Put Electrical Code answers at your fingertips! Carry the ElectriCalc Pro in your briefcase or tool belt, and solve hundreds of electrical design & estimation problems instantly & accurately! Unlike a regular calculator, the ElectriCalc Pro has custom "electrical keys" with common National Electrical Code (NEC) tables built-in, allowing you to solve electrical/wiring problems quickly and accurately. It calculates wire sizes, voltage drop, conduit sizing and more!