U.S. code adoption
Michigan — 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 Michigan, with primary sources.
Is UL 858 required in Michigan?
Yes — effectively. Michigan 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 Michigan?
Yes. Michigan'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 Michigan use?
Michigan has adopted the 2023 edition of the National Electrical Code (NEC), effective 2024-03-12. Michigan Electrical Code (Part 8 rules) adopts the 2023 NEC (second printing) by reference with state amendments.
Is UL 9540 required for residential energy storage in Michigan?
Yes — effectively. Michigan requires NRTL listing for stationary energy storage systems (ESS) in dwellings, and UL 9540 is the controlling standard. ESS in residential dwellings governed by IFC §1207, 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 Michigan?
Yes — effectively. Michigan requires NRTL listing for energy storage systems, and UL 9540A is the controlling standard.
What is the residential energy-storage capacity limit in Michigan?
Michigan limits residential energy storage to 20 kWh per dwelling unit.
Which fire code does Michigan enforce?
Michigan enforces IFC.
Code adoption summary
| NEC edition | 2023 NEC |
|---|---|
| Appliance listing (UL 858) | Effectively required |
| NRTL listing requirement | Required |
| Fire code | IFC |
| 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 |
Local authorities in Michigan
Sources
- NFPA — NEC enforcement maps
- Michigan LARA — 2023 Part 8 Electrical Final Rules
- Michigan LARA — Code Books (Bureau of Construction Codes)
- Michigan House Democrats — Snyder bill
- HB 5764 of 2026 — Michigan Legislature