Best Nec Code Book Apps

4.8(164 ratings)

FreeIn-App Purchases

Prepare for electrician certification exams with over 8,000 practice questions and detailed explanations. Access a comprehensive quick reference guide and 20 professional NEC calculators for on-the-job use. Track work hours with a built-in log for state board submissions.

Electrical Code-A-Day by PawEng, LLC

Quiz for Electricians

Strong Contender

📊 Productivity

4.8😊(9.2K ratings)

Free

Test your electrical knowledge daily with a new question based on the US electrical code. Perfect for apprentices, journeymen, and masters seeking to learn or refresh their understanding of electrical concepts and regulations.

What We Love

👍 Helpful for studying electrical content
🚀 Convenient app for refreshing knowledge
💡 Great tool for sharpening knowledge and testing
👍 Awesome for narrowing down NEC questions

Room to Improve

🐛 Lacks explanations for wrong answers
🐛 Some answers may be incorrect or unclear
🐛 Mediocre grammar and proofreading
🐛 Cannot toggle back and forth through questions

Mike Holt's Electrical Toolbox by Mike Holt Enterprises

Electrical Power Calculator

Worth Considering

Ugly's Electrical References

4.6😐(197 ratings)

Free

Mike Holt's Electrical Toolbox screenshot 1

Mike Holt's Electrical Toolbox screenshot 2

Mike Holt's Electrical Toolbox screenshot 3

Mike Holt's Electrical Toolbox screenshot 4

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.

What We Love

👍 Great app for electricians
💡 Provides code article references
👍 Useful for on-the-spot reference
👍 Excellent for verifying calculations
👍 Helpful for exam preparation
👍 Simplifies the trade
👍 Great jobsite resource
👍 Handy tool for electricians
👍 Teaches code in an advanced way
👍 Free app with needed features
👍 Helps size A/C circuits correctly
👍 American made

Room to Improve

🐛 Emailing results not working
🐛 Outdated information
🐛 Load calc a little clunky
🐛 Content setup needs overhaul
🐛 Video series lacks completion system
🐛 Bug with widescreen video exit
🐛 Not user-friendly
🐛 Outdated app needs refinement
🐛 Previous calculation data not erased
🐛 App is straight garbage (paid)

More Nec Code Book apps to explore

by Informed Publishing

$12.99

This app provides electricians and electrical professionals with up-to-date digital information based on the National Electrical Code. It includes formulas, wiring diagrams, conduit bending guides, and calculators for various electrical calculations. The app is designed for on-the-job reference and works offline.

NEC 2026 updatesMathematical formulas and calculatorsConduit bending guide with videos

📊 Productivity

(1.5K)

paid

MasterElec - NEC Code Guide

Electrical Voice Assistant

Voice-first interface for queries100% offline functionalityNEC reference access

A voice-powered assistant for electricians that provides offline access to NEC references and professional calculators. Quickly get answers to code questions and perform calculations without needing an internet connection.

Master Electrician Ref. Lite

(4)

freemium

A handbook for electricians

Motor and wiring informationAmpacity tablesConduit fill and grounding sizes

This electronic pocket reference guide provides essential information for electrical professionals. It offers calculations, code tables, and detailed sections on motors, ampacities, grounding, and more, all accessible on your mobile device.

NEC Answers for Electricians.

A NEC® 2017 Quick Reference

🔍 Reference

(0)

by Alan Cave

$1.99

This app provides quick access to commonly used information from the 2017 National Electrical Code (NEC). It's designed for electrical engineers and electricians needing on-the-go reference material for office or construction site use.

2017 NEC Edition contentQuick access to common informationDesigned for electrical professionals

🔍 Reference

(25)

paid

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.

NEC Electrician Exam Prep 2026

(746)

free

Journeyman Electrician Prep

Over 1,200 practice questionsTopic-specific focusVersatile testing modes

Prepare for your Journeyman Electrician certification exams with a comprehensive mobile study tool. Practice over 1,200 questions across various electrical topics, including definitions, calculations, and equipment. Boost your confidence and readiness for the official test.

free with in-app purchases

(60)

NEC Master Exam Prep

Effective NEC Study Tools

Extensive question bank (2,500+)In-depth explanations for answersProgress analytics and performance tracking

Prepare for your electrical code certification with a comprehensive study tool. Access over 2,500 practice questions with detailed explanations and track your progress. Create custom tests to focus on challenging topics and ensure you're studying the most current code standards.

Southwire® Voltage Drop Calc

(5)

subscription

QR Code Reader · STLab

Southwire Calculator

Determine wire size for voltage dropCalculate voltage drop for conductor runsLimit wire size by voltage drop

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

QR Code Scan, Read & Generator

(1.5K)

free

XQR Scan: QR Code Reader

Captain Code NEC Code Changes

(0)

Guide from 2023 - 2014

Searchable by market vertical, product, or article numberDirect NEC text extractionExpert analysis from IAEI

This app provides electrical professionals with up-to-date National Electrical Code information. It offers searchable access to code changes, expert analysis, and manufacturer insights, complete with illustrations to aid comprehension.

QR Code Scanner for iPhone

Instant QR code scanningCustom QR code generationBatch QR code creation

This app transforms your smartphone into a fast and reliable tool for scanning, creating, and managing QR codes. It efficiently handles daily use and professional batch creation, saving all results automatically for easy access.

🌟 Lifestyle

(2)

free with in-app purchases

QR Code Transfer

Scan & transfer it to your PC.

NEC License Exam Preparations

Master the NEC License Exam.

Prepare for electrical licensing exams with practice questions and mock tests covering the National Electric Code. Features include detailed explanations for correct answers and personalized result history.

Practice mode with answer explanationsReal exam style timed mock examsCustomizable quick mock exams