Cooperin Guide

Cooperin Guide

+ Electrician, the Perfect Pair

Every calculation. Every code. Every job. Your copilot for the field.

$5.99 — Buy Once, Own Forever
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AI Photo Analysis

Snap a photo of any nameplate, panel, or equipment. Coop AI reads it and gives you NEC-compliant sizing and protection specs instantly.

12 NEC Calculators

Voltage drop, wire sizing, conduit fill, box fill, breaker sizing, Ohm's law, motor FLA, transformer KVA, short circuit, and more.

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Complete NEC 2023 Reference

Full ampacity tables, wire color codes, GFCI/AFCI requirements, EGC sizing, and quick formulas — all offline, always available.

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Self-Verifying AI

Coop AI cross-checks every answer against embedded NEC reference data. It cites specific code sections and shows its work step by step.

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Field Tools

Visual conduit bender with takeup charts, unit converter for AWG/mm²/conduit sizes, and in-app web search for anything else.

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Job Memory

Save calculations to named jobs. Review past work, track materials, and keep a field log — all stored locally on your device.

All 12 Calculators

NEC 2023 compliant — verified against official code tables

🔌Voltage Drop
Wire Size & Ampacity
🔧Conduit Fill
📌Box Fill
🌡Ohm's Law
📈Breaker Sizing
Motor FLA
💡Transformer KVA
Short Circuit
🏡Residential Load
🔢Power Factor
💰Derating