Electrician Handbook: Wiring

Electrical calculations, wiring reference & electrician tools

Every electrician needs a reliable reference on the job. Electrician Handbook: Wiring brings together professional calculations, wiring guides, and electrical references in one offline-ready app for journeymen, master electricians, and electrical engineers.

⚡ Professional calculations on the job site
Run accurate field calculations without internet access. Wire size, voltage drop, conduit fill, box fill, motor full-load current, transformer sizing, and more — all following code standards so you can cite results to an AHJ.

📋 Wiring reference for licensed pros
Access wiring diagrams, ampacity tables, conduit sizing charts, and electrical equipment data instantly. Find electrician specs for a service upgrade or verify circuit wiring for a new installation — the reference library is built for field use with high contrast and sunlight-readable text.

🔧 Field tools that work offline
Bookmark calculations and reference tables you use every day. Add field notes to each saved result. Export results as a PDF stamped with the relevant code section — ready to hand to an inspector. All tools work fully offline.

📚 NEC electrical code reference — 2023 and 2026
Built around NEC 2023 and updated for the 2026 adoption cycle. Look up articles, cross-reference sections, and track changes between editions. Unlike paywalled subscriptions, this is a one-time purchase.

🎓 Journeyman electrician exam preparation
Studying for the journeyman exam or master electrician test? Practice section covers NEC-based questions, electrical calculations, and wiring theory between jobs.

✅ What's included
• Wire sizing calculator — AWG and metric, ampacity tables
• Conduit fill calculator and offset bending reference
• Voltage drop calculator — single and three phase
• Box fill calculation (NEC 314)
• Motor full-load amps table (NEC 430)
• Copper and aluminum conductor ampacity tables
• Electrical references book and quick charts
• Wiring diagrams and installation guides
• Advanced panel load calculation
• Works fully offline — no subscription required

From apprentice to master, this is the handbook wiring professionals keep on their phone.