Ugly’s Electrical References Free Exam

(Electrical) Test your knowledge of key concepts and industry standards

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Are You Ready to Pass Your Electrical License Exam? Stop Worrying and Start Preparing

As a future licensed electrician, you know the NEC exam at PSI is a major milestone. But here’s what many candidates don’t realize – having the book isn’t enough. Success comes from knowing how to use it effectively under pressure.

Why Traditional Study Methods Fall Short: Most test-takers spend countless hours memorizing codes, only to freeze when faced with the actual exam format. They have the knowledge but lack the crucial exam navigation skills that make the difference between passing and failing.

Our Free NEC Practice Exam System Is Different: Unlike static study guides or expensive prep courses, our system replicates the exact PSI testing environment. With 75 authentic-style questions drawn from across the NEC, you’ll practice under the same time constraints you’ll face on exam day – 15 questions in 30 minutes.

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  • Master Open-Book Strategy: Learn to quickly locate relevant code sections just like successful candidates from Texas to California do
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  • Adaptive Learning: Each practice test pulls different questions, keeping you sharp across all NEC topics
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From our experience helping electricians across the country prepare, we’ve seen how this focused practice approach consistently leads to passing scores. Just like John in Florida who went from struggling with time management to passing on his first attempt.

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Take your first practice exam today – it’s free, and you can retake it as many times as you need. Because when it comes to your electrical license, proper preparation isn’t just helpful – it’s essential.

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Ugly's Electrical References

Ready to Test Your Electrical Knowledge? Start Your Free NEC Practice Exam

Before You Begin: This practice exam simulates the official PSI testing environment to help you build confidence and speed. You'll have 30 minutes to complete 15 questions, drawn randomly from our bank of 75 expert-crafted questions based on Ugly's Electrical References.

Exam Features:

15 randomly selected questions

30-minute time limit

Unlimited free attempts

Different questions each time

Bookmark feature for difficult questions

Pro Tip: Just like on the actual exam, you can flag challenging questions and return to them later. This time-tested strategy helps successful candidates maximize their scores.

Ready to start improving your test-taking skills? Click "Start" below to begin your practice exam.

Note: This is a free practice resource. Take as many attempts as you need to build confidence with the material.

Please enter your following information to get started:

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

Impedance is expressed in _________.

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How many trigonometry functions are there?

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

Using the voltage drop formula, what is the voltage drop of a 240 volt single phase circuit consisting of #8 THWN copper conductors feeding a 30 ampere load that is 150 feet in length?

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In order to find the amperes in a direct current when "kW" is known, the formula is _________.

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Using the formula, Hours= Lamp cost x 1000 + Watts saved x kWhr, if a 75 watt incandescent lamp i sreplaced with a 26 watt energy saving lamp, having the same light output (lumens), the cost per kilowatt hour (kWhr) is 12 cents, and the lamp cost is $3, how many hours would the new lamp need to operate to pay for itself?

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In a parallel circuit, the total resistance is always _______  than the resistance of any branch.

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The right arm extended straight out exhibits the hand signal for which of the following actions?

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

Determine the correct wire size for a 480-volt, 3-phase circuit consisting of THWN copper conductors that supply a 125-amp load that is 300 feet from the source and has a maximum 3% voltage drop

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Which of the following is a three phase connection?

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

Which of the formulas for locked-rotor current below is for a three-phase motor?

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

What is the restricted approach boundary a nominal phase to phase system voltage of 42 kV?

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

What is the kVA of capacitors required to correct the power factor to 85% when there is a load of 250 kW at 65% power factor.

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

The field term for "Explosion Proof Seal Off'' is ________ .

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bookmark empty Free Ugly's Electrical Reference Exam | NEC Practice

What is the current for a single phase when a circuit has a 1500 watt load, a power factor of 86%, and operates from a single-phase 230 volt source?

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receptacle outlet shall be provided for every additional ________  of the countertop or work surface. At least one receptacle shall be located within ____________ of outer end of the work surface.

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The average score is 36%

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What is Ugly’s Electrical References?

Last Updated: December 21, 2024
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“Ugly’s Electrical References” is a compact and widely used reference guide for electricians, electrical engineers, and other professionals in the electrical industry. It provides essential information and quick access to key electrical data, including:

  • Electrical formulas
  • National Electrical Code (NEC) tables and references
  • Conductor sizes and ampacities
  • Conduit bending angles
  • Voltage drops
  • Electrical symbols and diagrams
  • Safety guidelines and practices

The guide is named “Ugly’s” after its creator, George “Ugly” McGrath, who first published it in the 1970s. Over the years, it has become a go-to manual for many in the field because of its practicality and ease of use. The information is presented in a straightforward manner, making it an excellent tool for on-the-job use.

Why should I know Ugly’s Electrical References?

Uglys Electrical References

Are there ICC Tests that have questions from Ugly’s Electrical References?

