FIG. 00 — IN PROGRESS
WIRE AMPACITY CALCULATOR
Look up wire ampacity from NEC Table 310.16, then apply ambient-temperature correction (310.15(B)(1)) and 4+ current-carrying conductor adjustment (310.15(C)(1)).
⚠ STATUS · TOOL UNDER FINAL VALIDATION
We're finalizing this calculator's NEC validation. In the meantime, use the conduit fill calculator and the wire fill chart on the homepage.
FIG. 01
WHAT THIS TOOL WILL CALCULATE
- 01Inputs: wire material (copper/aluminum), gauge, insulation temperature rating, ambient temperature, number of current-carrying conductors in the raceway.
- 02Outputs: raw ampacity, adjusted ampacity, allowed termination ampacity (60/75/90 °C terminals).
- 03References: NEC 2023 Table 310.16, Table 310.15(B)(1)(1), Table 310.15(C)(1).
- 04Cross-references the wire fill chart when bundling triggers an adjustment factor.