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County of Johnston (NC)

North Carolina Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2017
Fire Code Version2018 Building Code
Wet Stamps RequiredDigital Structural
Fire Setback Enforced1

Codes

NEC Code Version
2017
Fire Code Version
2018 Building Code
Code List

2018 NORTH CAROLINA BUILDING CODE

2018 NORTH CAROLINA RESIDENTIAL CODE

2018 INTERNATIONAL BUILDING CODE

2018 INTERNATIONAL RESIDENTIAL CODE

2018 INTERNATIONAL MECHANICAL CODE

2018 INTERNATIONAL PLUMBING CODE

2018 INTERNATIONAL FUEL GAS CODE

2018 INTERNATIONAL ENERGY CONSERVATION CODE

2018 INTERNATIONAL EXISTING BUILDING CODE

2018 INTERNATIONAL SWIMMING POOL AND SPA CODE

2017 NATIONAL ELECTRICAL CODE

ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

How Many Plansets Required
1
Revision Required
1
New Planset Required For Module Swap
1

Stamps

Wet Stamps Required
Digital Structural
Structural Calculations Required
Yes
Stamp Location On Plans
Unspecified
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
1
Setback Notes

Standard

Structural & loads

Wind Speed
120
Snow Load
15
Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Structural Notes

SE Stamps/Calcs required if: THe wieght of the PV System exceeds 3 pounds PSF The roof possesses more than 1 layer of asphalt shingles The roofing material consists of a type other than asphalt shingles or metal The roof is located in a 140MPH or greater wind zone

Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
All Jobs
Allowed POI
Load Side Taps,PV Breaker,Line Side Taps,Meter Adapter
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

Plan set

Plan Set Requirements

LOAD CALCS REQUIRED FOR ALL JOBS

Cover Page Notes

Show wind speed, exposure and snow load notes on the cover page.

Ground mount

Ground Mount Fencing Required
Mesh/Scrim
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the County of Johnston (NC) 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.