Resources / circuit calculator

Circuit calculator

1Your conductors

2Your raceway

Raceway type Short nipple (24" or less) — 60% fill

3Ampacity — adjustment & correction

Conductor / termination rating

Ambient temperature (use the highest you expect)

Current-carrying conductors

Based on the base 2023 NEC (NFPA 70) — states and local jurisdictions amend it. Check your local amendments before relying on this.