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    NEC Conduit Fill Calculator (Chapter 9)

    Does the ground wire count in conduit fill?

    Yes. Every conductor in the raceway counts toward fill area, including equipment grounding conductors and the neutral, whether insulated or bare. Use the actual conductor area from Chapter 9 (Table 5 for insulated, Table 8 for bare) — the ground is not exempt, even though it is not a current-carrying conductor for derating purposes.

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    Use the NEC Conduit Fill Calculator (Chapter 9) to get an exact answer for your inputs.

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    Related questions

    Estimates and general guidance only. Verify against your local code and AHJ before any installation. Gas, electrical, and refrigerant work is hazardous to untrained users.

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