City of El Cajon

A city address is usually permitted by the city, not the county — but not always, and some authorities keep building and hand electrical to someone else. Getting this wrong costs the whole submittal, because every requirement below belongs to whoever actually holds jurisdiction. Check the overlays in the same pass: an HOA, a historic district, a windstorm certification or a system-size cap can reshape the design, and all of them are cheaper to find now than after the array is laid out.

• Is this authority the AHJ for residential solar at this address? Yes - the City of El Cajon Community Development Department, Building and Fire Safety Division (200 Civic Center Way) is the AHJ for residential rooftop PV inside the city limits. San Diego County is a separate AHJ for the unincorporated area only and none of its answers carry over. Note the address trap: the City's own PACO FAQ warns that 'Many unincorporated San Diego County addresses have El Cajon listed as the city' - a postal El Cajon address is NOT proof of City jurisdiction, and the City directs applicants to an interactive jurisdiction map before applying. 95% · department permit page
• What does this authority permit itself, and what does it delegate? Both, and fire as well, in ONE division. The brief's likely assumption of a separate building department and a separate fire department is wrong here: El Cajon runs a single 'Building and Fire Safety Division' (day-to-day name 'Building Safety') inside the Community Development Department, which does building plan check, electrical permitting, fire-code plan review and field inspection. Fire SERVICE is provided by Heartland Fire & Rescue, a joint exercise of powers agreement between the Cities of El Cajon, La Mesa and Lemon Grove entered into on 1 January 2010 - a shared single management team (Fire Chief, Fire Marshal, Deputy Fire Marshal) across three cities, NOT a contract-out to another city or to a fire district. Each city keeps local control and its own fee schedule. El Cajon's fee schedule carries a line 'Heartland Fire and Rescue Permit/Plan Review Processing Services $45.00', so the City bills the Heartland review through its own counter. For a rooftop PV job the placard and access rules that apply are the CITY's (ECMC 15.56 adopting the 2025 CFC, plus the Building and Fire Safety Division's own PV installation-standards handout) - Heartland publishes no PV document of its own. 90% · fire department About page + city department page + adopted fee schedule
• Is a permit required for a residential rooftop PV system? Yes. ECMC 15.24.010 requires a permit from the building department before any electric wiring, device, appliance or equipment is installed or altered, and ECMC 15.92.050(A) directs the Building and Fire Safety Division to issue a building permit for small residential rooftop solar. The City offers no permit-free route: SolarAPP+ is an instant permit, not an exemption. 95% · municipal code
• Is there a separate electrical permit, or is it combined? Combined - one permit. ECMC 15.92.050(A) speaks of a single building permit, the SolarAPP+ route issues one permit through PACO, and the PV fee itself sits in the fee schedule's ELECTRICAL FEES table ('PV System (up to 50 modules) $250.00'), so there is no second stand-alone electrical permit to pull for a rooftop array. A separate electrical permit chapter (ECMC 15.24) exists and governs the electrical work, but it is administered through the same application. 80% · adopted fee schedule + municipal code
• Is a HOA or architectural approval required first? No. ECMC 15.92.050(D) is categorical: 'No approval of any association is required for the issuance of a permit for a solar energy permit, electric vehicle charging station, or advanced energy storage system.' That mirrors Gov. Code 65850.5. A homeowners association may still have private covenants, but the City will not condition the permit on them and does not ask for HOA approval anywhere in the submittal. 95% · municipal code
• Is there a historic-district review? No historic-district review applies to residential rooftop solar. El Cajon has no historic-district overlay: a search of the whole municipal code for 'historic district' returned only a definitional cross-reference inside the flood-damage chapter (ECMC 15.14.030). What does exist is ECMC Chapter 17.55 HISTORIC PRESERVATION in the zoning title, under which an owner of an improvement may REQUEST designation of an individual historic resource, the Planning Commission reports to the City Council, and 'Alteration' is defined as any exterior change or modification of a designated historic resource. Even on a designated resource, ECMC 15.92.050(B) limits review of a small residential rooftop solar application to whether it meets health and safety requirements, and the SolarAPP+ route involves no discretionary review at all. 78% · municipal code
• Is a wind or windstorm certification required? No. There is no wind or windstorm certification in El Cajon - a whole-code search for 'windstorm' returned zero results, and no such certificate appears in the Building Safety forms library. What the City does publish is a design PARAMETER, not a certification: the Building Design Criteria sheet gives a minimum basic wind speed of 100 mph for Risk Category I, 110 mph for II and 115 mph for III and IV (3-second gust), with surface roughness generally Exposure B but possibly C depending on site conditions. ECMC 15.54.030 amends CRC Table R301.2 (Climatic and Geographic Design Criteria) - the local hook for those values. 88% · municipal code search + published design-criteria handout
• Is a Specific Use Permit or Council approval ever required? Only on a written adverse-impact finding, and it is a minor CUP rather than a council approval. ECMC 15.92.050(E): if the building official finds that the installation 'will have a specific, adverse, impact upon the public health or safety, requiring a conditional use permit or minor conditional use permit pursuant to Chapter 17.50 of this code the decision shall be in writing, and may be appealed to the Planning Commission as provided in Chapter 17.30.' If a minor CUP is required and the director of community development finds no feasible mitigation and denies it, that denial is likewise appealable to the Planning Commission. Ordinary rooftop PV therefore needs no council or commission approval; the discretionary door only opens on a written finding. 92% · municipal code
• Is there a system-size cap on residential generation? No cap on what may be installed - a threshold for who gets the fast route. ECMC 15.92.010 defines a 'small residential rooftop solar energy system' as one no larger than 10 kilowatts AC or 30 kilowatts thermal, conforming to the applicable state fire, structural, electrical and other codes, installed on a single or duplex family dwelling, with a panel or module array not exceeding the maximum legal building height under Title 17. The City's own Expedited Photovoltaic Application repeats the threshold as criterion 1, 'Maximum 10 kilowatt AC output', with criteria 2-6: roof mounted residential limited to two stories; only one central inverter or micro-inverters, with integrated DC disconnect and integrated DC arc-fault protection; minimum conduit size 3/4 inch; two ground rods and a water bond, or a single ufer ground; and 'Proposed PV system is not a 2nd system, nor an addition to an existing system.' Anything larger or outside those criteria is not banned - it goes to standard plan check. 90% · municipal code + published application form

Several authorities require the electrical permit to be pulled by a licensed electrician, or require the contractor to be registered with them BEFORE applying. Registration is not same-day. This is second on the list rather than fourth because it is the step most likely to stop the job before the drawings matter.

• Who is allowed to pull the electrical permit? Either - but the two routes are split. A licensed contractor (with a current City of El Cajon business license) or the property owner may pull the permit. ECMC 15.24.020 lets the building official issue a permit to an individual property owner after the owner of record signs an ownership affidavit. HOWEVER the City restricts the instant route: 'If you are a licensed contractor or installer, you may register for a new SolarAPP+ account (Non-licensed/owner-builders must apply for a regular Building Permit with Plan Check.)' So SolarAPP+ is contractors only; owner-builders are pushed onto the plan-check path. 92% · department permit page + municipal code
• Must the contractor be registered with this authority before applying? Yes - a current City of El Cajon BUSINESS LICENSE is required of the contractor before a permit is issued. The Building Permits page lists, for contractor permits: 'A permit application with project description; A workers' compensation certificate; Contractors State License information; A current City of El Cajon business license.' There is no separate contractor-registration scheme beyond the business license and CSLB licence. 90% · department permit page
• Is a homeowner permitted to self-install and self-permit? Yes, but not on the fast route. ECMC 15.24.020 authorises a special owner's permit on a signed ownership affidavit, the forms library publishes an 'Owner Builder Form' and an 'Authorization to Sign Permit for Property Owner', and the Building Permits page sets out the owner/builder documents (owner-builder declaration signed, permit application with job description, identification as the property owner). The Photovoltaic page then excludes owner-builders from SolarAPP+ and routes them to a regular Building Permit with Plan Check. 92% · department permit page + municipal code + published form

Almost everywhere wants a site plan, a one-line or three-line electrical diagram, equipment cut sheets with listings, and a structural attachment detail. Build it against the published checklist rather than the last jurisdiction you worked in — the checklist is what the reviewer marks against.

