County of Howard (MD)

Maryland Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2023

Fire Code Version2018 Building Code

SolarAPP+ StatusTargeted

Wet Stamps RequiredDigital Structural

Fire Setback Enforced1

Codes

NEC Code Version: 2023

Fire Code Version: 2018 Building Code

Code List

2021 INTERNATIONAL BUILDING CODE

2021 INTERNATIONAL RESIDENTIAL CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

2021 INTERNATIONAL MECHANICAL CODE

2021 INTERNATIONAL PLUMBING CODE

2021 NFPA 101 LIFE SAFETY CODE

2021 INTERNATIONAL PROPERTY MAINTENANCE CODE

2023 NATIONAL ELECTRICAL CODE

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status: Targeted

Any SolarAPP+ Restrictions: 1

SolarAPP+ Restrictions: MPU,Derate

How Many Plansets Required: Other (See Submission Notes)

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: Per city council bill no. 71-2021, pathways are not required when photovoltaic systems are installed on only one side of the roof structure. Other than this exception, the AHJ follows 2018 modified setbacks.

Structural & loads

Wind Speed: 115

Wind Notes: Exposure Category B

Snow Load: 40

Reducible Snow Load Allowed: 1

Max Attachment Spacing: 96

Structural Notes: If there is to be a fused disco inside, use a flush-mounted breaker housing instead of a surface-mounted knife-blade switch. Former is aesthetically pleasing. Latter is not. [a past project (Tony). DCR 052021] Test, SE digital stamps on corresponding PV pages & PE Letter / Calcs.

Minimum Ground On Roof: #10

Electrical

Electrical Load Calcs Required: Derates

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

Panel Schedule Required: Partial Home Backup

Temperature Rating: 90

De Rating Ampacity: 0.91

BOS Restrictions: If there is to be a fused disco inside, use a flush-mounted breaker housing instead of a surface-mounted knife-blade switch. Former is aesthetically pleasing. Latter is not.

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: If LINE SIDE TAP, there is to be a fused disco inside, use a flush-mounted breaker housing instead of a surface-mounted knife-blade switch. Former is aesthetically pleasing. Latter is not. Unfused disconnect on the exterior of home. If exterior service disconnect present on site: always TAP the exterior disconnect, only exterior disconnect needed in this case ALWAYS refer to IRC 2018 324.6 fire code setbacks off-sets always required in Howard County If there is to be a fused disco inside, use a flush-mounted breaker housing instead of a surface-mounted knife-blade switch. Former is aesthetically pleasing. Latter is not. Check service cable to see if frayed If so will require replacement to pass inspection

Ground mount

Ground Mount Fencing Required: Mesh/Scrim