🔌
Wire & Cable Calculators
Wire sizing, voltage drop calculations, ampacity charts, and conduit fill calculators for electrical wiring.
Wire Size Calculator
Find the correct AWG wire gauge for your circuit based on amperage and wire run distance. Follows NEC ampacity guidelines.
Voltage Drop Calculator
Calculate voltage drop over a wire run given current, wire length, and AWG gauge. Check NEC 5% compliance.
Wire Ampacity Chart
NEC ampacity table for copper conductors at 75°C. Look up maximum current-carrying capacity by AWG gauge.
Wire Resistance Calculator
Calculate the electrical resistance of a wire by AWG gauge and length. Shows one-way and round-trip resistance.
Conduit Fill Calculator
Calculate conduit fill percentage and maximum wire count per NEC 40% fill rule. Supports standard conduit sizes.