Wire & Cable Calculators
Wire sizing, ampacity, and cable capacity calculations
Wire Size Calculator
Determine proper AWG wire size based on ampacity and voltage drop requirements
Wire Ampacity Calculator
Professional NEC-compliant conductor ampacity calculation with temperature and bundling derating factors
Cable Ampacity Calculator
Calculate cable current carrying capacity with temperature and bundling corrections per NEC
Conduit Fill Calculator
Calculate conduit fill percentages, maximum wire counts, and conduit sizing per NEC requirements