• What documents make up a complete submittal? Two different packages, depending on route. (A) SOLARAPP+ (contractors; MANDATORY for any PV-with-battery since 1/2026): no plans at all - 'PLANS ARE NOT REQUIRED'. You get SolarAPP+ pre-approval, then log in to PACO, enter the SolarAPP+ pre-approval ID number, upload the required documentation, pay, and the permit issues electronically. Then 'complete the third party inspection declaration on the permit and upload to PACO using the ATTACHMENTS tab, and request a Final Review'. (B) STANDARD PLAN CHECK (owner-builders, anything outside SolarAPP+ eligibility): the City's Expedited Photovoltaic Application form, which is a self-contained 8-step package - Step 1 specification sheets for inverter, micro-inverter, modules, racking/roof attachment system, optimizer and rapid shutdown; Step 2 module data and conductor sizing calculation; Step 3 inverter data and AC conductor sizing; Step 4 point of connection to utility with the busbar table; Step 5 wiring diagram; Step 6 site plan and roof layout with fire clearances; Step 7 labelling; Step 8 signed general notes under penalty of perjury. Add the general permit application, a plot plan per the Plot Plan Requirements handout, and - specific to El Cajon - 'New meters or meter upgrades will need documentation of approved location from SDG&E'. 85% · published application form + department permit page
• How many copies, and in what format? Electronic only, through PACO, one complete PDF per required item. 'Submittals shall be in electronic format via PACO website.' ECMC 15.92.040(B) requires electronic submittal to be made available and 15.92.040(C) requires an applicant's ELECTRONIC SIGNATURE to be accepted in lieu of a wet signature. Paper is discouraged by price rather than banned: the fee schedule carries an 'Intake fee for paper plan submittal $45.00' on top of the ordinary issuance fee. No copy count is published for PV (the '10 copies' figure in the City's Plan Submittal Requirements document belongs to PLANNING permits, not building/PV, and does not apply). 85% · department permit page + municipal code + fee schedule
• Is a site plan required, and what must it show? Yes. On the SolarAPP+ route the site plan is inside the SolarAPP+ submission rather than the City's. On the standard route the City's Expedited Photovoltaic Application, Step 6 'Fire Clearance at Roof', requires a site plan and roof layout drawn in the space provided or attached, showing fire department roof access and ridge clearances, with the printed guidance '18 inch fire access clearance required at ridge and 3 ft along roof edges', '18 inch fire access clearance required at both sides of valleys', 'No panels allowed over roof vents', 'Roof slopes less than 2 in 12 do not require access pathways per CFC 1204.2', and 'Show and label location of meter and inverter'. Separately, the Plot Plan Requirements handout (rev 5/17) governs the general plot plan: minimum sheet 8.5 x 11, north arrow, stated scale, parcel area and dimensions, Assessor Parcel Number, bordering street names and widths, all utility and open-space easements with use and dimensions, driveway locations and widths, all existing and proposed buildings with their use, distances to property lines and between buildings, and slopes and banks. 90% · published application form + published checklist
• Is a one-line / three-line diagram required? Yes on the standard route, no on SolarAPP+. The Expedited Photovoltaic Application Step 5 requires a completed typical wiring diagram - separate templates for a central inverter and for micro-inverters - with conductor sizes at locations A and B, PV OCPD size, panel amperage, equipment grounding conductor size, grounding electrode conductor and grounding electrode all filled in, or 'provide separate standard wiring diagram'. SolarAPP+ jobs submit no diagram to the City at all ('PLANS ARE NOT REQUIRED'). 90% · published application form
• Are string and conductor calculations required? Yes on the standard route. The Expedited Photovoltaic Application makes the applicant do the arithmetic on the form: Step 2 'Isc rating ___ X # Strings ___ X 1.25 = ___' with a printed conductor table (under 20 A use #12 at location A, 20-30 A use #10, 30-40 A use #8, and 'If wire run is over 100 feet increase by one wire size'), and 'Voc rating ___ X # modules (per string) ___ X 1.1 = ___' with the note '(Maximum voltage per string connection at inverter cannot exceed 600 volts.)'. Step 3 repeats the exercise for the inverter's maximum continuous AC output current at location B. Step 8 note 3 adds that 'The amperage of strings at connection to the inverter cannot exceed the inverter short circuit input rating.' 90% · published application form
• Is a structural PE stamp required, and at what threshold? No structural PE stamp threshold is published for residential rooftop PV, and none is imposed by ordinance. Instead the City publishes a Building Design Criteria sheet giving the parameters a designer must use - and that sheet is STALE: revised 1/2020 and still listing the 2019 code editions throughout, while ECMC Title 15 adopts the 2025 editions and the department's own landing page says the City enforces the 2025 California Building Standards Code from 1 January 2026. Its substance: minimum basic wind speed 100 mph (Risk Category I), 110 mph (II), 115 mph (III and IV), 3-second gust; surface roughness generally Exposure B but possibly C depending on site conditions; seismic design category D2 assumed for CRC-designed structures unless substantiated by analysis; site soil Class D unless a site-specific geotechnical report says otherwise; Title 24 Climate Zone 10. 75% · published design-criteria handout

Most authorities now take the whole application through a portal, and several states cap or constrain what a residential solar permit may cost. Check whether plan check is billed separately before you quote the job.

• Which permit portal does this authority use? PACO - the Project Assistance Center Online - which is Tyler Technologies EnerGov Citizen Self Service, hosted at elcajonca-energovpub.tylerhost.net/Apps/SelfService, reachable from www.elcajon.gov/PACO. Solar sits on top of it: contractors get pre-approval at gosolarapp.org, then enter the SolarAPP+ pre-approval ID into a dedicated PACO permit application. PACO handles submittal, fee payment, corrections and redlines, inspection scheduling and the daily inspection results list. A log-in procedure change took effect 15 April 2024 and the City publishes account-registration instructions. 95% · portal landing page
• Can the whole application be completed online? Yes. Registration, application, document upload, fee payment, correction/redline review, resubmittal, inspection scheduling and permit issuance are all in PACO, and ECMC 15.92.040(C) requires an electronic signature to be accepted in lieu of a wet signature. On the SolarAPP+ route the whole thing completes without a plan set and without a counter visit. The City still keeps a counter open (paper submittal costs an extra $45 intake fee) and tells applicants with an unlisted permit type to phone or come in. 92% · portal FAQ + municipal code
• What does a residential solar permit cost? $250.00 for the PV system itself on a system of up to 50 modules, plus flat adders. The adopted fee schedule (Exhibit A to Resolution No. 036-26, adopted 12 May 2026, effective 13 July 2026) sets, under ELECTRICAL FEES: 'PV System (up to 50 modules) $250.00'; 'PV System (51 to 100 modules) $360.00'; 'PV System (each block of 100, or portion thereof, over 100) $135.00'; 'Energy Storage System (battery) with PV $115.00'; 'Energy Storage System (battery) without PV $230.00'. Add the 'Issuance fee for all permits $45.00' and the 'Technology Maintenance Fee $25.00 surcharge on each permit processed'. On the SolarAPP+ route add 'Self-certification fee for minor permits $130.00 (SolarAPP+, water heaters, reroofs, and air conditioning units)'. So a typical contractor-installed SolarAPP+ array of up to 50 modules computes as 250 + 130 + 45 + 25 = $450.00 - exactly at, and not above, the Gov. Code 66015 residential cap of $450 for systems up to 15 kW; a Planning Division Plan Check line 'Miscellaneous - Pool / Spa / PV / ... $60.00' exists and would push it over if applied, and a battery adds $115. 82% · adopted fee schedule (Resolution 036-26)
• How is the fee calculated? Tiered by MODULE COUNT, plus flat adders - not valuation, not per kW. The bands are up to 50 modules / 51 to 100 modules / each block of 100 or portion thereof over 100. Batteries are a separate flat adder. This matters because it is one of the few Californian schedules that prices solar by panel count: a 60-module array costs $360 rather than $250 while a 12-module and a 50-module array cost the same. The valuation table elsewhere in the schedule (and the 65%-of-permit-fee plan check) governs general building work, not the PV line; Gov. Code 65850.55 forbids valuation-based fees for solar in any case. 90% · adopted fee schedule
• Is there a separate plan-check fee? Yes in general, but not as a separate line for the banded PV fee. The schedule sets 'Plan Check Fee: 65% of Building Permit Fee' for valuation-based building work, and a Planning Division Plan Check line 'Miscellaneous - Pool / Spa / PV / Retaining Walls / Freestanding Fence and Wall / EV Charging Station / Trash Enclosure / State Exempt ADU and JADU $60.00'. On the SolarAPP+ route there is no plan check at all - the City charges the $130 self-certification fee instead. Additional plan review at 4th submittal or revisions is charged at minimum 1 hour at the fully burdened rate, and expedited plan check, where available, is the normal plan fee plus 50%. 80% · adopted fee schedule

