City of Norwalk (CA)

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

IEBC Accepted

1

ASCE Code Specification

ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status

Adopted

Any SolarAPP+ Restrictions

1

SolarAPP+ Restrictions

Existing Systems,Trenching

How Many Plansets Required

3

Revision Required

1

New Planset Required For Module Swap

0

Stamps

Ee Stamp Required On SLD

Yes

Wet Stamps Required

None

Structural Calculations Required

Yes

Stamp Location On Plans

Unspecified

Date On Stamps

Expiration Date

Fire setbacks

Fire Setback Enforced

1

Setback Notes

5' fire setbacks are required on the rake, accounting for overhang. 18 at the ridge is accepted if array coverage is below 33% Pathways must be over supported roof structure meaning setbacks start at a load bearing wall

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

SE/EE digital stamps on corresponding PV pages & PE Letter / Calcs. WS: 95mph. Exposure B. When adding to an existing system, the PE calcs must call out the roof being able to support both new and existing loads.

Minimum Ground On Roof

#10

Electrical

Electrical Load Calcs Required

Derates

Allowed POI

Line Side Taps,PV Breaker,Meter Adapter,Load Side Taps

Panel Schedule Required

Partial Home Backup

Temperature Rating

90

De Rating Ampacity

1

BOS Restrictions

Standard

Battery / ESS

Unique Battery Placards Needed

0

ESS Notes

[LACOF]

This AHJ follows County of Los Angeles (ESS Requirements) (CA).

Please follow this link to County of Los Angeles (ESS Requirements) (CA)

ESS disconnect required within 6ft of MSP on same wall and not blocked by walls/gates/etc

UL9540A is NOT recognized by this AHJ

[ESS Unit shall be installed and maintained a minimum of: // 3’ from another ESS unit, a structure corner, an intersecting wall, any door, window, operable opening into the building or HVAC inlet // 5’ from a lot lint, public way, another building, stored combustible material, hazardous material // 10’ from vegetation (PER LACFC, SECTION 1207.5.7).]

Separate ESS Disconnect Required

ESS Disconnect

ESS Elevation Detail Required

Yes - with dimensions

Plan set

Plan Set Requirements

Show the required working clearances around the Service meter main, AC Disconnect, Inverters, and DC disconnects 3' minimum.

Property lines have to be at least 3 ' away form the roof.

Shade unpermitted structures for plan checker (planning dept. request). This allows them to see that solar is not being placed on unpermitted structure. ADD NOTE: demolish or legalize separately on unpermitted structure

Remove pages PV 8,9,10 from Permit planset (create install planset with all pages)

Cover Page Notes

All Jobs [All PV equipment shall be listed by a recognized tested lab // Smoke and CO detectors are required]

Site

Property lines need to match assessor parcel map & must include parcel map

Show the required working clearances around the Service meter main, AC Disconnect, Inverters, and DC disconnects 3' minimum.

Property lines have to be at least 3 ' away from the roof.

Show setbacks from modules/equipment to the property line

Roof Plan

AHJ requires rail, attachments & rafters to be shown on roof plan.

Show conduit run on roof plan

Call out distance from edge of roof to front of solar panel 5” min clearance

Roof Plan Notes

All Jobs [Do not cover mechanical and plumbing vents on the roof with solar PV panels. // Modules installed on dwellings shall not be placed on the portion of a roof that is below a bedroom window. 36 inch wide pathway shall be provided for window opening.]

Attachment Detail

Specify the spacing of the module attachment method to mounting structure Framing plan to match solar arrays

Electrical Diagram

Wire sizes on Single line Diagram must be one up on the ground. If 10 AWG /8 EGC gauge needed

Electrical Diagram Notes

All Jobs [Inverter is equipped with arc fault protection // When a backfed breaker is the method of utility interconnection, breaker shall not read Line and Load. CEC 690-10 (E)]

Label Page

Provide full address on placard

Provide a warning label at the utility-interactive inverter or ground fault indicator stating "WARNING: ELECTRICAL SHOCK HAZARD. IF A GROUND FAULT IS INDICATED, NORMALLY GROUNDED CONDUCTORS MAY BE UNGROUNDED AND ENERGIZED."

If a switch or circuit breaker has all the terminals energized when in the open position, a label should be placed near it indicating: CEC 690.13(B). WARNING: ELECTRIC SHOCK HAZARD - TERMINALS ON BOTH THE LINE AND LOAD SIDES MAY BE ENERGIZED IN THE OPEN POSITION.

The main service disconnect will be labeled "SOLAR DISCONNECT"

Custom Placards Required

1

Placards Notes

All placards listed on the plans, must include the "PV DC DISCONNECT" placard with the current and voltage ratings. Must also include inverter current and output placard.

Ground mount

Ground Mount Fencing Required

Mesh/Scrim