Yes, there are ICC (International Code Council) tests that may include questions for which knowledge of Ugly’s Electrical References would be beneficial. The ICC offers a variety of certification exams for professionals in the building and construction industries, including several for electricians and related trades. While the ICC exams themselves do not specifically cite “Ugly’s Electrical References” as a required reference, many of the topics covered in Ugly’s, such as electrical formulas, the National Electrical Code (NEC), wiring standards, and safety practices, are relevant to these exams.

Some ICC exams where Ugly’s Electrical References might be particularly useful include:

  1. Electrical Inspector (E1 Residential, E2 Commercial): These exams test the candidate’s knowledge of the NEC and electrical systems in residential and commercial settings. Ugly’s Electrical References provides a comprehensive overview of many NEC codes and electrical standards, making it a helpful study aid.

  2. Electrical Plans Examiner (E3): This exam focuses on reviewing electrical plans for code compliance. Ugly’s can assist in understanding complex electrical standards and calculations that might be tested.

  3. Residential Combination Inspector (B1, E1, P1, M1): This certification covers multiple trades, including electrical. Knowledge of electrical references from Ugly’s can be beneficial for the electrical portion of the exam.

  4. Commercial Combination Inspector (B2, E2, P2, M2): Similar to the Residential Combination Inspector, this certification includes electrical systems, and Ugly’s provides valuable references for NEC and electrical concepts.

  5. Permit Technician: While this exam is more general, it still requires knowledge of building codes, including the NEC for electrical permitting. Ugly’s can help provide a better understanding of electrical requirements that might appear on the test.

While Ugly’s Electrical References is not an official reference for ICC exams, its content aligns closely with many topics covered in these tests. Preparing for ICC exams with Ugly’s can help reinforce your understanding of electrical codes, safety standards, and calculations, which are often crucial for successful certification.

What are some Electrical Codes I would learn from Ugly’s Electrical References?

Ugly’s Electrical References provides a wealth of information on various electrical codes and standards that are essential for electricians, electrical engineers, and other professionals in the electrical industry. Here are some of the key electrical codes and topics you would learn from Ugly’s Electrical References:

1. National Electrical Code (NEC) Basics

  • General Requirements: Understanding the fundamental principles outlined in the NEC, such as the purpose, scope, and application of the code.
  • Definitions: Common electrical terms and definitions used throughout the NEC to ensure a clear understanding of code requirements.

2. Wiring Methods and Materials

  • Conductor Types and Sizes: Information on different types of conductors (copper, aluminum, etc.), insulation types, and sizing based on NEC tables.
  • Ampacity of Conductors: Tables and guidelines for determining the maximum current-carrying capacity of conductors, including adjustments for temperature and conduit fill.
  • Wiring Methods: Standards for installing various wiring methods such as non-metallic sheathed cable (NM), armored cable (AC), conduit systems, and others.

3. Conduit Fill and Bending

  • Conduit Fill Capacity: NEC tables and calculations to determine the number of conductors that can safely be installed in different types and sizes of conduit.
  • Bending Radius and Techniques: Guidelines for bending conduits without damaging the conductors inside, ensuring compliance with NEC bend radius requirements.

4. Grounding and Bonding

  • Grounding Requirements: NEC rules for proper grounding of electrical systems and equipment to prevent electric shock and equipment damage.
  • Bonding Requirements: Information on bonding conductive materials to create a continuous electrical path, preventing voltage potential differences.

5. Overcurrent Protection

  • Circuit Breakers and Fuses: NEC requirements for selecting and installing overcurrent protection devices based on circuit characteristics and equipment protection needs.
  • Short Circuit and Ground Fault Protection: Standards for protecting circuits and equipment from short circuits and ground faults to enhance safety.

6. Voltage Drop Calculations

  • Voltage Drop: Guidelines and formulas for calculating voltage drop in electrical circuits, ensuring that electrical equipment operates efficiently and safely.

7. Electrical Load Calculations

  • Residential, Commercial, and Industrial Load Calculations: NEC methods for calculating electrical loads in different types of occupancies to ensure circuits and equipment are adequately sized.
  • Service and Feeder Sizing: Determining the correct size for service entrance conductors and feeders based on calculated loads.

8. Panelboards and Distribution Equipment

  • Panelboard Requirements: NEC rules for the installation, spacing, and accessibility of panelboards and distribution equipment.
  • Clearance and Accessibility: Standards for maintaining safe working spaces around electrical equipment to prevent accidents and ensure compliance.

9. Special Occupancies and Equipment

  • Hazardous Locations: NEC classifications and installation requirements for electrical equipment in hazardous (classified) locations.
  • Swimming Pools, Spas, and Hot Tubs: Special requirements for electrical installations in areas where water is present to prevent electric shock hazards.

10. Electrical Safety and Best Practices

  • Personal Protective Equipment (PPE): Guidelines for selecting and using PPE when working with or near electrical equipment.
  • Lockout/Tagout Procedures: Standards for safely de-energizing equipment before maintenance to prevent accidental energization.

By studying Ugly’s Electrical References, you gain a practical understanding of these codes and standards, helping ensure compliance, safety, and efficiency in electrical work. The guide serves as a quick reference for field use, providing electricians and professionals with the information needed to adhere to the National Electrical Code and other industry standards.

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