Voltage Drop Calculator. vs CircKit

Perform accurate Voltage Drop and Wire Sizing calculations for both NEC® (National Electrical Code) and IEC standards. Built for electricians, engineers, and contractors who need reliable results on the go. Voltage Drop Calculator • Dual standards: Switch between NEC (AWG/Imperial) and IEC (mm²/Metric) • Enter voltage, current, run length, and power factor • Supports continuous load (125%), grouping, and ambient temperature corrections • Copper or Aluminum conductors for single-phase and three-phase systems • Detailed results including ampacity, derating, voltage drop, and load voltage • Automatic compliance checks (e.g., ≤ 3% for branch circuits) Wire Size Calculator (Reverse) • Calculates required wire size for a target voltage drop % • Suggests optimal AWG, kcmil, or mm² • Uses NEC Chapter 9, Table 9 (AC impedance) with DC fallback Professional Tools • Wire converter (AWG/kcmil ↔ mm²) • Generate and share PDF reports • Handy electrical formula cards • Localized in English, Spanish, French, German, Italian, Dutch, Portuguese, and Chinese

The essential electrical app for professionals. From motor sizing to voltage drop calculations, get instant results with tools designed for electricians, contractors, and engineers. Solve complex electrical problems quickly and stay compliant with the Canadian Electrical Code. AI-POWERED ASSISTANCE • Ask Sparky, your new AI electrical assistant, for help with electrical questions • Access Sparky through Siri on Apple Intelligence-compatible devices • Get quick answers even when you're outside the app ADVANCED CALCULATIONS • Motor sizing and protection calculators • Transformer sizing with protection specifications • Voltage drop calculations with wire derating • Conduit and box fill calculators • Arc flash incident energy calculator • PVC conduit expansion calculator • Redesigned and simplified Ohm's Law calculator • Installation assistant for project guidance • Recessed-light spacing for optimal layouts PROFESSIONAL REFERENCE LIBRARY • Expanded Canadian Electrical Code reference library with 75 new code entries • Wire and conduit trade-size tables with drill sizes and metric equivalents • NEMA plug and receptacle configurations and enclosure ratings • Data pinout references and phase colour codes • Bonding sizes, burial depths, and strap spacing • Torque specifications and wire reel estimator BUILT-IN PRODUCTIVITY TOOLS • Integrated notes accessible anywhere in the app • Completely rebuilt fraction calculator with a new tutorial • Unit converter spanning 14 categories • Code of the Day with optional daily notifications • Find tools from your Home Screen or Lock Screen with Spotlight • Share results without first saving them as notes • Navigate to jobs using Apple Maps, Google Maps, or Waze DESIGNED FOR PROFESSIONALS Enjoy a clean, intuitive interface that now supports landscape mode and resizable windows. Sparky's CircKit delivers organized tools electrical professionals can rely on for accurate, code-compliant results. Whether you're running conduit, sizing equipment, or planning an installation, Sparky's CircKit provides the calculations and reference data you need to work efficiently and safely. FREE TRIAL, THEN YOUR CHOICE Start with a 14-day free trial that unlocks every tool. The trial is free, never renews and is never charged. When it ends, choose the plan that suits you: • Monthly — $1.99 per month • Yearly — $14.99 per year • Lifetime — $39.99, a one-time purchase with no subscription Prices are in Canadian dollars and shown in your local currency elsewhere. Yearly subscribers can upgrade to lifetime access at a reduced price. ALREADY OWN SPARKY'S CIRCKIT? Nothing changes. If you bought the app before it became free to download, every tool stays unlocked for life. There is nothing to subscribe to and nothing to buy. SUBSCRIPTION TERMS Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. You can manage your subscription and turn off auto-renewal in your Apple Account settings after purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.thesparky.work/privacy/