Conductor Ampacity / Adjustment / NM Limits
Conductors
Field trigger: Bundled cables, attic heat, conduit fill derating, rooftop/ambient conditions, temperature rating, and NM cable ampacity issues.
2020 NEC lookup refs: 310.15310.16334.80110.14(C)
Hard-copy lookup path:
- Articles 310 and 334
- Tables and notes must be checked in the hard copy
Do-not-change-language workflow: Open these exact sections in your hard copy. If you want exact wording in GIES OS, type it into the owner-copy field below exactly as written.