Local authority · Michigan
Detroit — energy & appliance code adoption
Yes — effectively. Detroit follows MI state-adopted 2023 NEC and Michigan Residential/Building Codes. BSEED administers locally with administrative amendments only — no technical NEC deviations. Below: how Detroit differs from Michigan on appliance listing, NEC, fire code, and energy storage, with sources.
Is UL 858 required in Detroit?
Yes — effectively. Detroit 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 Detroit?
Yes. Detroit's adopted code requires fixed electrical appliances to be listed by an NRTL (UL, ETL/Intertek, CSA, etc.) — 2023 NEC 110.3(B) as adopted by MI Part 8. NRTL listing required; enforced by Detroit BSEED.
Which edition of the NEC does Detroit use?
Detroit has adopted the 2023 edition of the National Electrical Code (NEC), effective 2024-03-29. Michigan adopted the 2023 NEC as Part 8 Electrical Code (Mich. Admin. Code R 408) effective 2024-03-29; enforced in Detroit by BSEED.
Is UL 9540 required for residential energy storage in Detroit?
Yes — effectively. Detroit requires NRTL listing for stationary energy storage systems (ESS) in dwellings, and UL 9540 is the controlling standard. MI on 2015 IFC — predates §1207 restructure; ESS handled under §608 stationary storage batteries. Detroit BSEED + Fire Marshal layered review fills the code gap; AHJ typically requires UL 9540 listing + 9540A data per NFPA 855 best practice.
Is UL 9540A fire-propagation testing required in Detroit?
Yes — effectively. Detroit requires NRTL listing for energy storage systems, and UL 9540A is the controlling standard.
What is the residential energy-storage capacity limit in Detroit?
Detroit limits residential energy storage to 20 kWh per dwelling unit.
Which fire code does Detroit enforce?
Detroit enforces IFC 2015. Detroit Fire Marshal + state Bureau of Fire Services.
Code adoption summary
| NEC edition | 2023 NEC |
|---|---|
| Appliance listing (UL 858) | Effectively required |
| NRTL listing requirement | Required |
| Fire code | IFC 2015 |
| IRC edition | 2015 IRC |
| UL 9540 (residential ESS) | Effectively required |
| UL 9540A propagation test | Effectively required |
| Residential ESS cap | 20 kWh / dwelling |
| NFPA 855 edition | 2017 |
Sources