Town of Stonington (CT)

Connecticut Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2020

Fire Code Version2018 Building Code

SolarAPP+ StatusTargeted

Wet Stamps RequiredDigital Structural

Fire Setback Enforced1

Codes

NEC Code Version: 2020

Fire Code Version: 2018 Building Code

Code List: 2021 INTERNATIONAL BUILDING CODE 2017 INTERNATIONAL CODE COUNCIL ANSI A 117.1. ACCESSIBLE AND USABLE BUILDINGS AND FACILITIES 2021 INTERNATIONAL EXISTING BUILDING CODE 2021 INTERNATIONAL PLUMBING CODE 2021 INTERNATIONAL MECHANICAL CODE 2021 INTERNATIONAL ENERGY CONSERVATION CODE 2020 NATIONAL ELECTRICAL CODE 2021 INTERNATIONAL RESIDENTIAL CODE

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status: Targeted

Any SolarAPP+ Restrictions: 1

SolarAPP+ Restrictions: MPU,Derate

Revision Required: 0

New Planset Required For Module Swap: 0

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: Fire setback requirements follow 2018 Connecticut State Building Code, Section R324.7: (Add) R324.7 Access and pathways. Roof access, pathways and spacing requirements shall be provided in accordance with Sections R324.7.1 through R324.7.2.4. Exception: Detached garages and accessory structures to one and two-family dwellings and townhouses, such as parking shade structures, carports, solar trellises and similar structures. (Add) R324.7.1 Roof access points. Roof access points shall be located in areas that do not require the placement of ground ladders over openings such as windows or doors, and located at strong points of building construction in locations where the access point does not conflict with overhead obstructions such as tree limbs, wires or signs. (Add) R324.7.2 Solar photovoltaic systems. Solar photovoltaic systems shall comply with Sections R324.7.2.1 through R324.7.2.4. (Add) R324.7.2.1 Size of solar photovoltaic array. Each photovoltaic array shall be limited to 150 feet by 150 feet (45 720 by 45 720 mm). Multiple arrays shall be separated by a clear access pathway not less than 3 feet (914 mm) in width. (Add) R324.7.2.2 Hip roof layouts. Panels and modules installed on dwellings with hip roof layouts shall be located in a manner that provides a clear access pathway not less than 3 feet (914 mm) in width from the eave to the ridge on each roof slope where panels and modules are located. The access pathway shall be located at a structurally strong location on the building capable of supporting the live load of fire fighters accessing the roof. Exceptions: 1. This requirement shall not apply to roofs with slopes of two units vertical in 12 units horizontal (16.6 percent) and less. 2. Where panels are installed on only one roof slope and there is clear access on the opposing slope. (Add) R324.7.2.3 Single ridge roofs. Panels and modules installed on dwellings with a single ridge shall be located in a manner that provides two, 3-foot-wide (914 mm) access pathways from the eave to the ridge on each roof slope where panels or modules are located. Exceptions: 1. This requirement shall not apply to roofs with slopes of two units vertical in 12 units horizontal (16.6 percent) and less. 2. Where panels are installed on only one roof slope and there is clear access on the opposing slope. 138 (Add) R324.7.2.4 Roofs with hips and valleys. Panels and modules installed on dwellings with roof hips or valleys shall not be located less than 18 inches (457 mm) from a hip or valley where panels or modules are to be placed on both sides of a hip or valley. Where panels are to be located on one side only of a hip or valley that is of equal length, the 18-inch (457 mm) clearance does not apply. Exception: These requirements shall not apply to roofs with slopes of two units vertical in 12 units horizontal (16.6 percent) and less. \-----

Structural & loads

Wind Speed: 85

Snow Load: 999

Reducible Snow Load Allowed: 1

Max Attachment Spacing: 96

Structural Notes: Standard

Minimum Ground On Roof: #10

Electrical

Electrical Load Calcs Required: Derates

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

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