PMT17-00307 City of Menifee Permit No.: PMT17-00307
29714 HAUN RD. T Residential Electrical
'5A—CCELA— MENIFEE,CA 92586 yam'
MENIFEE Date Issued: 02/27/2017
PERMIT
Site Address: 27142 STARK ST, MENIFEE, CA 92586 Parcel Number: 335-314-014
Construction Cost: $38,000.00
Existing Use: Proposed Use:
Description of INSTALL ROOF MOUNTED SOLAR SYSTEM, 38 PANELS, 1 INVERTER, 10.07 kW
Work:
Owner Contractor
WILLIAM JACKSON PEAK POWER SOLUTIONS INC
27142 STARK STREET 1542 EDINGER AVENUE SUITE D
MENIFEE,CA 92586 TUSTIN, CA 92780
Applicant Phone:7142583900
HENRY AFFRE License Number:973253
PEAK POWER SOLUTIONS INC
1542 EDINGER AVENUE SUITE D
TUSTIN, CA 92780
Fee Description DIV Amount(51
Solar, Residential or Small Commercial 1 252.00
Building Permit Issuance 1 27.00
Additional Plan Review Electrical 158 157.50
GREEN FEE 1 2.00
SMIP RESIDENTIAL 1 5.00
General Plan Maintenance Fee-Electrical 1 12.60
$456.10
The issuance of this permit shall not prevent the building official from thereafter requiring the correction of errors in the plans and
specifications or from preventing builiding operations being carded on thereunder when in violation of the Building Code or of any other
ordinance of City of Menifee.Except as otherwise stated,a permit for construction under which no work is commenced within six
months after issuance,or where the work commenced is suspended or abandoned for six months,shall expire,and fees paid shall be
forfeited.
CONDITIONS
Condition Comment
1 MPU PERMIT
AA_Bldg_Permit Template.rpt Page 1 of 1
City of Menifee PMT17-00307
2/22/17
EsGil Corporation
In Bartnership with Government for Building Safety
DATE: 2/22/17 ❑ APPLICANT
IRIS.
JURISDICTION: City of Menifee ❑ PLAN REVIEWER
❑ FILE
PLAN CHECK NO.: PMT17-00307 SET: II
PROJECT ADDRESS: 27142 Stark St.
PROJECT NAME: Jackson 8.2KW rooftop PV system
® The plans transmitted herewith have been corrected where necessary and substantially
comply with the jurisdiction's Building codes.
❑ The plans transmitted herewith will substantially comply with the jurisdiction's
codes when minor deficiencies identified below are resolved and checked by building
department staff.
❑ The plans transmitted herewith have significant deficiencies identified on the enclosed
check list and should be corrected and resubmitted for a complete recheck.
❑ The check list transmitted herewith is for your information. The plans are being held at
Esgil Corporation until corrected plans are submitted for recheck.
❑ The applicant's copy of the check list is enclosed for the jurisdiction to forward to the
applicant contact person.
❑ The applicant's copy of the check list has been sent to:
® EsGil Corporation staff did not advise the applicant that the plan check has been
completed.
❑ EsGil Corporation staff did advise the applicant that the plan check has been completed.
Person contacted: Telephone #:
Date contacted: J (bySN Email:
Mail Telephone Fax In Person
❑ REMARKS:
By: Morteza Beheshti Enclosures:
EsGil Corporation
❑ GA ❑ EJ ❑ MB ❑ PC 2/16
structural design 1437 glenneyre street laguna beach ca 92651 ph.(949)497-5203 email: harlar 2001 a aol.com
City of Menifee
Building Dept
Received
JAN 3 1 2017
Jackson Solar Panels
27142 Stark Street
Sun City, Calif.
DESIGN CRITERIA
Based on 2016 California Building Code & 2015 International Building Code
ASCE 7-10
TIMBER (Grade per WWPA Grading Rules, Douglas Fir-Larch)
4X and LESS
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WEIGHT LOADING ANALYSIS
Solar Electric Installation
For William Jackson at 27142 Stark Street, Sun City, CA 92586
Contractor: Peak Power Solutions January 24th, 2017
Roof Information
Roof is sloped composition shingle with standard wood framing.
Wood rafters twenty-four inches on center(trusses), 2"x 4".
Solar panels stanchions are spaced 4' on center for sloped roof areas.
Analysis of dead load weight added to roof by installation of solar array
Trina 265-watt solar module weight 41 pounds
Number of solar modules 38
Total weight of modules 1558 pounds
Weight of racking system 18 pounds
No. of rack sets 24
Total weight of rack sets 432 pounds
Total weight of solar array 1990 pounds
Height of each module 5.4 feet
Width of each module 3.3 feet
Area of one module 17.6 sq. feet
Area of entire solar array 669.4 sq. feet
Weight of existing Comp Shingle per square foot = 3.5 psf.
