CH 3
310.16

Allowable Ampacities

NEC 2020 • 2023 • 2026 COMPLIANTFULL
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The master NEC ampacity table for all insulated conductors and terminal temperature ratings.

Size (AWG/kcmil)Copper 60°C (TW, UF)Copper 75°C (RHW, THHW, THW, THWN, XHHW)Copper 90°C (THHN, THHW, THW-2, THWN-2, XHHW-2)Alum 60°C (TW, UF)Alum 75°C (RHW, THHW, THW, THWN, XHHW)Alum 90°C (THHN, THHW, THW-2, THWN-2, XHHW-2)
16101010---
14152025---
12202530152025
10303540253035
8405055304045
6556575405060
4708595556575
385100110657585
2951151307590100
111013015085100115
1/0125150170100120135
2/0145175195115135150
3/0165200225130155175
4/0195230260150180205

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Related NEC Tables

Table 310.15(B)(1): Temperature CorrectionTable 310.15(C)(1): Conductor AdjustmentQuick Reference

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This data is provided for informational purposes only. Always verify with the latest edition of the National Electrical Code (NFPA 70) and consult with a licensed electrical professional or AHJ (Authority Having Jurisdiction) before performing any electrical work. Zing² is a reference tool, not a substitute for qualified engineering.