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    Electrical Code Adoption

    Delaware Electrical Code: NEC 2020

    Delaware follows NEC 2020 as the basis for electrical work. Permits and inspections are issued by the local Authority Having Jurisdiction (AHJ), which may publish additional amendments.

    Adoption details

    Model code family
    NEC (NFPA 70)
    Adopted edition
    NEC 2020
    Last verified
    2026-05-29

    Related resources for Delaware

    Frequently Asked Questions

    What electrical code does Delaware use?

    Delaware currently follows NEC 2020 for electrical work. Always confirm the in-force edition with the local Authority Having Jurisdiction (AHJ) — county or city amendments can apply.

    Do I need a permit for electrical work in Delaware?

    Most electrical work in Delaware — including new installations, system replacement, and gas-fueled appliance hookups — requires a permit from the local building department and an inspection at completion. Homeowner permits are typically allowed for owner-occupied residences; commercial work requires a licensed contractor.

    Where do I check Delaware electrical code amendments?

    Local jurisdictions (city or county) often publish amendments on the state's building-codes board website or in the municipal code. The current NEC 2020 text is published by its model-code body (ICC, IAPMO, or NFPA depending on the trade).

    Reference guidance only — adoption editions and local amendments vary by city or county. Always confirm requirements with your local Authority Having Jurisdiction (AHJ) before designing, permitting, or constructing.

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