U.S. code adoption
South Carolina — 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 South Carolina, with primary sources.
Is UL 858 required in South Carolina?
Yes — effectively. South Carolina 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 South Carolina?
Yes. South Carolina'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 South Carolina use?
South Carolina has adopted the 2020 edition of the National Electrical Code (NEC). South Carolina Electrical Code based on NFPA 70 (2020) with state amendments, adopted by the SC Building Codes Council.
Is UL 9540 required for residential energy storage in South Carolina?
Yes — effectively. South Carolina 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 South Carolina?
Yes — effectively. South Carolina requires NRTL listing for energy storage systems, and UL 9540A is the controlling standard.
What is the residential energy-storage capacity limit in South Carolina?
South Carolina limits residential energy storage to 20 kWh per dwelling unit.
Which fire code does South Carolina enforce?
South Carolina enforces IFC 2021.
Code adoption summary
| NEC edition | 2020 NEC |
|---|---|
| Appliance listing (UL 858) | Effectively required |
| NRTL listing requirement | Required |
| Fire code | IFC 2021 |
| IRC edition | 2021 IRC |
| UL 9540 (residential ESS) | Effectively required |
| UL 9540A propagation test | Effectively required |
| Residential ESS cap | 20 kWh / dwelling |
| NFPA 855 edition | 2020 |
Sources