City of Modesto (CA)

California Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2023

Fire Code Version2018 Building Code

SolarAPP+ StatusAdopted

Wet Stamps RequiredNone

Fire Setback Enforced1

Codes

NEC Code Version: 2023

Fire Code Version: 2018 Building Code

Code List

2025 CALIFORNIA BUILDING CODE

2025 CALIFORNIA ELECTRICAL CODE

2025 CALIFORNIA FIRE CODE

2025 CALIFORNIA PLUMBING CODE

2025 CALIFORNIA MECHANICAL CODE

2025 CALIFORNIA ENERGY CODE

2025 CALIFORNIA RESIDENTIAL CODE

2025 CALIFORNIA ADMINISTRATIVE CODE

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status: Adopted

Date SolarAPP+ Accepted: 44518

Any SolarAPP+ Restrictions: 1

SolarAPP+ Restriction Notes: Does not accept PV+ST as of the start of their pilot. May change when fully adopted.

SolarAPP+ Restrictions: Existing Systems,Trenching

How Many Plansets Required: 3

Revision Required: 1

New Planset Required For Module Swap: 0

Stamps

Wet Stamps Required: None

Structural Calculations Required: Yes - Battery,Yes - Existing PV

Stamp Location On Plans: Unspecified

Date On Stamps: Expiration Date

Fire setbacks

Fire Setback Enforced: 1

Setback Notes: AHJ specifically wants 18" setbacks to straddle adjacent roofs when we have modules on both roof planes. they will not allow one 36 pathway.

Structural & loads

Wind Speed: 110

Wind Notes: Exposure Category B

Snow Load: 0

Snow Load Notes: N/A

Reducible Snow Load Allowed: 1

Max Attachment Spacing: 96

Structural Notes: **If we are not submitting structural, we need to fill out the expedited packet.** ****

Minimum Ground On Roof: #10

Electrical

Electrical Load Calcs Required: All Jobs,Derates,MPUs,Battery,Load Relocation,Taps

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

Panel Schedule Required: Partial Home Backup

Temperature Rating: 90

De Rating Ampacity: 0.91

Battery / ESS

Unique Battery Placards Needed: 1

ESS Notes

No ESS disco

When the ESS is located more than 5 feet from the connected equipment or passes through a wall there shall be a disconnecting means provided at the ESS, and a manual pull handle disconnect located outside.

Stand-alone systems (battery backup) shall have a permanent plaque on the exterior of the building or structure at a readily visible location.

The plaque shall indicate the location of the system disconnecting means, and that the structure contains a stand-alone electrical power system.

Separate ESS Disconnect Required: Local Disconnect,ESS Disconnect

ESS Elevation Detail Required: No

Plan set

Plan Set Requirements

If the utility is Modesto Irrigation District there must be a generation meter socket sandwiched between two ac disconnects after the inverter.

AHJ specifically wants 18" setbacks to straddle adjacent roofs when we have modules on both roof planes. they will not allow one 36" pathway.

Include the span tables for the attachment system.

Site placard to have the following note "CAUTION: MULTIPLE SOURCES OF POWER."

Cover Page

Please revise the plans to indicate the following on the cover sheet:

A. Building type of construction (usually VB). CBC Table 601
B. Occupancy group(s) of dwelling and garage (R3 & U). CBC 302.1
C. Please indicate (yes or no) if this structure is equipped or will be equipped with an automatic fire sprinkler system.
D. Building height above grade plane/number of stories

Cover Page Notes: All Jobs [General contractor is to verify the dwelling unit’s smoke and carbon monoxide alarms per CRC Sections R314 and R315, prior to the final inspection.]

Roof Plan: Provide roof photo report with planset

Roof Plan Notes: All Jobs [The point of access area will not be over any doors, windows, or other obstructions.]

Electrical Diagram: Centerfed 120% allowed FOR MID REQUIRMENTS: PV Plans Require 2 AC Disconnect's one for the (E) Solar and 1 for our New Solar, this is a MID requirement. SLD Corrections from AHJ 1 Generation meter socket (labeled NEMA 3R and UL-414 listed) between 2 AC Disconnects (shown on drawing) Specify that AC disconnects are knife blade lockable (shown on drawing )

Electrical Diagram Notes: All Jobs [Where a PV breaker is installed, the PV breaker shall be located at the opposite end of the busbar from the main breaker. // New electrical shall be located at least three (3) feet from gas meter or gas shut-off valves. CPC1208.7.1; CEC 110.26.] MPU [The wire size and type of the service feeding conductor for the main service panel shall be determined by the utility provider. // Grounding electrode conductor shall be sized per CEC 250.66.]

Custom Placards Required: 1

Placards Notes

ALL placards/labels from placard page of plan set need to be permanent/hard placards - Will not accept marker value fill ins or label makers
Need to specify in placard ordering to additionally make 'DUAL POWER SOURCE', 'PV SYSTEM AC DISCONNECT OUTPUT' & 'PV DISCONNECT DC OUTPUT' project specific/unique placards from placard page - (Standard is just the site plan/main placard)

Non Standard Planset Requirements: Single Line Diagram

Ground mount

Ground Mount Fencing Required: No