Master Electrician Guide

Code calculators, NEC tables, per-state rules, job photos, estimates, compliance checklists, troubleshooting, and an AI code assistant — built for working electricians.

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.