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Wire Size / Ampacity Calculator (NEC)

Applies the full NEC Article 310 four-step derating chain — base Table 310.16 ampacity, ambient temperature correction, conductor bundling adjustment, and 110.14(C) termination-temperature cap — to auto-size a conductor or check a selected size.

AAJappsEngineering Calculation Report

Wire Size / Ampacity Calculator (NEC)

NEC Table 310.16, Table 310.15(B)(1), Table 310.15(C)(1), 110.14(C)

Generated

For preliminary engineering use only — always verify results against project-specific standards and a qualified engineer's review before use in a real design.

Mode & conductor

Load & installation conditions

A
°C

Ampacity result

Ambient correction factor1.00
Bundling adjustment factor1.00
Recommended size6 AWG/kcmil
Base ampacity (Table 310.16)65 A
Adjusted ampacity65.0 A
Termination cap65 A
Effective ampacity65.0 A
ResultMeets load ✓