Weight of solar array per unit area of roof 2.97 lbs.
Total weight of Solar Array with CompShingle psf 6.47 psf
No. of stanchions connected to roof joist rafters 78
Weight loading per stanchion 25.51 pounds/connection
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JACKSON SOLAR PANELS
Solar Attachment Force Per
Components and Cladding Wind Loads (Simplified Method per section 30.5 ASCE 7-10)
Risk Category II (Table 1.5-1)
Basic Wind Speed V= 110 MPH (Figure 26.5-1A)
Exposure Category C (Section 26.7)
Topographic Factor KZt= 1.0 (Figure 26.8-1)
Roof Zone = Zone 2 (Figure 30.5.1)
Wind Pressure Pnet30 = -31.9 PSF (Figure 30.5-1)
Adjustment For Building htk= 1.21 (Figure 30.5-1)
�Pne== (1.21)(31.9) = 38.6 PSF (Equation 30.5-1)
Adjusted Wind Pressure Pnet=
Area of panel = 17.3 ft2 5 panels with 10 connections
Uplift force per connection
= 17.3 (5)(388 61 = 3340
10
Use 5/16" diameter (minimum) lags x 3
Allowable withdrawal = 2664/inch (NDS Table 11.2A) 3 x 266 = 798#/lag > 334#
Use 116" diameter (minimum) x 3" lags 1 lag per panel to existing framing
Existing Roof Dead Load = 15.0 PSF (including ceiling)
Existing Roof Area = 2552 FT2
Existing Roof Total Weight = 38280 LBS.
Total weight of proposed solar array = 669 LBS.
669/38280 = 1.7 < 5% increase neglect seismic impact per 3403.3 C C s4> r
^,:22 n
Solar panel weight = 2.97 PSF
i c?
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Building & Safety Dept.
FEBrgienphase
TECHNICAL BRIEF
_ 15201t EN E R G Y
Received
NEC 2014 — Enphase System Code Compliance
Overview
This technical brief discusses new NEC 2014 requirements that apply to Enphase Microinverter Systems.
It is useful for installers, electricians, and electrical inspectors or authorities having jurisdiction (AHJs)in
understanding how code-compliance is handled where NEC 2014 is adopted. Main topics discussed in
this document are:
• NEC 2014 Section 690.12 Rapid Shutdown of PV Systems on Buildings
• NEC 2014 Section 705.12 Point of Connection
• NEC 2014 Section 690.11 DC Arc-Fault Circuit Protection
n
NEC 2014 Section 690.12 Rapid Shutdown of PV Systems on 0
Buildings U
Enphase Microinverter Systems fully meet the rapid shutdown requirement without the need to install LU
additional electrical equipment. Properly labeling the PV system power source and rapid shutdown ability U
is required per NEC Section 690.56(B)and (C). LL
Solar electric PV systems with Enphase Microinverters have one utility-interactive inverter directly LL
underneath each solar module, converting low voltage DC to utility grid-compliant AC.When the utility
grid is available and the sun is shining,each microinverter verifies that the utility grid is operating within
the IEEE 1547 requirements. Only then does it export AC power into the electric service for use by loads
onsite or export power to the utility grid for others to use. When the utility grid has a failure, or the PV
system AC circuits are disconnected from the utility service via an AC breaker,AC disconnect, or removal
of the solar or main utility service meter,the microinverters stop producing AC power in fewer than six AC
cycles. Enphase Microinverters are not capable of operating as an AC voltage source. This means that
without an AC utility source, Enphase Microinverters are not able to energize connected wiring and no AC
voltage or current can be injected into the inverter output circuits or the grid.
When the AC utility source is removed from the inverter output circuits via any means, such as an AC
breaker, AC disconnect or removal of the solar or main utility service meter, this equipment performs the
rapid shutdown function per 690.12.With an Enphase Microinverter System this shutdown occurs well
within the 690.12 required 10 seconds,and there are no other conductors energized more than 1.5 In (5
ft)in length inside a building or more than 3 m (10 ft)from a PV array.
Code Reference
690.12 Rapid Shutdown of PV Systems on Buildings. PV system circuits installed on or in
buildings shall include a rapid shutdown function that controls specific conductors in accordance 1
with 690.12(1)through (5)as follows.
(1)Requirements for controlled conductors shall apply only to PV system conductors of
more than 1.5 m (5 ft)in length inside a building, or more than 3 m(10 ft)from a PV oo
array.