Interconnection is a separate process from the permit and usually the longer pole. Where the utility does not depend on the permit being issued, running both at once is the single biggest saving available on a residential job.

• What is the stated plan-review turnaround? Two very different answers. SOLARAPP+: instant - the City advertises 'OBTAIN PERMIT IN 30 MINUTES' and 'instantaneous permit issuance once you've completed the application'. STANDARD PLAN CHECK: 'Time periods vary depending on workloads but a typical plan check submittal will take about three to four weeks' (i.e. roughly 15 to 20 business days), with 'Typically, a recheck takes about one to two weeks.' Separately, PACO invoices initial plan-check fees 'Within 1 to 2 business days' of submittal and review does not begin until that invoice is paid - so the clock effectively starts at payment, not at upload. There is no statutory review deadline for solar in California. 90% · department page FAQ + portal FAQ
• How long is an issued permit valid before it expires? 180 days for the electrical permit; longer and differently framed for the building permit. ECMC 15.24.040: 'If the work authorized by a permit is not commenced within a period of one hundred eighty days, or if construction or work is suspended or abandoned for a period of one hundred eighty days at any time after work has commenced, the permit shall become void.' ECMC 15.04.050 amends CBC Section 105.5 so that a permit for new housing construction becomes invalid if work is not commenced within one year or is suspended or abandoned for one year, with 'The maximum life of any permit is two years. If a final inspection is not obtained within the two-year time period the permit will become invalid and a new permit will be required', and the building official may grant written extensions of not more than 180 days each on justifiable cause. The fee schedule prices a 'Building Permit Extension / Change of Contractor' at $179.00. 92% · municipal code
• Which utility handles interconnection here? San Diego Gas & Electric (SDG&E). El Cajon is wholly inside SDG&E's electric service territory. Interconnection runs under CPUC Electric Rule 21 through SDG&E's Distribution Interconnection Information System (DIIS). SDG&E is an investor-owned utility, so Rule 21 genuinely applies (unlike a municipal utility). Generation supply may come from a community choice aggregator, but that has no bearing on permitting or interconnection. 95% · city department page + utility page
• Where does the utility sit in the sequence? Before, then after - it brackets the permit. SDG&E's own Contractor Interconnection Process guide sets the order: Step 2 the contractor completes a DIIS interconnection application; Step 3 SDG&E reviews and initiates technical reviews; Step 5 'Once the application passes initial technical reviews, an email is sent to the customer and contractor to inform them that they can begin installation'; Step 6 'After the installation is complete, the contractor schedules an inspection with the Authority Having Jurisdiction (city or county)'; Step 7 'After passing the inspection by the Authority Having Jurisdiction (AHJ), the AHJ transmits the release to SDG&E'; Steps 8-10 SDG&E inspection (2-3 weeks) or final review, then the Permission to Operate email. SDG&E states online applications are processed within 30 days of receipt, averaging under five business days. 92% · utility interconnection process guide

The NEC edition a jurisdiction enforces is often a cycle behind the newest one published, and local amendments sit on top of it. Rapid shutdown, conductor sizing and labelling all change between editions, so the edition in force is the first thing to establish, not the last.

• Which NEC edition is in force? 2023 NEC, as the 2025 California Electrical Code. ECMC 15.20.010: 'The California Electrical Code, 2025 Edition, as published by ... the International Code Council, is adopted as the electrical code of the city (the electrical code), except as hereinafter modified, amended or set out herein.' El Cajon is CURRENT - it is not one of the jurisdictions still publishing the 2022 cycle in its ordinance. The Building Safety landing page reinforces it: 'Beginning on January 1, 2026, the El Cajon Community Development Department will follow State law and enforce the 2025 Edition of California Building Standards Codes.' 95% · adopting ordinance + department page
• Which building code edition is in force? 2025 California Building Code (ECMC 15.04.010) and 2025 California Residential Code (ECMC 15.54.010), both adopted by reference. Also adopted at the 2025 edition: California Mechanical Code (15.48.010), California Plumbing Code (15.52.010), California Green Building Standards Code (15.60.010), California Existing Building Code (15.84.010) and California Historical Building Code (15.88.010). The whole of Title 15 is on the current cycle - no stale edition in the ordinance. 95% · adopting ordinance
• Which fire code edition is in force? 2025 California Fire Code (ECMC 15.56.010) - AND, worth flagging for an inland East County city, the 2025 California WILDLAND-URBAN INTERFACE CODE, adopted whole at ECMC 15.57.010. El Cajon also designates Very High Fire Hazard Severity Zones in Local Responsibility Areas at ECMC 15.86.010 and publishes Fire Hazard Severity Zone maps. So the extra environmental layer here is fire, not coast. 93% · adopting ordinance
• Are there local amendments to any of the above? Yes - there are local amendments, but NONE of them touch solar, PV, energy storage or PV placards. The amendments are: to the CBC - 15.04.040 (105.2 work exempt from permits), 15.04.050 (105.5 expiration), 15.04.055 (109.6 refunds), 15.04.060 (113.1 board of appeals, 113.3 deleted), 15.04.065 (202 definitions, new construction), 15.04.070 (501.2 address identification), 15.04.080 (adds 1505.1.3 wood shake or shingle roofs prohibited), 15.04.090 (adds 3202.5 special provisions for SP 182), 15.04.100 (adds 3303.8 construction safeguards and dust control), 15.04.105 (adds Appendix Q emergency housing), 15.04.107 (Appendix I patio cover); to the CRC - 15.54.020 (R112.1 amended, R112.3 deleted), 15.54.030 (Table R301.2 climatic and geographic design criteria), 15.54.040 (R902.2 fire-retardant-treated shingles and shakes prohibited); to the CFC - 15.56.020 through 15.56.130, covering title, schedule of fees, 105.3.1 expiration, 112 board of appeals, 202 definitions, 503.2.1 fire apparatus road dimensions, added 503.2.2 fire lane designation, 505.1 premises identification, and four aboveground-tank and LPG limitation sections. Nothing amends CFC Chapter 12 (Energy Systems, where solar sits at 1205 in the 2025 edition), nothing amends CRC R329 or R330, and nothing amends the CEC - Chapter 15.20 carries only administrative sections (duties of the building official, authority, interpretation, liability, appeals, fees). Also relevant: AB 130 (Stats. 2025, Ch. 22) bars a city from adopting MORE-RESTRICTIVE residential standards between 1 October 2025 and 1 June 2031. 90% · adopting ordinance
• What is the installation judged against? The 2025 CEC (2023 NEC) as adopted with no local amendment - Articles 690 and 705 in particular - PLUS the City's own three-page handout 'Installation Standards for Photovoltaic Systems' (Building and Fire Safety Division), which restates CFC Chapter 12 and CEC 690.12, 690.13(B), 690.31(E)(3), 690.31(E)(4) and 690.56 with El Cajon's own gloss on several of them, and cites the SAN DIEGO AREA ELECTRICAL NEWSLETTER 2020 as the authority for its 690.56 plaque rule. Add the Expedited Photovoltaic Application's Step 8 general notes, which the form states 'are required and are considered a part of this plan and approval': all PV panels listed and labelled to UL 1703; installation per plan and per all manufacturer installation instructions; string amperage at the inverter not to exceed the inverter short circuit input rating; system configured for 'Listed Rapid Shutdown' per CEC 690.12; for service upgrades the utility approved service order provided to the inspector at the time of inspection; and 'Any deviations from the information provided on this form will render your permit null and void.' The handout is stamped 'Revised 1/2020' (though the file was re-saved 14 April 2026) and still cites CFC 1204.x, which the 2025 CFC renumbered to 1205 - the substance survives the renumbering but the citations are dead. 90% · department installation-standards handout + published application form

