Electrical Calculator ElecCalc vs Wire & Load

Solve electrical calculations faster on site or in the office. ElecCalc gives engineers, electricians, technicians, and students 15 focused tools for wire sizing, voltage drop, breakers, transformers, grounding, motors, power factor, and more. WHY ELECCALC • Electrical calculator toolkit built for field and office work • Wire size, voltage drop, cable ampacity, breaker, transformer, and grounding tools • IEC-based assumptions shown clearly with risk-sensitive results • Calculation history, favorites, and formula reference for repeated work • Clean interface designed for fast checks, not bloated spreadsheets CALCULATORS INCLUDED • Ohm's Law for voltage, current, resistance, and power • Power calculator for active, reactive, apparent power, and power factor • Cable section and voltage drop calculations • Cable ampacity based on IEC 60364-5-52 installation methods • Breaker and fuse selection with overload protection checks • Transformer loading, losses, efficiency, and short-circuit current • Motor current, starting current, torque, and IEC 60034-30-1 efficiency • Grounding, compensation, lighting, energy consumption, unit conversion, and formulas Use ElecCalc when you need a quick engineering estimate, a repeatable calculation flow, or a compact reference while working away from your desk. Support: https://saevaexe.github.io/eleccalc/support.html Privacy Policy: https://saevaexe.github.io/eleccalc/privacy-policy.html Terms of Use: https://saevaexe.github.io/eleccalc/terms.html

Stop guessing the right wire size. Wire & Load is the no-internet-needed reference every electrician and maintenance tech wants in their pocket. GET AN INSTANT RECOMMENDATION for AWG / mm² wire size, voltage drop percentage, and the matching standard circuit breaker — driven by NEC 2023 / 75°C ampacity tables and the 240.6(A) breaker series. WHAT'S INSIDE • Voltage-drop calculator — single- and three-phase, copper or aluminum • Configurable voltage-drop limit (0.5% – 10%) • NEC 240.4(B) next-size-up breaker rule applied automatically • 60°C limits for 14/12/10 AWG copper and 12/10 AWG aluminum pre-applied per NEC 240.4(D) • Continuous-load (≥ 3 hr) 1.25× multiplier toggle • Power-mode input — enter watts and power factor, the app derives the working current OFFLINE REFERENCE TABLES • AWG ↔ mm² ↔ diameter (ASTM B258) • Copper and aluminum ampacity (NEC 310.16, 75°C) • Standard breaker sizes (NEC 240.6(A)) • Motor starting inrush multipliers — DOL, star-delta, soft starter, VFD (NEMA MG-1) DESIGNED FOR THE FIELD • Works on any job site, no signal needed • Search built into every reference table • Both AWG and mm² always shown on results • Switch between metric (mm² / m) and imperial (AWG / ft) • Localized in English, Spanish, Japanese, French, German, and Portuguese PRIVACY FIRST No accounts. No analytics. No ads. No tracking. Your inputs never leave your device. PRICING Try Wire & Load free for 7 days. After that, unlock lifetime access for a single $1.99 purchase — no subscription, no recurring charges, free updates. DISCLAIMER This app provides general reference information based on commonly-used electrical engineering tables and formulas. Results are estimates and do not constitute professional engineering advice. Always follow the electrical code applicable in your jurisdiction and consult a licensed electrician or engineer.