(2)Controlled conductors shall be limited to not more than 30 volts and 240 volt-amperes
within 10 seconds of rapid shutdown initiation.
(3)Voltage and power shall be measured between any two conductors and between any
conductor and ground.
(4)The rapid shutdown initiation methods shall be labeled in accordance with 690.56(B).
(5) Equipment that performs the rapid shutdown shall be listed and identified.
1 ®2015 Enphase Energy Inc.All rights reserved. M January 201155 h MOP
NEC 2014—Enphase System Code Compliance
NEC 2014 Section 705.12 Point of Connection (AC Arc-Fault
Protection)
In this section we explain how to comply with NEC 2014 Section 705.12 Point of Connection when
installing Enphase Energy Systems with:
• Supply Side Connection
• Load-Side Connection to Single-Phase 1201240 Volt Services
• Three-Phase 208/120 Volt Services
Supply Side Connection
Solution: No AC AFCI (Arc-Fault Circuit Interrupter)protection is required.
Code Reference
705.12 Point of Connection The output of an interconnected electric power source shall be
connected as specified in 705.12(A), (B), (C)or(D).
Since the operator"OR"is used to define connection types,the code seems to intend that if one criteria is
met,for example (A),the other criteria are not applicable.
Code Reference
705.12(A)Supply Side.An electric power production source shall be permitted to be connected
to the supply side of the service disconnecting means as permitted in 230.82(6).The sum of the
ratings of all overcurrent devices connected to power production sources shall not exceed the
rating of the service.
705.12(B) Integrated Electrical Systems. ...
705.12(C)Greater Than 100 kW. ...
705.12(D)Utility-Interactive Inverters. ...
230.82(6)lists solar photovoltaic systems as eligible for equipment permitted to be connected to the
supply side of the service disconnecting means. Since Enphase Energy Systems are solar photovoltaic
systems, a supply side connection of an Enphase System may be accepted by AHJs to fully meet Code
section 705.12. Since 705.12(A)requirements are met, it seems logical that the 705.12(D)requirements
for connections to the load-side of the service disconnect means are not applicable.
Load-Side Connection to Single-Phase 120/240 Volt Services
Solution: Refer to section 90.4 and the previous code edition, NEC 2011. No listed backfeed capable AC
AFCI solutions or acceptable equipment to enclose the cable harness exist. Until such products are
generally available from manufacturers,when making load side connections, complying with NEC 2014
Section 705.12(D) (6) is achieved by discretionary guidance per NEC 2014 Section 90.4.This means to
refer to the previous code edition NEC 2011 Section 705.12,where AC Arc-Fault Circuit Protection is not
a requirement for utility-interactive inverters.
NEC 2014 Code Reference
705.12(D) Utility Interactive Inverters.The output of a utility-interactive inverter shall be
permitted to be connected to the load side of the service disconnecting means of the other
source(s)at any distribution equipment on the premises.Where distribution equipment, including
switchgear, switchboards, or panelboards, is fed simultaneously by a primary source(s)of
electricity and one or more utility-interactive inverters, and where this distribution equipment is
2 0 2015 Enphase Energy Inc.All rights reserved. January 2015
NEC 2014—Enphase System Code Compliance
capable of supplying multiple branch circuits or feeders, or both,the interconnecting provisions
for the utility-interactive inverter(s)shall comply with 705.12(D)(1)through (D)(6).
705.12 (D)(4)Suitable for Backfeed.Circuit breakers, if backfed, shall be suitable for such
operation.
705.12(D)(6)Wire Harness and Exposed Cable Arc-Fault Protection.A utility-interactive
inverter(s)that has a wire harness or cable output circuit rated 240 V, 30 amperes, or less,that is
not installed within an enclosed raceway,shall be provided with listed ac AFCI protection.
This NEC 2014 code section allows connection of an electric power source to the load side of service
disconnect means and requires that the"interconnecting provisions for the utility-interactive inverter(s)
shall comply with 705.12(D)(1)through (13)(6)". Since the Enphase system contains one or more
microinverters,which are the utility-interactive inverter(s),this section applies when connecting a system
to the load side of a service disconnecting means. 705.12(D)(6)specifically requires that exposed AC
cable systems, such as the Enphase Engage Cable,which is not feasibly run in enclosed raceway,to be
protected by listed AC Arc-Fault Circuit Interrupter(AC AFCI)functionality. Given that utility-interactive
inverters cannot operate without a utility service source,the location of the AC AFCI protecting the cable
must logically be applied at the utility source side of the circuit.AC AFCI circuit breakers are the
commonly available devices for single-phase branch circuits.
