County of Los Angeles (East Los Angeles) (CA)

California Authority Having Jurisdiction Solar permitting requirements

NEC Code Version2023

Fire Code Version2018 Building Code

Wet Stamps RequiredDigital Structural

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

IEBC Accepted: 1

ASCE Code Specification: ASCE 7-16

SolarAPP+ & submittal

Revision Required: 0

New Planset Required For Module Swap: 0

Stamps

Ee Stamp Required On SLD: No

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: Standard

Structural & loads

Wind Speed: 110

Wind Notes: Exposure Category B

Snow Load: 999

Snow Load Notes

Elevations between 2000 and 3500 ft. require 20 psf snow load
Elevations between 3500 and 5000 ft. require 40 psf snow load
Elevations greater than 5000 ft. require 80 psf snow load

Reducible Snow Load Allowed: 1

Max Attachment Spacing: 96

Structural Notes: Standard

Minimum Ground On Roof: #8

Electrical

AC Disconnect Required: Yes

Electrical Load Calcs Required: Derates

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

Panel Schedule Required: Partial Home Backup

Temperature Rating: 75

De Rating Ampacity: 0.96

Battery / ESS

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

Separate ESS Disconnect Required: ESS Disconnect

ESS Elevation Detail Required: Yes - with dimensions

Plan set

Site

ALL JOBS

All buildings on property are to be properly labeled and called out as habitable or non-habitable.

WHEN THE PROJECT INCLUDES AN MPU, THAT WILL REMAIN IN THE EXISTING LOCATION

Site Notes: All Jobs [ALL ELECTRICAL EQUIPMENT SHALL BE LABELED, LISTED, OR CERTIFIED BY A NATIONALLY RECOGNIZED TESTING LABORATORY ACCREDITED BY THE UNITED STATES OCCUPATIONAL SAFETY HEALTH ADMINISTRATION.]

Roof Plan

For systems with multiple strings/inverters

The roof plan shall clearly identify how all modules are mapped to each string and/or inverter input

Attachment Detail: Distance from top of module to roof shall be called out

Electrical Diagram

Identify if the main panel is fed via an overhead drop or underground feed.

If overhead, provide the size of the service entrance conductors AND ground size (GEC) Identify GEC size to Table 250.66

FOR HOT BUS PROJECTS

Provide a panel schedule identifying all the breakers

FOR BATTERY PROJECTS

ESS spec sheet must show compliance with UL 9540
Show the distance between the ESS and the connected equipment. If more than 5 ft, overcurrent protection to be provided at the ESS.

FOR EV CHARGING PROJECTS

Residential load calcs to include 125% of the EV equipment with no reductions.

Electrical Diagram Notes

All Jobs [THE PV BREAKER SHALL BE LOCATED AT THE OPPOSITE END OF THE MAIN BREAKER OR INPUT FEEDER // LL TERMINALS TO BE RATED AT 75°C MINIMUM // ALL ELECTRICAL WORK SHALL BE DESIGNED PER 2025 LOS ANGELES COUNTY ELECTRICAL CODE, 2025 CALIFORNIA ELECTRICAL CODE, AND 2023 NATIONAL ELECTRICAL CODE. // 110.2 APPROVAL: ALL ELECTRICAL EQUIPMENT SHALL BE LABELED, LISTED, OR CERTIFIED BY A NATIONALLY RECOGNIZED TESTING LABORATORY ACCREDITED BY THE UNITED STATES OCCUPATIONAL SAFETY HEALTH ADMINISTRATION.]

MPU [INCLUDE NOTE - GEC SIZE FROM MAIN SERVICE PANEL TO GROUND ROD TO BE #4 AWG. SIZE OF GEC FROM PANEL TO METAL WATER PIPE TO BE #4 AWG Add note: THE CONNECTION TO THE INTERIOR METAL WATER PIPING SHALL BE MADE WITHIN 5 FT FROM THE POINT OF ENTRANCE. PER SECTION 250.68(C)(1) // COLD WATER WITHIN 5 FEET AND AT LEAST ONE SUPPLEMENTAL ELECTRODE ARE REQUIRED // THERE SHALL BE TWO GROUND RODS SEPARATED BY SIX OR MORE FEET // GEC SIZE IS #4 AWG 1 GROUND ROD TO BE INSTALLED WITHIN 5' OF COLD WATER MAIN ENTERING THE HOME, CONNECTED VIA UL LISTED BONDING CLAMP // IF THE PROPOSED NEW MAIN PANEL IS LOCATED MORE THAN 6 FEET FROM THE EXISTING MAIN PANEL, COMBINATION-TYPE AFCI BREAKERS SHALL BE USED AS A METHOD OF PROTECTION FOR ALL 15A/1P AND 20A/1P (120V) LOADS PER 210.12(D)]

If solar ready MPU: Show model number for solar ready service panels

Battery [BACK UP LOAD CENTER WILL COMPLY WITH 210.12(A) USING AFCI BREAKERS // BOND GROUNDING SYSTEM IN BOTH BUILDINGS. NEUTRAL BUS AT SEPARATE BUILDING SHALL BE ISOLATED // THE SUB PANEL OR AC DISCONNECT SWITCH AT THE SEPARATE STRUCTURE SHALL BE SERVICE RATED 225.36 SUITABLE FOR SERVICE EQUIPMENT // THE DISCONNECT MEANS SPECIFIED IN SECTION 225.31 SHALL BE SUITABLE FOR USE AS SERVICE EQUIPMENT PER SECTION 225.36]

FOR GMA PROJECTS

The wire from the inverter to the AC disconnect must also be sized to #6 Per SCE requirements, specify the distance from the GMA to the fused disconnect as 2-3' maximum
Indicate that equipment grounding electrode conductor (EGC) shall be in separate conduit. The EGC is not installed in the liquid-tight flexible conduit from the AC disconnect
GMA requires GEC to be run in its own conduit to MSP

Label Page

ALL PROJECTS

All 3 F.D. ELECTRICAL BLDG DISCONNECT placards are required on all jobs even if there is no battery install

FOR BATTERY PROJECTS

CEC 705.12(B)(3): CAUTION TRI POWER SOURCE SECOND SOURCE IS AC BATTERY THIRD SOURCE IS PV INVERTER

Ground mount

Ground Mount Fencing Required: Mesh/Scrim