Ridge setbacks and roof access pathways are fire-service requirements and they constrain the array layout. They are the most common cause of a redesign after the fire department comments on a plan set.

• What ridge setback and access pathways are required? As published by the City (Installation Standards handout, restating CFC Chapter 12; note the 2025 CFC has renumbered these from 1204 to 1205). RESIDENTIAL (R-3): a minimum of two 3-foot-wide pathways on separate roof planes from lowest edge to ridge on all buildings, at least one on the street or driveway side; each roof plane with a PV array gets at least one 3-foot-wide pathway from lowest edge to ridge on the same plane, an adjacent plane, or straddling both. RIDGE SETBACKS: for arrays occupying 33 percent or less of the plan-view total roof area, a minimum 18-inch setback on BOTH sides of the ridge; over 33 percent, a 3-foot setback on both sides. WITH SPRINKLERS: 66 percent or less, 18 inches both sides; over 66 percent, 3 feet both sides. Panels/modules shall not be placed below emergency escape and rescue openings such as windows, and a 3-foot path shall be provided to the escape and rescue opening. EXCEPTION: the access and pathway requirements do not apply to roofs with slopes of 2:12 or less, and roof access, pathways and spacing need not be provided where the fire code official has determined rooftop operations will not be employed. Detached non-habitable Group U structures (detached garages serving R-3, parking shade structures, carports, solar trellises and similar) are excepted from the chapter. NON-RESIDENTIAL: 6-foot clear perimeter (4-foot where either building axis is 250 feet or less), interior pathways at no greater than 150-foot intervals, a 4-foot straight-line path to standpipes or ventilation hatches, 4 feet around roof access hatches with at least one 4-foot path clear to a parapet or roof edge, and the smoke-ventilation options (4-foot pathway bordering all sides of non-gravity smoke and heat vents; between array sections either a pathway 8 feet or greater, or 4 feet on at least one side of gravity-operated dropout vents, or a 4-foot pathway bordering 4 ft x 8 ft venting cutouts every 20 ft on alternating sides). The City's Expedited PV Application repeats the field version on its Step 6 example: '18 inch fire access clearance required at ridge and 3 ft along roof edges', '18 inch fire access clearance required at both sides of valleys', 'No panels allowed over roof vents.' 90% · department installation-standards handout

Which rapid-shutdown rule applies follows directly from the NEC edition in force, and the initiation device has to be at a location the fire service can reach and identify. This is inspected, and it is labelled.

• Is rapid shutdown required, and to which NEC edition? Yes - to the 2023 NEC as the 2025 CEC. ECMC 15.20.010 adopts the 2025 CEC with no technical amendment, so NEC 690.12 module-level rapid shutdown applies in full. The City's own documents require it twice over: the Installation Standards handout restates '690.12 Rapid Shutdown of PV Systems on Buildings. PV system circuits installed on or in buildings shall include a rapid shutdown function to reduce shack hazard for emergency responders in accordance with 690.12(A) through (D)' (the 'shack' is a typographical error for 'shock' in the City's document), and the Expedited PV Application requires a rapid-shutdown specification sheet at Step 1, notes at Step 3 that 'System shall be configured for Listed Rapid Shutdown as per CEC 690.12', and repeats it as general note 4 at Step 8. The label 'PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN' is one of the minimum labels that must be installed for final inspection. 92% · adopting ordinance + department handout + published application form

The NEC sets a baseline for permanent markings at the service equipment and the disconnecting means. On top of that, an authority may specify its own wording, and the utility may specify more again. Where any of them writes its own text, a generic off-the-shelf label set will not pass — this is the detail most often fixed on a return visit.

