# Colorado — Which National Electrical Code edition each US state enforces: adoption status, effective dates and amendments, from the state boards themselves

For Colorado, adopting authority is State Electrical Board; announced transition is the Colorado Electrical Board held a Rulemaking Hearing on May 27, 2026, on proposed revisions to Rule 1.5 – INCORPORATION BY REFERENCE, for the purpose of adopting the current 2026 National Electrical Code (NEC); statute / rule citation is Rule 1.5 – INCORPORATION BY REFERENCE, recorded from its source on 2026-08-11.

- **State:** Colorado _(verified: appears in the quote below)_
- **Adopting authority:** State Electrical Board
- **Announced transition:** the Colorado Electrical Board held a Rulemaking Hearing on May 27, 2026, on proposed revisions to Rule 1.5 – INCORPORATION BY REFERENCE, for the purpose of adopting the current 2026 National Electrical Code (NEC)
- **Statute / rule citation:** Rule 1.5 – INCORPORATION BY REFERENCE _(verified: appears in the quote below)_

## What the source says

> The Colorado Electrical Board will hold a Rulemaking Hearing on May 27, 2026, at 9:00 A.M. (MDT), to receive feedback on proposed revisions to Rule 1.5 – INCORPORATION BY REFERENCE. The purpose is to adopt the current 2026 National Electrical Code (NEC).

## Source

- https://dpo.colorado.gov/Electrical

Last verified: 2026-08-11. Review by: 2026-12-09.
Part of [Which National Electrical Code edition each US state enforces: adoption status, effective dates and amendments, from the state boards themselves](https://referencesource.org/nec-edition-adoption-by-state/).