314.16(B): Volume Allowances

Source: NEC 2020

Volume allowance required per conductor based on wire size.

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Size of Conductor (AWG)	Free Space per Conductor (in³)
18	1.50
16	1.75
14	2.00
12	2.25
10	2.50
8	3.00
6	5.00

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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.