• Which placards does this authority require at the service equipment? Six placard families at or near the service equipment, and they come from the CITY's own documents rather than from the NEC alone. From the Expedited Photovoltaic Application, Step 7, 'The following minimum labels must be installed for final inspection': (1) at the PV breaker location - 'PHOTOVOLTAIC AC DISCONNECT' and 'DO NOT RELOCATE THIS OVERCURRENT DEVICE'; (2) at junction boxes and on conduit at 10-foot intervals - 'WARNING: PHOTOVOLTAIC POWER SOURCE'; (3) at the inverter - a rating placard with fields for MAXIMUM POWER-POINT CURRENT (Imp) A, MAXIMUM POWER-POINT VOLTAGE (Vmp) V, MAXIMUM SYSTEM VOLTAGE (Voc) V and SHORT-CIRCUIT CURRENT (Isc) A; (4) at the electrical service - the CAUTION site-plan placard (see q40 and q41); (5) at the panel - 'UTILITY INTERACTIVE POWER FLOWING THROUGH THIS PANEL: RATED AC OUTPUT CURRENT ___ A MAX; NOMINAL AC OPERATING VOLTAGE ___ VAC'; (6) 'PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN'. The Installation Standards handout adds the 690.13(B) 'PV SYSTEM DISCONNECT' marking on each PV system disconnecting means and the 690.56 plaque. On top of all of that sit SDG&E's two utility plaques (q42). 92% · published application form (label artwork) + department handout
• Does the authority specify placard wording of its own? Yes. El Cajon prints the exact wording of its required labels as artwork in the Expedited Photovoltaic Application, and its Installation Standards handout dictates wording of its own for the DC circuit marking and the power-source plaque. The wordings it specifies: 'PHOTOVOLTAIC AC DISCONNECT'; 'DO NOT RELOCATE THIS OVERCURRENT DEVICE'; 'WARNING: PHOTOVOLTAIC POWER SOURCE'; 'PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN'; 'UTILITY INTERACTIVE POWER FLOWING THROUGH THIS PANEL: RATED AC OUTPUT CURRENT ___ A MAX / NOMINAL AC OPERATING VOLTAGE ___ VAC'; 'CAUTION' over 'POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING SOURCES WITH DISCONNECTS LOCATED AS SHOWN:'; 'WARNING! INVERTER OUTPUT CONNECTION. DO NOT RELOCATE THIS OVERCURRENT DEVICE.' (the long form, in the Installation Standards handout, 'or equivalent marking'); and 'PV SYSTEM DISCONNECT' per 690.13(B). Some of these track NEC wording, but 'PHOTOVOLTAIC AC DISCONNECT' and the full 'WARNING! INVERTER OUTPUT CONNECTION' block are the City's own formulations rather than verbatim code text. 90% · published application form (label artwork) + department handout
• Does it specify letter height, colour or material? YES - and this is the answer no NEC section carries. El Cajon specifies COLOUR, LETTER HEIGHT, REFLECTIVITY and FASTENING. (a) COLOUR: every label in the City's Step 7 artwork is WHITE LETTERING ON A RED FIELD - the CAUTION site placard, the PV AC disconnect label, the DO NOT RELOCATE label, the WARNING: PHOTOVOLTAIC POWER SOURCE label, the inverter rating placard, the utility-interactive panel placard and the rapid-shutdown placard are all rendered red with white text. (b) DC CIRCUIT MARKING, spelled out in words in the Installation Standards handout at 690.31(E)(4): 'Labels or markings shall be visible, REFLECTIVE capitalized WHITE ON RED minimum 3/8 inch in height. PV system dc circuit labels shall be placed not more than every 10 feet and shall appear on every section of the wiring system separated by enclosures, walls, partitions, ceilings, or floors. Labels shall be suitable for the environment they are installed.' The word REFLECTIVE is El Cajon's own addition - it is not in NEC 690.31(E)(4). (c) LETTER HEIGHT ON THE SITE PLACARD, dimensioned on the City's own drawing: '3/4 inch TEXT' for the word CAUTION and '1/4 inch TEXT' for the line 'POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING SOURCES WITH DISCONNECTS LOCATED AS SHOWN:'. (d) FASTENING: the same drawing calls out 'PERMANENT RIVOT (TYP)' (the City's spelling of rivet) at all four corners of the site placard and at the corners of the utility-interactive panel placard - i.e. a permanently riveted plate, not an adhesive label. (e) The 690.56 plaque 'shall be attached to the exterior of the enclosure by a permanent means acceptable to the AHJ'. 90% · department installation-standards handout + published application form (dimensioned label artwork)
• Is a site plan / facility map placard required, and what must it show? Yes, and El Cajon draws it. The Expedited Photovoltaic Application, Step 7 item 4, requires a placard 'At the electrical service (Example only, replace with actual roof layout) (Contractor to fill in appropriate information)', and the example is a red plate carrying: 'CAUTION' in 3/4 inch text; 'POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING SOURCES WITH DISCONNECTS LOCATED AS SHOWN:' in 1/4 inch text; and beneath that a SITE PLAN OF THE ACTUAL PROPERTY showing the building footprint and roof, the property lines, the fronting street named, and leader-line callouts for 'SERVICE POINT UTILITY METERING' with the meter rating spelled out (the example reads 200A METER 120/240V 1PH 3W), 'INVERTER AND AC DISCONNECT LOCATION', 'SOLAR ARRAY ON ROOF', and a north arrow. It is fastened with permanent rivets at the corners. Separately the Installation Standards handout states the requirement in words at 690.56: 'A plaque identifying the location of all customer self-generation equipment, the service point and DC disconnects must be installed on the enclosure for the service disconnect AND AT EACH SOURCE DISCONNECT LOCATION. The plaque shall be attached to the exterior of the enclosure by a permanent means acceptable to the AHJ. (San Diego Area Electrical Newsletter 2020)'. 90% · published application form (dimensioned label artwork) + department handout
• Does the UTILITY specify placards beyond the AHJ's? Yes, and SDG&E's spec is more prescriptive than El Cajon's - and one number in it has CHANGED, which matters because the wrong figure is widely repeated. CONFIRMED FROM SDG&E'S OWN CURRENT DOCUMENTS, IN THIS RUN. (1) THE SITE PLACARD IS MANDATORY: SDG&E Electric Service Standards and Guides sheet SG806.2 note II, 'A SITE PLACARD IS REQUIRED AT THE SERVICE AND METERING EQUIPMENT', with reference (a) at SG806.5, 'FOR SITE PLACARD REQUIREMENTS, SEE SG017.' SG806 is 'DISTRIBUTED GENERATION', latest revision E, 11 December 2025. (2) THE SPEC ITSELF, SG017 'PLAQUE SPECIFICATIONS AND EXAMPLES', latest revision B, 26 February 2025, four sheets. SG017.4 notes: 'I. THE PLAQUE OR DIRECTORY REQUIRED BY SECTION 230.2 OF THE NATIONAL ELECTRICAL CODE SHALL BE MANUFACTURED IN METAL OR PLASTIC WITH ENGRAVED OR MACHINE-PRINTED LETTERING, OR ELECTRO-PHOTO-PLATING, IN A CONTRASTING COLOR. II THE PLAQUE SHALL INCLUDE A FOOTPRINT OF THE ENTIRE BUILDING. III. THE PLAQUE SHALL BE ATTACHED TO THE SERVICE DISCONNECTING MEANS SECURELY BY A MEANS ACCEPTABLE TO THE GOVERNMENTAL AUTHORITY HAVING JURISDICTION (AHJ). IV. EPOXY IS NO LONGER AN ACCEPTABLE METHOD OF SECURING. V THE PLAQUE SHALL INCLUDE A FOOTPRINT OF THE ENTIRE BUILDING WITH THE AREA SERVED BY EACH SERVICE CLEARLY DELINEATED.' (3) LETTER HEIGHTS - THE CORRECTION. Figure 1 of SG017.1, 'SAMPLE PLAQUE FOR ELECTRICAL EQUIPMENT LABELS', dimensions four tiers: 3/4 inch MIN. for the heading, 1/4 inch MIN. for the second line, and 3/16 inch MIN. for the callouts and again 3/16 inch MIN. for the building-diagram labels - with the 3/16 inch values HIGHLIGHTED as the latest revision. The tiered 3/4 / 1/4 / 1/8 inch figure that circulates in this trade comes from the older 'Sample Utility Caution Placards for Generation' PDF (internal dates: created 21 August 2009, last modified 21 May 2018), which is STILL LINKED TODAY from SDG&E's Solar and Battery Installation Center and does show 3/4 inch MIN., 1/4 inch MIN. and 1/8 inch MIN. on its CAUTION drawing. So SDG&E currently publishes two documents with different smallest-text minima - 1/8 inch on the 2018 sample sheet, 3/16 inch in the 2025 Service Standards - and the Service Standards is the governing one. Cut to 3/16 inch and you satisfy both. (4) THAT 2018 SAMPLE SHEET also specifies, in words: 'The plaque shall be metal or plastic, with engraved or machined printed letters in a contrasting color to the plaque, shall include the location of the service point, utility meter, AC and DC disconnects, inverter, PV Array, Generator or other types of generation sources, and a footprint of the entire building and site. The plaque shall be attached to the exterior of the enclosure for the service disconnect in a manner that is required by the Authority Having Jurisdiction. Attachment methods must be made watertight and the integrity of the enclosure rating must be maintained.' Its drawing carries the callouts SERVICE POINT & UTILITY METERING, PV SYSTEM DISCONNECT FOR UTILITY OPERATION, STATIONARY ENGINE GENERATOR, STORAGE BATTERIES IN GARAGE/ROOM 123, SOLAR PHOTOVOLTAIC ARRAY ON ROOF, INVERTER LOCATION TO BE IDENTIFIED, and WIND TURBINE OR SOLAR PHOTOVOLTAIC ARRAY REMOTE LOCATION PER ZONING REQUIREMENTS. (5) THE SECOND PLAQUE - AC DISCONNECT. SG806.3 note IV: 'CUSTOMER SHALL INSTALL A PLACARD ON THE AC DISCONNECT SWITCH LABELED PV SYSTEM DISCONNECT FOR UTILITY OPERATION OR WIND TURBINE, FUEL CELL, BATTERY, ETC., SYSTEM DISCONNECT FOR UTILITY OPERATION, AS APPROPRIATE. THE AC DISCONNECT SHALL BE IDENTIFIED THE SAME ON THE SITE PLACARD.' SG806.5 note XI(d): 'CUSTOMERS SHALL INSTALL PLAQUES AT ALL UTILITY AC DISCONNECTS CLEARLY STATING *TECHNOLOGY (EX: PV BESS ETC)* DISCONNECT FOR UTILITY OPERATION'. The 2018 sample sheet dimensions that plaque at 3/8 inch LETTERS, on the FACE of the utility AC disconnect, one per disconnect where multiple are installed, 'METAL OR PLASTIC, WITH ENGRAVED OR MACHINE PRINTED LETTERS, OR ELECTRO-PHOTO PLATING, IN A CONTRASTING COLER TO THE PLAQUE' (SDG&E's typographical error for COLOR). (6) OPERATIONAL TEETH: SDG&E's Fast Track process for systems under 30 kW on service panels rated below 400 A asks for 'a single frame photo showing the SDG&E electric meter and safety Caution placard (attached to the service panel)' uploaded with the interconnection application - so on a residential job with no AC disconnect the site Caution placard is still required and is photographed. NOTE FOR THE INSTALLER: SDG&E says contrasting colour; El Cajon draws white on red. White on red satisfies both. 93% · utility service standards manual (SG017, SG806) + utility placard sample sheet
• Where must the labels be placed? Where each label goes. CITY-SIDE: the CAUTION site-plan placard on the exterior of the service disconnect enclosure - and El Cajon extends this beyond the NEC, because its 690.56 restatement requires the plaque 'on the enclosure for the service disconnect AND AT EACH SOURCE DISCONNECT LOCATION'. 'PHOTOVOLTAIC AC DISCONNECT' and 'DO NOT RELOCATE THIS OVERCURRENT DEVICE' at the PV breaker location. 'WARNING: PHOTOVOLTAIC POWER SOURCE' at junction boxes and on conduit at 10-FOOT INTERVALS, and per the handout's 690.31(E)(4) restatement 'not more than every 10 feet and ... on every section of the wiring system separated by enclosures, walls, partitions, ceilings, or floors'. The rating placard at the inverter. The utility-interactive placard on the distribution panel that was de-rated. The rapid-shutdown placard at the service disconnecting means. 'PV SYSTEM DISCONNECT' on each PV system disconnecting means per 690.13(B). UTILITY-SIDE: SDG&E's site placard at the service and metering equipment, attached to the service disconnecting means securely by a means acceptable to the AHJ - not with epoxy; and SDG&E's disconnect plaque on the FACE of the utility AC disconnect, one per disconnect, identified identically on the site placard. 90% · department installation-standards handout + published application form + utility service standards

