# Master Electrician Guide

> Master Electrician Guide (iPhone/iPad app by JACOB LAWRENCE WYERS.)

- Source: https://appshunter.io/ios/app/master-electrician-guide/id6782430546 (this page in markdown: same URL + `.md`)
- Developer: [JACOB LAWRENCE WYERS](https://appshunter.io/developer/1895767739)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-06-28
- Data updated: 2026-07-03
- User reviews in markdown: https://appshunter.io/ios/app/master-electrician-guide/id6782430546/reviews.md

## What is Master Electrician Guide?

Master Electrician Guide is the all-in-one toolkit for solo electricians and small operators - fast, focused, and built to work in the field (offline, except the AI assistant).

CALCULATORS (NEC 2023, all offline)
• Ohm's Law / power wheel
• Voltage drop (% + minimum wire size)
• Wire size with ambient + bundling derating and 110.14(C) terminal limits
• Conduit fill (Chapter 9) and box fill (314.16)
• Conduit bending offsets and shrink
• Motor FLC, conductor and OCPD (Article 430)
• OCPD sizing, transformer sizing, and dwelling load (Article 220)
• Three-phase power (kVA/kW/amps), available fault current / AIC,
  series-parallel resistance, and an AWG / mm2 / kcmil converter

CODE REFERENCE
• Table 310.16 ampacities (copper & aluminum)
• Conductor properties, conduit areas, grounding (250.66 / 250.122)
• Wire color codes, NEMA configurations, residential circuits
• Lug torque (110.14), burial depth (Table 300.5), and raceway/cable support
• Choose your NEC edition (2017/2020/2023) — checklists & the AI adapt to it

PER-STATE RULES
• Adopted NEC edition, licensing authority, and license tiers for all 50 states + DC
• The apprentice to journeyman to master career path

FIELD DOCUMENTATION
• Log jobs with client info and status
• Attach before / during / after photos from your camera
• Build professional line-item estimates AND invoices, exported as branded
  on-device PDFs with your company info
• Back up and restore everything (jobs, photos, estimates, checklists) to a file
• Run inspection-ready compliance checklists (service, rough-in, final,
  grounding & bonding, GFCI/AFCI, safety/LOTO, panel) with NEC references

TROUBLESHOOTING & LEARNING
• Diagnose 14 common field problems with ranked causes and safe steps
• Plain-English lessons on the fundamentals, safety, and the business
• Exam prep: 60 journeyman/master practice questions with explanations + NEC refs

AI CODE ASSISTANT
• Ask anything electrical and get code-aware answers that cite NEC sections
• Snap a photo of a panel or device and get an AI diagnosis
• Answers are aware of your selected state and NEC edition

Master Electrician Guide is a field aid for qualified, licensed individuals. It
is not a substitute for the adopted code, local amendments, or a licensed
design. Always verify against your AHJ and adopted NEC edition, and follow
NFPA 70E safety practices.


## Version history (last 1 release)

### 1.0 — 2026-06-28

No release notes.

## More apps by JACOB LAWRENCE WYERS

- [MyAIDictation - AI Keyboard](https://appshunter.io/ios/app/myaidictation-ai-keyboard/id6764409216)

All apps by JACOB LAWRENCE WYERS: https://appshunter.io/developer/1895767739

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-03.*