U.S. code adoption
Hawaii — energy & appliance code adoption
Yes — effectively. This page summarizes electrical (NEC), appliance-listing (UL 858), fire-code, and energy-storage (UL 9540 / NFPA 855) code adoption for Hawaii, with primary sources.
Is UL 858 required in Hawaii?
Yes — effectively. Hawaii requires fixed household appliances to be listed by a Nationally Recognized Testing Laboratory (NRTL), and UL 858 is the de-facto listing standard a household electric range must meet.
Are NRTL-listed (UL / ETL / CSA) appliances required in Hawaii?
Yes. Hawaii's adopted code requires fixed electrical appliances to be listed by an NRTL (UL, ETL/Intertek, CSA, etc.) — NEC 110.3.
Which edition of the NEC does Hawaii use?
Hawaii has adopted the 2020 edition of the National Electrical Code (NEC). Hawaii State Building Code Council adopted NFPA 70 (2020) as the State Electrical Code; counties (Honolulu, Maui, Hawaii, Kauai) may adopt or amend on their own timeline.
Is UL 9540 required for residential energy storage in Hawaii?
Yes — effectively. Hawaii requires NRTL listing for stationary energy storage systems (ESS) in dwellings, and UL 9540 is the controlling standard. ESS in residential dwellings governed by NFPA 1 Ch. 52, referencing UL 9540 listing and NFPA 855 installation standard. UL 9540A required to exceed the default 20 kWh / dwelling cap or reduce default 3-ft separation.
Is UL 9540A fire-propagation testing required in Hawaii?
Yes — effectively. Hawaii requires NRTL listing for energy storage systems, and UL 9540A is the controlling standard.
What is the residential energy-storage capacity limit in Hawaii?
Hawaii limits residential energy storage to 20 kWh per dwelling unit.
Which fire code does Hawaii enforce?
Hawaii enforces NFPA-1. Hawaii State Fire Code based on NFPA 1.
Code adoption summary
| NEC edition | 2020 NEC |
|---|---|
| Appliance listing (UL 858) | Effectively required |
| NRTL listing requirement | Required |
| Fire code | NFPA-1 |
| IRC edition | 2018 IRC |
| UL 9540 (residential ESS) | Effectively required |
| UL 9540A propagation test | Effectively required |
| Residential ESS cap | 20 kWh / dwelling |
| NFPA 855 edition | 2017 |
Local authorities in Hawaii
Sources
- NFPA — NEC enforcement maps
- Hawaii State Building Code Council — DAGS
- DSIRE Insight — Plug-In Legislation