Where the AC disconnect must sit relative to the meter is usually the utility's rule, not the building department's. Battery storage frequently carries its own permit, its own inspection and its own fire conditions.

• Where must the AC disconnect be, relative to the meter? There is NO ten-foot rule - and this run adds a further correction. Nothing in El Cajon's ordinance, its Photovoltaic page, its Installation Standards handout, its Expedited Photovoltaic Application or its Residential Electric Meter Installation standard states any distance between the AC disconnect and the meter. What SDG&E's CURRENT Electric Service Standards and Guides actually says, at SG806.4 note VIII(a): 'CUSTOMERS INSTALLING INVERTER-BASED SYSTEMS LESS THAN 30KW CEC AC WILL NO LONGER BE REQUIRED TO INCLUDE AN AC DISCONNECT SWITCH WHEN THE FACILITY HAS A SELF-CONTAINED BILLING METER (I.E., 0-225A SOCKET-BASED METER OR A 400A CLASS 320 SOCKET-BASED METER).' Note the bracket: 0-225 A socket-based, or 400 A Class 320 - if you are carrying '0-320 A socket-based or 400 A K-based' from an older source, that is not what the current manual says. SG806.2 note III adds 'A DISCONNECT SWITCH IS HIGHLY RECOMMENDED BUT NOT REQUIRED', and SG806.4 note VIII(b) explains why it can be omitted: 'IN LIEU OF AN AC DISCONNECT, THE BILLING METER MAY TEMPORARILY BE REMOVED BY SDG&E TO ISOLATE THE CUSTOMER'S INVERTER'. A disconnect IS required (SG806.4 note IX) for inverter-based systems 30 kW CEC AC and larger, for any interconnection on a CT-rated meter, and for all non-inverter-based generators. WHERE ONE IS INSTALLED, SG806.4 note XI(a) governs location and it is a location rule, not a distance rule: 'A SINGLE, VISIBLE OPEN, LOCKABLE AC DISCONNECT MUST BE INSTALLED AT THE POINT OF COMMON COUPLING (PCC), ALSO REFERRED TO AS THE SERVICE AND METERING EQUIPMENT, AT A LOCATION APPROVED BY SDG&E' - acceptable locations being inside the electric meter room, or immediately outside it at a location approved by SDG&E and the AHJ. It must be readily accessible under all conditions 24 hours a day; locked doors and gates SDG&E's employees must pass through must use the SDG&E restricted Schlage Primus VHLK keyway; the disconnect is service equipment and needs a 3 ft x 3 ft clear and level poured-in-place concrete housekeeping pad at final grade; it must have an open air-gap with visible verification, with a viewing window required at 277/480 V and above and for disconnects built into switchgear (exception: wall or rack mounted knifeblade disconnects up to and including 800 A and under 480 V); and it must be lockable in the open position with a single SDG&E padlock, with the panel cover not removable while padlocked open. 90% · utility service standards manual (SG806)
• Must equipment be on a specific approved list? Yes - El Cajon publishes its own accepted-laboratory list. The Building and Fire Safety Division's handout 'Nationally Recognized Testing Laboratories and Field Evaluation Companies' names the NRTLs and field-evaluation companies 'that are acceptable to the City of El Cajon and have been recognized by OSHA in accordance with 29 CFR 1910.7', and leaves a door open: 'Other companies may be acceptable based on qualifications as presented to the Building and Fire Safety Division.' The list includes CSA, Curtis-Straus, NSF International, QPS Evaluation Services and others across two pages. Product-specific: the Expedited PV Application general note 1 requires that 'All photovoltaic panels shall be listed and labeled in accordance with U.L. 1703', and ECMC 15.92.030(C) requires solar electric systems to meet the standards of the California Electrical Code, the IEEE and accredited testing laboratories such as Underwriters Laboratories. There is no El Cajon-specific approved-equipment list of makes and models. 88% · department published list + published application form + municipal code
• Are batteries permitted, and under what conditions? Yes, and since January 2026 batteries have driven the ROUTE rather than merely being allowed on it. The City's Photovoltaic page opens with '**UPDATE! All Solar PV with battery reviews must be processed using SolarAPP+!**' and adds 'Adding ESS (Battery Energy Storage Systems) are now eligible thru Solar APP+ (NEW 1/2026)'. So a PV-plus-battery job in El Cajon is now REQUIRED to go through SolarAPP+, not merely permitted to. Code side: ECMC 15.92 covers 'advanced energy storage systems' alongside solar, defining advanced energy storage by reference to Public Utilities Code section 2835 and limiting it to 'Electrochemical energy storage in non-venting packages' and 'Customer sited installations'; ECMC 15.92.035 requires certification by an accredited listing agency as defined by the California Electrical Code and compliance with the CEC, IEEE and accredited testing laboratory standards; ECMC 15.92.050(F) requires final approval 'with the fewest inspections possible'. Substantively the 2025 CFC (ECMC 15.56.010) and 2025 CRC (ECMC 15.54.010) govern - ESS moved to CRC R330 in the 2025 cycle - and El Cajon amends neither on this point. 88% · department permit page + municipal code
• Is there a separate ESS permit or inspection? No separate PERMIT, but a separate FEE and a separate inspection outcome. The adopted fee schedule charges 'Energy Storage System (battery) with PV $115.00' and 'Energy Storage System (battery) without PV $230.00' - the with-PV price is half, which is what you would expect of an adder to an existing solar permit rather than a stand-alone permit. ECMC 15.92 treats advanced energy storage as one of three streamlined categories on the same permit path as solar, and 15.92.050(F) requires 'final approval ... with the fewest inspections possible to ascertain the safety and code compliance of the system' for ESS - note this is phrased differently from the 'one consolidated building inspection' guaranteed to small residential rooftop solar in the same subsection, so an ESS is not promised a single inspection the way solar is. 80% · adopted fee schedule + municipal code
• Is a ground mount treated as a structure? Not eligible for the fast route, and treated as a site structure with a brush-clearance rule. Ground mounts fall outside both fast paths: the Expedited Photovoltaic Application criterion 2 requires 'System is roof mounted residential limited to two stories', and ECMC 15.92.010 defines a small residential rooftop solar energy system as one 'installed on ... a single or duplex family dwelling'. So a ground mount goes to standard plan check with a plot plan. Substantively the City's Installation Standards handout carries CFC 1204.4 (renumbered 1205.4 in the 2025 CFC): 'Ground-mounted photovoltaic panel systems shall comply with Section 1204.1 and this section. Setback requirements shall not apply to ground-mounted, free-standing photovoltaic arrays. A clear, BRUSH-FREE AREA OF 10 FEET shall be required for ground mounted photovoltaic arrays.' The 10-foot brush-free clearance is the operative local number, and it matters more here than in a coastal city: El Cajon adopts the 2025 California Wildland-Urban Interface Code at ECMC 15.57.010 and designates Very High Fire Hazard Severity Zones at ECMC 15.86.010. 80% · department installation-standards handout + published application form + municipal code
• Is there a local rule on service upgrades or busbar sizing? Yes - El Cajon publishes a busbar table and a breaker-position rule. The Expedited Photovoltaic Application, Step 4, prints 'Maximum Supply (over current protection device) Based on Bus Bar Rating (Amps)' with paired rows: busbar 100 / main 100 / max combined PV 20; 125/100/50; 125/125/25; 150/150/30; 200/150/60*; 200/175/60*; 200/200/40; 225/175/60*; 225/200/60; 225/225/45 - with the footnote 'This Value has been lowered to 60 amp from the calculated value to reflect 10 kw AC size Maximum.' The Installation Standards handout adds: 'Panel bus ratings may be exceeded by the position of the inverter disconnect breaker. PV breaker shall be at the opposite end of the utility supply but when the bus is center fed, the breakers shall comply with section 705.12 or a panel upgrade may be required. A permanent warning label shall be applied to the distribution equipment with the following or equivalent marking: WARNING! INVERTER OUTPUT CONNECTION. DO NOT RELOCATE THIS OVERCURRENT DEVICE.' On service upgrades: the Building Permits page requires that 'New meters or meter upgrades will need documentation of approved location from SDG&E', Step 4 of the PV form has a tick-box for 'An electrical service upgrade to ___ Amps is included as a part of this permit, SDG&E Planner Sheet must be provided', and the City publishes a one-page 'Residential Electric Meter Installation' standard covering service head clearances, flashing on all roof penetrations, riser size and attachment (1-1/4 in max 30 in above roof, 1-1/2 in max 40 in above roof, secured with 3/8 x 3 in lag or 1/4 in toggle bolts), service entrance conductor sizes (#4 Cu for 100 A, #1 Cu for 150 A, 2/0 Cu for 200 A), neutral sizing, grounding electrode (ufer, or two driven copper rods 5/8 in by 8 ft, minimum 6 ft apart) and the water pipe bond. 90% · published application form + department handouts
• Is a specific mounting system or attachment spacing required? No proprietary mounting system and no attachment spacing is mandated, but El Cajon does impose grounding-hardware conditions that a standard kit can fail. From the Installation Standards handout: 'GROUNDING: All exposed non-current carrying metal parts shall be grounded with listed hardware compatible with panels, racks and other equipment as approved by the equipment manufacturer and installed per the instillation instructions. Documentation shall be provided to the field inspector showing that grounding hardware is approved for the application for which it is used. WEEB clips shall not be used unless the panel manufacturer's cut sheets and the racking system cut sheets indicate WEEB clips are approved.' Also: 'Grounding and bonding per CEC Article 250, 2 ground rods and a water bond or equivalent', and 'An ADDITIONAL GROUND ROD is required per section 250.53(A)(2) unless an exception applies.' The Expedited PV Application requires the racking system / roof attachment system specification sheet at Step 1, and the Residential Electric Meter Installation standard requires flashing on all roof penetrations. 88% · department installation-standards handout

