Wiremap

Wiremap is a clean, offline reference tool built for electricians, engineers, and DIY enthusiasts. No internet required after install. No ads. No permissions.
Wire Table Built-in ampacity reference for copper and aluminum conductors from 0.5 mm² to 300 mm². Includes maximum power capacity at 220V for quick on-site decisions.
Load Calculator Enter power (W), voltage (V), and power factor to instantly calculate operating current and get a recommended wire size with a 125% safety margin applied automatically.
Formula Reference Quick-access cards for Ohm's Law, single-phase and three-phase power formulas, wire resistance calculation, and voltage drop guidelines — all in one place.
Safety Tips Six essential electrician tips covering wire selection rules, temperature derating, copper vs aluminum differences, grounding requirements, breaker sizing, and color code standards (CN & IEC).