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    NEC Voltage Drop Calculator (Free)

    Does voltage drop require upsizing the EGC?

    Yes — NEC 250.122(B) requires the equipment grounding conductor to be increased proportionally when the ungrounded conductors are upsized for voltage drop, so the EGC maintains its fault-clearing capacity.

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    Use the NEC Voltage Drop Calculator (Free) 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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