Booking is a portal, a phone call or an email depending on the authority, and the notice required is rarely zero. Book before the work is finished rather than after — the lead time, not the work, is usually what sets the date.

• How is an inspection booked? Portal - PACO. The City's 'Sign Up For... A Building or Fire Inspection' and 'Request an Inspection' links both resolve to the PACO self-service portal at elcajonca-energovpub.tylerhost.net/Apps/SelfService, and the Project Assistance Center page states applicants use PACO to 'submit for certain types of projects, pay for permits, SCHEDULE INSPECTIONS, and get status updates'. On the SolarAPP+ route the request is specifically for a FINAL REVIEW, made after uploading the completed third party inspection declaration to the ATTACHMENTS tab. Phone remains available through Building Safety on 619-441-1726. 90% · department page + portal
• Are same-day or AM/PM windows offered? The City publishes a DAILY INSPECTION LIST rather than a booking-window policy. Both the Building Safety landing page and the Building Permits page carry the link 'View daily inspection times, results and corrections HERE', which points to PACO under the title 'Today's Inspections' - so an assigned time, the result and any corrections are visible to the public on the day. Counter and phone hours are Monday to Thursday 07:30 to 17:00 with alternate Fridays 08:00 to 17:00, a 9/80 schedule that closes the department every other Friday and is worth planning around. The fee schedule prices out-of-hours work: inspections outside normal business hours cost a minimum of 1 hour at 1.5 times the fully burdened hourly rate if an extension of the workday, or a minimum of 4 hours at 1.5 times if not an extension of the workday or on a weekend. 78% · department page + adopted fee schedule

Some authorities inspect their own solar work; some delegate it, and a few do not inspect the PV equipment itself at all. Who is coming determines what they will look at.

• Does this AHJ perform its own final solar inspection? DELEGATED on the SolarAPP+ route - this is the most consequential El Cajon-specific fact in this record, and it is unusual for a California city. The Photovoltaic page instructs: 'Please complete the third party inspection declaration on the permit and upload to PACO using the ATTACHMENTS tab, and request a Final Review in order to obtain a release of solar to SDG&E. NO OTHER CITY INSPECTIONS WILL BE REQUIRED.' So for a contractor-installed SolarAPP+ array - which since January 2026 includes every PV-with-battery job - the City does NOT send an inspector; it accepts a third-party inspection declaration and performs a documentary Final Review. On the standard plan-check route (owner-builders, and anything outside SolarAPP+ eligibility) the City inspects in the ordinary way, and ECMC 15.92.050(F) guarantees 'one consolidated building inspection' for a small residential rooftop solar energy system, with re-inspections required if it fails. 88% · department permit page
• If delegated, to whom? To a third-party inspector engaged by the permit holder, evidenced by a 'third party inspection declaration' completed on the permit and uploaded to PACO under the ATTACHMENTS tab. The City names no firm, no panel and no approved list for this. Two adjacent City documents suggest where the qualification bar may sit but neither is stated to apply to solar: the Building Safety forms library publishes a 'Special Inspection Agencies' list and a 'Special Inspection Program' handout, and the City separately publishes its list of accepted Nationally Recognized Testing Laboratories and Field Evaluation Companies. On the standard route nothing is delegated - the City's own inspectors attend. 70% · department permit page

A rough-in or mid-roof inspection, where one is required, has to happen before the work it covers is closed up. Missing a stage means opening something back up, and it is the most expensive kind of correction.

