Best Nec 725 Class 1 2 3 Circuits Apps

Conductor sizingVoltage drop limitationsCircuit protection sizing

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

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Fault Current Calculator

by Cooper Bussmann, LLC

Calculate available fault currentSize fuses and conductorsGenerate service equipment labels

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

Circuitry - 3D Circuit Builder

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freemium

Engineering made simple

3D circuit buildingGPU-accelerated analysisIntuitive 3D interface

Build and simulate electronic circuits in an intuitive 3D environment. This app offers lightning-fast analysis and a user-friendly interface, making complex engineering accessible. Circuits are saved as documents for easy sharing and management across devices.

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NEC Electrician Test Prep 2026

Electrician Exam Practice

Up-to-date NEC questionsDetailed explanationsCovers all major courses

Prepare for your electrician license exam with up-to-date questions and detailed explanations. Covers all major topics, offers various test modes, and tracks your progress to help you pass on the first try.

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Electronics Circuit Calculator

Arduino Experiments Guide

Over 55 circuit calculations and conversionsLogic Gate calculationsResistor and inductor value determination

$2.99 | 100% OFF

This app offers over 55 electronic circuit calculations, conversions, and experiments. It simplifies complex circuit problems for engineers, students, and hobbyists, providing instant variable value calculations and precise component analysis.

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Southwire® Conduit Fill Calc

by Southwire Company

Conduit size calculationNEC fill percentagesJam probability

This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.

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Electrician Test Prep 2026

NEC Electrician Exam Practice

1,200+ practice questionsDetailed answer explanationsMultiple test modes

Prepare for your Journeyman Electrician certification exam with over 1,200 practice questions and detailed explanations. Utilize multiple test modes and a performance analysis system to study efficiently and increase your chances of passing on the first attempt.

Wire Size, NEC & IEC Tools

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subscription

Voltage Drop Calculator.

NEC and IEC dual standardsVoltage drop and wire sizing calculationsSupport for continuous load and corrections

Calculate voltage drop and wire size using both NEC and IEC standards. Supports various load types, conductor materials, and system configurations. Generates detailed reports for electricians, engineers, and contractors.

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NEC Tools for Electricians

NEC Box & Conduit Calc

Box fill calculationsConduit fill calculationsWire volume data

Calculate electrical box and conduit fill accurately according to the NEC. This app provides instant, reliable calculations for electricians, contractors, and students, saving time on job sites. It offers support for various box and conduit types, conductor sizes, and includes wire volume data.

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3 phase delta and wye circuit calculationsConductor ampacity lookup (NEC/CEC)Voltage drop calculation

Electrician's Helper

by Sam Virgillo

$12.99

This app simplifies electrical work by providing quick access to electrical codes and performing complex calculations for installations. It helps electricians find conductor ampacity, calculate voltage drop, determine box fill, and size raceways, among many other essential functions.

Load calcs, NEC help, and more

Load calculator with NEC standardsSingle line diagram toolPanel schedule creation

Streamline electrical design and permitting with powerful tools for load calculations, panel schedules, and single-line diagrams. Quickly reference the National Electrical Code with an AI-powered chatbot and generate instant PDF reports for inspectors and clients.

Electronics Engineer Helper

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ad-supported

Calculators and references

Datasheet searchResistor color code calculatorElectronic schematic symbols

This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.

📊 Productivity

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AWG Calculator: Wire Size

NEC, Conduit, Voltage Drop

Wire size (AWG) calculationsVoltage drop calculationCircuit breaker sizing

This professional tool provides electricians with accurate, code-based electrical calculations for wire sizing, voltage drop, circuit breakers, and more. It includes NEC® code references and specialized calculations for various systems. Save time and ensure accuracy in the field or during planning.

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3D virtual workbenchReal-time circuit simulation150+ physically simulated parts

iCircuit 3D

3D Electronics Workbench

$12.99

Design, build, and test electronic circuits in a realistic 3D environment. This app offers a virtual workbench with over 150 simulated parts and tools to experiment with circuits, diagnose issues, and visualize component behavior.

Electrician NEC Calculator

NEC compliant calculationsWire and conduit sizingVoltage drop calculations

$29.99 | 100% OFF

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

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NEC Electrical Exam Prep 2025

Ace the NEC Journeyman Today

Random quizzesPractice by topicFull-length mock tests

Prepare for the NEC Electrical Exam 2025 with interactive quizzes, mock tests, and detailed analysis. Master the National Electrical Code with expert explanations and track your progress. Study offline anytime, anywhere.

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