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Town of Williston (SC)

South Carolina Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2020

Fire Code Version2018 Building Code

Wet Stamps RequiredDigital Structural

Fire Setback Enforced0

Codes

NEC Code Version: 2020

Fire Code Version: 2018 Building Code

Code List: 2021 INTERNATIONAL BUILDING CODE 2021 INTERNATIONAL RESIDENTIAL CODE 2021 INTERNATIONAL FIRE CODE 2021 INTERNATIONAL PLUMBING CODE 2021 INTERNATIONAL MECHANICAL CODE 2021 INTERNATIONAL FUEL GAS CODE 2020 NATIONAL ELECTRICAL CODE 2009 INTERNATIONAL ENERGY CONSERVATION CODE (ENERGY STANDARD ACT)

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

Revision Required: 0

New Planset Required For Module Swap: 0

Stamps

Wet Stamps Required: Digital Structural

Structural Calculations Required: Yes

Fire setbacks

Fire Setback Enforced: 0

Setback Notes: Standard

Structural & loads

Wind Speed: 117

Snow Load: 10

Reducible Snow Load Allowed: 1

Minimum Ground On Roof: #10

Electrical

Allowed POI: Meter Adapter,Line Side Taps,Load Side Taps,PV Breaker

Panel Schedule Required: Partial Home Backup

Temperature Rating: 90

De Rating Ampacity: 0.91

Battery / ESS

Unique Battery Placards Needed: 0

ESS Notes: Standard

Separate ESS Disconnect Required: ESS Disconnect

ESS Elevation Detail Required: No

Ground mount

Ground Mount Fencing Required: Mesh/Scrim

Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the Town of Williston (SC) building department before you rely on this, and treat it as a research head start, not a ruling. Getting quotes? Run them through the quote checker first.