Ampero vs Wire & Load

Ampero is the professional electrical calculator trusted by electricians, engineers, and contractors. Perform accurate, standards-compliant calculations instantly no more manual tables or guesswork. ▸ 11 CALCULATORS, ONE TOOLKIT FREE: • Cable Size — IEC 60364 cross-section sizing with ampacity validation • Voltage Drop — Verify actual drop for any cable run • Ohm's Law — Solve V, I, R, P from any two values • Lighting — Fixture count by lumen method (EN 12464-1) PRO: • Conduit Fill — NEC/IEC conduit sizing with fill ratio • Transformer Sizing — kVA selection, primary/secondary amps, Isc • Short Circuit — Fault current from transformer to fault point (IEC 60909) • Breaker Selector — Match MCB/MCCB to cable and load • Motor Starting — FLA, inrush current for DOL, Y-Δ, Soft Start, VFD • Grounding — PE conductor sizing with adiabatic method (IEC 60364-5-54) • Power Factor Correction — kVAr capacitor bank calculation ▸ STANDARDS YOU CAN RELY ON Every calculation references IEC 60364, IEC 60909, NEC Chapter 9, and EN 12464-1. Results include safety margins, coordination checks, and clear pass/fail indicators. ▸ PDF REPORTS WITH YOUR BRAND Generate professional PDF reports and share them with clients or inspectors. Pro users can add their company logo, name, address, and license number to every report. ▸ BUILT FOR THE FIELD • Dark interface designed for jobsite readability • Instant results — no internet required • Calculation history saved on device • English and Turkish language support ▸ AMPERO PRO Unlock all 7 premium calculators, PDF export with company branding, full IEC reference tables, ad-free experience, and unlimited calculation history. PLANS • Ampero Pro — Monthly: $4.99 / month, auto-renewing • Ampero Pro — Annual: $29.99 / year, auto-renewing (~$2.50/month) • Ampero Pro — Lifetime: $59.99, one-time purchase (not a subscription) SUBSCRIPTION TERMS Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the price disclosed at the time of purchase. You can manage and cancel subscriptions in your App Store account settings after purchase. PRIVACY POLICY https://ampero.zukasoft.com/privacy-policy.html TERMS OF USE (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Whether you're sizing a cable for a residential panel or selecting a transformer for an industrial facility, Ampero gives you the answer in seconds backed by international standards. Download now and calculate with confidence. Made by zukasoft. Got feedback? info@zukasoft.com

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.