County of Montgomery (MD)
Codes
- NEC Code Version
- 2017
- Fire Code Version
- 2018 Building Code
- Code List
2021 INTERNATIONAL ENERGY CONSERVATION CODE
2021 INTENATIONAL RESIDENTIAL CODE
2021 INTERNATIONAL FUEL AND GAS CODE
2021 INTERNATIONAL MECHANICAL CODE
2021 INTERNATIONAL SWIMMING POOL AND SPA CODE
2021 INTERNATIONAL BUILDING CODE
2017 NATIONAL ELECTRIC CODE
- IEBC Accepted
- 0
- ASCE Code Specification
- ASCE 7-16
SolarAPP+ & submittal
- SolarAPP+ Status
- Adopted
- Any SolarAPP+ Restrictions
- 1
- SolarAPP+ Restriction Notes
SolarAPP excludes: Gaithersburg, Tacoma Park and Rockville sdue to historic and zoning rules
- SolarAPP+ Restrictions
- Existing Systems,Trenching,Historic District,Other
- How Many Plansets Required
- Other (See Submission Notes)
- Revision Required
- 1
- Rough Inspection
- None
- New Planset Required For Module Swap
- 0
Stamps
- Ee Stamp Required On SLD
- Yes
- Wet Stamps Required
- Digital Structural,Digital Electrical
- Structural Calculations Required
- Yes
- Ee Stamp Notes
- EE digital stamps. Electrical engineer must complete Moco checklist#2
- Stamps required for SolarAPP Projects
- Stamp Location On Plans
- Unspecified
- Date On Stamps
- Expiration Date
Fire setbacks
- Fire Setback Enforced
- 1
- Setback Notes
3' path required from the ridge on one side of the array.
Structural & loads
- Wind Speed
- 115
- Wind Notes
Exposure Category B
- Snow Load
- 30
- Reducible Snow Load Allowed
- 1
- Max Attachment Spacing
- 96
- Structural Notes
- SE digital stamps on corresponding PV pages & PE Letter / Calcs. (Note next to stamps that stamps are digital).
- Plans and calcs must be digitally signed and sealed by a MD licensed structural engineer.
- All structural sheets of the plans need to be stamped by same engineer who stamps the structural letter.
- Must have PE cert block next to any stamps on plans, letter, and checklist. Structural engineer must complete AHJ Moco checklist#1.
- Stamps required for SolarAPP Projects
- Minimum Ground On Roof
- #10
Electrical
- Electrical Load Calcs Required
- Derates
- Allowed POI
- Line Side Taps,Load Side Taps,PV Breaker,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
If exterior disconnect present (MBE or disconnect) always TAP exterior means of disconnect.
- Roof Plan
For Historic Properties Only: Please refer to pages 8-9 as an example IV-E (montgomeryplanning.org)
- Roof Plan Notes
- Electrical Diagram
Line Side Taps with no exterior MBE and a distribution panel in a non finished area will need 2 AC Disconnects:
- 1 Non Fused Knifeblade disco outside near the UM and 1 Fused AC Disco inside near the MSP.
Line Side Taps with no exterior MBE and a distribution panel in a finished area will need 2 AC Disconnects: EXAMPLE
- 1 Non Fused Knifeblade disco outside near the UM and 1 recess mounted 70amp breaker box with a breaker to match fuse size inside near the MSP.
Line Side Taps with an exterior MBE will need:
- 1 Fused AC Disconnect near the MBE and a tap in the MBE.
- Custom Placards Required
- 0
- Placards Notes
- All values must be put on with label maker or paint marker with clear cover sticker over top
Ground mount
- Ground Mount Fencing Required
- Yes
- Ground Mount Notes
1. Clearances
- Provide a 10-foot clearance around the ground-mounted PV installation.
- Note: This does not require the skirt or fence to be 10 feet away.
2. Noncombustible Base
- Install and maintain a noncombustible base under and around the array.
- Acceptable options include:
- Gravel over 4-mil poly or weed screen
- Concrete
- Asphalt
- Other materials approved by the AHJ
3. Security Barriers
- Provide fencing or flame-retardant skirting around the entire array.
- Fence requirements:
- Minimum 4 feet high
- Not easily climbable
- Gates must swing outward, away from the array
4. Zoning Requirements
- Must meet accessory structure setbacks for the applicable zoning district.
- System output may not exceed 120% of current electrical consumption.