Lastsocket - Showcase Project

Does this cable pass? Type the current, the length and the cross-section; Lastsocket gives the voltage drop in volts and percent and a PASS or FAIL against the limit in your national pack (BS 7671, NEN 1010, DIN VDE 0100, NF C 15-100 or IEC), with the rule cited under the number. Every result opens a working card: conductor resistance at operating temperature (IEC 60228 values), the formula, every input, and a list of what was not checked. All five national packs are free. Ten calculators: voltage drop (single-phase, three-phase, DC 12/24/48 V, max length), cable size with both gates (Pro), ampacity, Ohm's law and power, diversity, pipe size, pressure loss, thermal expansion, room heat loss, and a unit converter. Free covers anything you type or pick. Pro (one-time, €9.99) is the app doing the lookup: bundled tables and factors, cable sizing, PDF with the working, 50-job history, CSV export. No subscription, no account, no analytics, no data collected. A design aid, not the code book: short-circuit, Zs and disconnection time are not checked, and the app says so on every result. Available on iPhone and Android; the voltage drop calculator is also free in the browser at lastsocket.com. I'm Mihai, an independent app developer in Cluj-Napoca, not an electrician, and I built Lastsocket. Questions and corrections on the numbers are very welcome: contact@lastsocket.com.