What Electrical Code Does the District of Columbia Use?
The District of Columbia enforces the 2014 edition of the National Electrical Code (NEC 2014), effective May 29, 2020, with state amendments.
- Code edition
- NEC 2014
- Adoption type
- Statewide adoption with state amendments
- Effective date
- May 29, 2020
- Data current as of
- July 6, 2026
Adoption details
The DC Construction Codes (2017 code cycle, effective May 2020) incorporate the 2014 NEC with District amendments. A newer code cycle has been in development for several years. Verify the currently enforced edition with the DC Department of Buildings before designing to it.
The AHJ decides. Always verify locally
State adoption sets the baseline, not the final word. Cities and counties can layer amendments on top of the state code, run behind or ahead of the state's edition, or, in local-adoption states, enforce a different edition entirely. The enforceable code for any project is whatever the authority having jurisdiction issuing the permit says it is. Confirm the edition and local amendments with the AHJ before design or bid. Adoption status also changes on state rulemaking cycles; this page reflects reconciled adoption-tracker data as of July 6, 2026.
Calculators for the District of Columbia electrical work
Every calculator on this site documents the National Electrical Code table and edition it implements, so results can be checked against the edition enforced in the District of Columbia.
Preparing for the District of Columbia exam?
Journeyman and master licensing exams reference the adopted NEC edition, so knowing the District of Columbia enforces the NEC 2014 tells you which code to study. Drill the calculations and code lookups with the free journeyman electrician practice test and master electrician practice test before test day.
Continuing education and exam prep
Many licensing jurisdictions require continuing education hours each renewal cycle. Mike Holt's continuing education courses are organized by state, and his exam preparation programs cover journeyman and master license exams. Confirm any course is approved for your license and jurisdiction in the District of Columbia before enrolling.
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Results are for reference only. Verify against the applicable adopted edition of the NEC and consult a licensed electrician for code compliance.