NEC Electrical Code Tools

NEC Electrical Code Tools is a comprehensive reference and calculation app built for electrical professionals. Whether you're an electrician in the field, an engineer at the design table, or a student learning the National Electrical Code, this app puts essential NEC tools right in your pocket.
Quickly size conductors, conduits, branch circuits, motor circuits, transformers, and generators using built-in calculators grounded in NEC requirements. Each module includes overviews, reference tables, and real-world case studies so you can understand the code — not just look it up.
What's Inside:
Conductor sizing and ampacity calculations. Conduit fill and bend radius tools. Branch circuit, feeder, and service sizing. Complete motor circuit design with an interactive schematic — tap any component to launch its calculator. Transformer engineering tools including delta-wye configurations and power factor correction. Generator capacity sizing with wiring diagrams. Grounding and bonding conductor sizing. Unit conversions for AWG, metric trade sizes, and circular mils. Code exhibits, formulas, and an illustrated requirements walkthrough. DC power simulation and electrical load calculation tools.
Designed for the Job:
Every calculator is purpose-built around NEC code articles so you can verify designs, check inspector requirements, and solve problems on the spot. The app works offline — no internet connection needed on the jobsite.
Who It's For:
Licensed electricians, electrical engineers, contractors, inspectors, journeymen, apprentices, and electrical engineering students.