Wire Size & Ampacity Calc

About

Size conductors the way the code book does — without flipping pages. Pick NEC or IEC, enter the load, set the real conditions, and read the minimum conductor size on one screen. WHAT IT DOES - NEC (NFPA 70) Table 310.16 ampacities: copper and aluminum, 60/75/90 °C columns, 14 AWG to 500 kcmil - IEC 60364-5-52 method C ampacities: copper, PVC or XLPE, 1.5 to 300 mm² - Ambient-temperature correction and grouping adjustment applied automatically - 125 % continuous-load design current - Suggested breaker from the standard ladder, small-conductor caps included - Pro: full derating breakdown, conduit-fill summary (NEC Ch. 9 Table 1), voltage-drop cross-check, history and one-page PDF export BUILT FOR THE FIELD Big glove-friendly keys, an Outdoor Bright theme for direct sunlight, and everything works offline. PRIVACY Everything stays on your phone. No account, no ads, no tracking. A planning aid, not a substitute for the code — always confirm results with your local code authority and the current edition. PRO UNLOCKS: both NEC and IEC standards, full derating detail, conduit fill, voltage-drop checks, history and PDF export. Available as an auto-renewable subscription (monthly or yearly) or a one-time Lifetime purchase. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hdappstudio.com/wiresize/privacy/