• Which inspections are required, and in what order? SOLARAPP+ ROUTE: one step, and it is documentary. Upload the completed third party inspection declaration to PACO, request a FINAL REVIEW, and on approval the City issues the release of solar to SDG&E. 'No other City inspections will be required.' STANDARD ROUTE: ECMC 15.92.050(F) - 'For a small residential rooftop solar energy system ONE CONSOLIDATED BUILDING INSPECTION shall be required, which shall be done in a timely manner. If a small residential rooftop solar energy system fails inspection, re-inspections are required.' For ESS and EV charging, 'final approval shall be granted with the fewest inspections possible'. Where a service upgrade is included, the Expedited PV Application general note 5 adds a document gate at that inspection: 'For service upgrades the utility approved service order must be provided to the inspector at the time of inspection.' Beyond the City, SDG&E's own process may add an inspection of its own after the AHJ release - Step 8 of its Contractor Interconnection Process routes a project either to 'Pending SDG&E inspection' (conducted within 2-3 weeks) or straight to 'Pending final review by SDG&E'. 88% · municipal code + department permit page + utility process guide
• Is a rough-in or mid-roof inspection required? No. ECMC 15.92.050(F) mandates ONE CONSOLIDATED building inspection for a small residential rooftop solar energy system, which forecloses a separate rough-in or mid-roof stage, and on the SolarAPP+ route there is no City site visit at all. The City's general advice on the Building Permits page - 'Do not cover any aspect of construction (underground, wall framing, etc.) until you have obtained a passing inspection' - is the ordinary building-work rule and is not applied to rooftop PV as a mid-roof stage. Where the job includes a service upgrade or a new meter, the SDG&E-approved location documentation and the utility approved service order are the gating items rather than an extra City inspection. 85% · municipal code + department page

The approved plan set, the permit, and the equipment listings should be on site and reachable. Inspectors routinely verify that installed equipment matches what was approved, and that the labels are the ones the plan set promised.

• Is there a published inspection checklist? Yes - two, on two different routes, and ECMC 15.92.040(D) requires it: 'The Building and Fire Safety Division shall maintain a standard plan and checklist of all requirements with which small residential rooftop solar energy systems, electric vehicle charging stations, or advanced energy storage systems shall comply to be eligible for expedited review.' The City discharges that with (a) its own 8-step Expedited Photovoltaic Application, which is a tick-box checklist covering eligibility criteria, specification sheets, calculations, point of connection, wiring diagram, fire clearances, labelling and general notes, and (b) for the SolarAPP+ route, the national SolarAPP+ eligibility checklist to which the City links: 'To see which systems are eligible, please refer to the Eligibility Checklist. Only projects that conform to this list are eligible to use the automated SolarAPP+ portal for instant permitting. All other Solar/PV installations require a regular Building Permit.' What the City does NOT publish is a field-inspection checklist - a list of what the inspector will look at. 85% · municipal code + published application form
• What must be on site at inspection? On the standard route: the issued permit with its inspection sheet ('Required inspections will be listed on the inspection sheet of your permit'); the approved plan, since general note 2 requires installation 'per plan and in accordance with all manufacturer installation instructions' and note 6 warns that 'Any deviations from the information provided on this form will render your permit null and void'; documentation showing the grounding hardware is approved for the application it is used in, plus the panel manufacturer's and racking system cut sheets where WEEB clips are used; and, where the job includes a service upgrade, 'the utility approved service order must be provided to the inspector at the time of inspection'. All the Step 7 labels must be physically installed before the final. On the SolarAPP+ route the equivalent is documentary rather than on site: the completed third party inspection declaration uploaded to PACO's ATTACHMENTS tab, with the SolarAPP+ pre-approval ID already on the permit. 85% · published application form + department handouts + department permit page
• Does the inspector verify labels and listings? Yes - explicitly, and labels are called out as a final-inspection item. The Expedited Photovoltaic Application heads Step 7 'Labeling' with: 'The following minimum labels must be installed for final inspection.' The Installation Standards handout requires listing evidence to be produced in the field: 'Documentation shall be provided to the field inspector showing that grounding hardware is approved for the application for which it is used. WEEB clips shall not be used unless the panel manufacturer's cut sheets and the racking system cut sheets indicate WEEB clips are approved.' General note 1 requires panels listed and labelled to UL 1703, and general note 5 requires the utility approved service order at the inspection for service upgrades. Caveat: on the SolarAPP+ route the City is not on site, so this verification passes to the third-party inspector signing the declaration. 85% · published application form + department handout

Passing gives you a final or an equivalent sign-off. That is not the same as permission to operate: PTO comes from the utility, and who tells the utility the inspection passed varies. A system left switched off for weeks is usually waiting on this handover.

• What is issued on pass? Final. On the SolarAPP+ route the operative act is the approval of the requested FINAL REVIEW, which the City describes by its consequence rather than by a certificate: complete the third party inspection declaration and 'request a Final Review IN ORDER TO OBTAIN A RELEASE OF SOLAR TO SDG&E'. On the standard route it is the passing of the one consolidated building inspection under ECMC 15.92.050(F). No certificate of occupancy is involved - a rooftop array on an existing dwelling creates no new occupancy - and the City publishes no green-tag or letter for solar. The City does publish monthly 'Finaled Permits' lists, so the final is a public record. 85% · department permit page + municipal code
• Who notifies the utility for PTO? AHJ - the City transmits the release. SDG&E's own Contractor Interconnection Process guide, Step 7: 'After passing the inspection by the Authority Having Jurisdiction (AHJ), the AHJ transmits the release to SDG&E.' Step 8: 'The release is automatically posted to the interconnection application in DIIS moving it to the next step, which is either A. Pending SDG&E inspection OR B. Pending final review by SDG&E.' Step 9: projects requiring an SDG&E inspection get it within 2-3 weeks. Step 10: 'If the final review is approved, a Permission to Operate (PTO) email is sent to the customer and contractor.' El Cajon's side matches exactly - the installer requests a Final Review 'in order to obtain a release of solar to SDG&E'. So the installer triggers it, the City issues the release, SDG&E grants PTO. 92% · utility interconnection process guide + department permit page
• Is there a re-inspection fee? Not a flat sum - charged at time. Building side: 'Re-inspection fees (normal business hours) - Minimum 1 hour at fully burdened hourly rate.' Out of hours it is a minimum of 1 hour at 1.5 times the fully burdened rate if an extension of the workday, or a minimum of 4 hours at 1.5 times if not an extension or on a weekend. Fire side, where the schedule is explicit and generous: 'The fee for re-inspection shall be zero cost upon 2nd inspection. Upon the 3rd and each subsequent inspection, the fee shall be $155.00.' Planning side: 'Planning Re-Inspection (after two failed final inspections) $110.00 each inspection', plus 'Phased Final Inspection $110.00 each inspection'. Plan-review resubmittals are charged separately: 'Additional plan review at 4th submittal or revisions - Minimum 1 hour at fully burdened rate', and on the fire side 'Plan Review Re-Submittal (3rd and each subsequent time) 50% of original fee'. The fully burdened hourly rate itself is not printed in the schedule, so no dollar figure can be given for a building re-inspection. 85% · adopted fee schedule
• How are corrections issued and cleared? Through PACO, in writing, with redlines. ECMC 15.92.050(E) sets the standard: 'If an application is deemed incomplete or requires corrections to be addressed, a WRITTEN OR EMAILED CORRECTION NOTICE DETAILING ALL DEFICIENCIES in the application and any additional information or documentation required to be eligible for expedited permit issuance shall be sent to the applicant for resubmission.' In practice, per the City: 'Yes, you will be contacted by email when the plan check is complete'; 'You can log in to your account with the Project Assistance Center Online (PACO) and view corrections to your plans on the site'; and from the PACO FAQ, 'you'll receive an e-mail directing you to PACO to see any review corrections, redline plans, or additional invoices. For review corrections and redline plans, please revise and resubmit via PACO the requested documents or plans.' Recheck takes typically one to two weeks. Field corrections are published on the daily inspection list alongside times and results. 90% · municipal code + portal FAQ + department page