Overview
Built for practical use — this calculator helps electricians and DIYers estimate total circuit load before wiring. No frameworks, no dependencies, just clean vanilla HTML/CSS/JS that runs in any browser.
How It Works
Users input voltage, amperage, and the number of devices. The calculator applies standard electrical formulas (P = V × I) and accounts for the 80% continuous load rule from the NEC. Results show total wattage, recommended breaker size, and a safety margin indicator.
Building It
Started as a quick weekend project after running into circuit overload issues at home. The challenge was making the UI intuitive enough that someone without an electrical background could use it safely. Ended up adding visual load bars and color-coded warnings.
What's Next
Add support for multi-circuit panels, export results as PDF, and include a mode for solar panel sizing.