change the correct requirement—voltage level, circuit class, cable type, installation location, or the type of control system involved.

Here’s how to turn the published content outline into practical study sessions:

• Class 1, Class 2, and Class 3 Circuits (30%)
  This is one of the highest-weight sections, and it’s also where many candidates lose time. Your goal is to become fast at recognizing circuit class clues in the question and confirming the correct NEC requirement for that class. Practice is key: classification becomes much easier when you repeatedly work problems that force you to decide which rules apply.
• Instrumentation Tray Cable, Optical Fiber Cables, Closed Loop, and Programmed Power Distribution (30%)
  This portion can feel technical because it includes specialized cabling and system types. The best approach is to practice scenario recognition: identify what the question is describing, then go straight to the NEC area that governs it. Build confidence by learning the “keyword triggers” that point you toward the correct code neighborhood.
• General Low-voltage Control (10%)
  Treat this as a score and speed opportunity. These questions often depend on interpreting the scenario correctly and confirming a straightforward rule. The goal is to answer confidently without over-reading.
• Circuits and Equipment Operating at Less than 50 Volts and Storage Batteries (10%)
  These questions often test whether you can connect a low-voltage equipment scenario to the right code requirement. Practice reading carefully, identifying what is being protected or controlled, and confirming the rule efficiently.
• Fire Alarm System Controls Circuit (10%)
  This area can blend control-circuit thinking with fire alarm control concepts. Focus on identifying what the question is actually testing—control wiring, circuit type, separation requirements, or protection/grounding expectations—then confirm the applicable NEC requirement.
• Communication System Control Wiring (10%)
  Control wiring that overlaps with communications-style rules can be confusing if you treat everything as “just low voltage.” Practice identifying the system type and confirming the correct NEC requirements for the scenario described.

Open-book drill that builds real speed: Each time you miss a practice question, write down the NEC location that supports the correct answer. Later, find that same location again without notes. This repetition builds navigation confidence—and navigation is one of the biggest advantages you can develop for a timed open-book exam.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports your Wyoming Low Voltage Control Technician goal by keeping your preparation organized, practical, and aligned with how the 238_WY exam is built.

• Organized study guidance: A clear structure based on the published content areas helps you prioritize the topics that drive the most questions.
• Trade-focused review: Control-system work is scenario-driven in the field and on the exam. Prep stays centered on applying NEC rules to real installations.
• Practice-oriented preparation: Timed, open-book exams reward candidates who practice confirming answers in the code. A practice-first approach builds speed and accuracy together.
• Reference navigation support: Learning repeatable ways to locate NEC requirements reduces wasted time and helps you keep a steady pace across the entire exam.
• Confidence-building study structure: Consistent practice, code-confirmed corrections, and outline-driven study habits help you walk into exam day prepared to stay calm and keep moving.

FAQ

Which exam is this online exam prep for?

This Online Exam Prep is for the Wyoming Low-voltage Control Technician exam, ICC 238_WY.

Is the 238_WY exam open book?

Yes. The 238_WY exam is listed as an open book examination.

How many questions are on the 238_WY exam and what is the time limit?

The exam listing shows 30 multiple-choice questions with a 1 hour 30 minute time limit.

What topics are covered on the Wyoming 238_WY exam?

The published outline includes general low-voltage control, circuits and equipment operating at less than 50 volts and storage batteries, Class 1/2/3 circuits, fire alarm system controls circuit topics, instrumentation tray cable/optical fiber/closed loop/programmed power distribution, and communication system control wiring.

What references are used for the 238_WY exam?

The exam’s allowed references include NEC 2023, Ugly’s Electrical References, and additional indexing/reference tools that may be used during the exam (including Ferm’s Fast Finder Index, the NEC Handbook, and Tom Henry’s Key Word Index).

What Wyoming low-voltage category matches control systems work?

Wyoming lists LV-X as low voltage work for control systems under 90 volts with a listed requirement of 1,000 hours.

Do I need to apply with Wyoming before scheduling the exam?

Yes. Wyoming’s ICC Contractor/Trades process requires a license application and eligibility approval before you can schedule the ICC exam through Pearson VUE.

Why does open-book prep still require practice?

Because the exam is timed. Open book helps only when you can navigate the NEC efficiently, confirm requirements quickly, and maintain a steady pace across all questions.

Do I have to be employed by a contractor to perform low-voltage work in Wyoming?

Wyoming states that any technician performing low voltage work in the state must be employed at all times by a low voltage/limited contractor who carries a current Wyoming low voltage/limited contractor’s license.