Wire gauge, voltage drop, ampacity, and circuit breaker calculators for NEC-compliant wiring.
Determine the correct AWG wire gauge based on amperage, distance, voltage, and acceptable voltage drop.
Calculate voltage drop over a wire run to determine if your circuit meets NEC recommendations.
Calculate conduit fill percentage per NEC Chapter 9 to ensure your wiring installation is code compliant.
Determine the correct circuit breaker size for continuous, non-continuous, or mixed loads per NEC requirements.
Find wire ampacity with temperature and bundling derating per NEC 310.15 for safe conductor sizing.
Calculate box fill per NEC 314.16 to ensure your electrical boxes have adequate volume for all conductors and devices.
Calculate total wire needed for a project including box connections and waste factor, with cost estimate.