No suitable for backfeed AC AFCI circuit breakers exist.
Since Enphase Microinverters are utility-interactive inverters that backfeed into the electrical service
through the overcurrent protection device, any AC AFCI circuit breakers must be specifically backfeed
capable, per 705.12(D)(4).
If terminals of circuit breaker AFCIs are marked "Line"and "Load,"then the AFCI product is not backfeed
capable.
No UL standard for backfeed testing exists for AC AFCI circuit breakers.
Furthermore, 705.12(D)(6)requires that ac AFCI protection must be"listed." For a product or product
category to become"listed,"a standard safety test procedure, such as a UL standard, must exist.The
testing standard for AFCI circuit breakers is UL1699,which currently does not have provisions for testing
this product category for backfeed applications. It is clear,that the code requirement is ahead of new
product availability.
Summary
Until suitable for backfeed and listed AC AFCI circuit breakers become generally available, an AHJ is
permitted to refer to 90.4, i.e.,the previous code edition, NEC 2011.
Code Reference
90.4 Enforcement.
This Code may require new products, constructions, or materials that may not yet be
available at the time the Code is adopted. In such event,the authority having jurisdiction may
permit the use of the products, constructions, or materials that comply with the most recent
previous edition of this Code adopted by the jurisdiction.
3 0 2015 Enphase Energy Inc.All rights reserved. January 2015
NEC 2014 — Enphase System Code Compliance
Three-Phase 208/120 Volt Services
Solution: The compliance solution for systems interconnected to three-phase systems is to defer to NEC
90.4.There are no three-phase AC AFCI detection devices in existence. Until backfeed capable three-
phase AC AFCI circuit breakers become generally available, an AHJ is permitted to refer to 90.4, i.e.,the
previous code edition, NEC 2011.Additionally, the NEC 210.12 code intention for any AC AFCI protection
is for single-phase applications in dwellings or dormitory units and not meant for three-phase applications,
example:
Code Reference
210.12 Arc-Fault Circuit-interrupter Protection. ...
210.12(A) Dwelling Units.All 120-volt, single-phase, 15-and 20-ampere branch circuits.....
210.12(B) Branch Circuit Extensions or Modifications—Dwelling Units. ...
210.12(C) Dormitory Units.All 120-volt,single-phase, 15-and 20-ampere branch circuits
Although Chapter 7 applies to"Special Conditions,"the industry must be able to supply generally
available equipment that is safe to use and meets the requirements for these special applications. For
705.12(D) (6)this is not the case for three-phase applications as there are no listed three-phase AC AFCI
detection devices available.
NEC 2014 Section 690.11 DC Arc-Fault Circuit Protection
This requirement is for direct current(DC)Arc-Fault Circuit protection and only applies to systems with
DC voltages above 80 VDC. Enphase Microinverter systems are exempted from this requirement as they
always operate well below 80 VDC.The requirement is basically unchanged from the NEC 2011, and it is
unnecessary to add DC AFCI to an Enphase Microinverter System installation.
Code Reference
690.11 Arc-Fault Circuit Protection (Direct Current). Photovoltaic systems with do source
circuits, do output circuits, or both, operating at a PV system maximum system voltage of 80 volts
or greater, shall be protected by a listed (dc)arc-fault circuit interrupter, PV type, or other system
components listed to provide equivalent protection.
4 0 2015 Enphase Energy Inc.All rights reserved. January 2015
Enphase®Energy//Rapid Shutdown
Rapid shutdown is built- in
The 2014 edition of the National Electrical Code (NEC 2014)added What's new in NEC 2014?
new rapid shutdown requirements for PV systems installed on buildings. NEC 2014,Section 690.12 applies
Enphase Microinverters fully meet rapid shutdown requirements in the to PV conductors over 10 feet from
new code without the need to install any additional electrical equipment. the array and requires that the
condduu ctors power down to 30 volts
and 240 volt-amperes within 10
seconds of rapid shutdown initiation.
String inverters require work arounds for rapid shutdown
Work around. Work around.
Specialized Rapid Shutdown String inverter installed
electrical box installed on the on roof, a hostile
roof within 10 feet of array. environment that string
inverters are not built
Work around. to live in.
Shutoff switch that is
easily accessible to first
responders on the ground.
■ fl
Work around.
Extra conduit in installation. Residential String Inverter Commercial String Inverter
Enphase comes standard with rapid shutdown capability
All Enphase microin- Enphase microinverters
verters,even those that can safely shut down
were previously installed, automatically, leaving
inherently meet rapid only low-voltage DC
shutdown requirements, electricity isolated to
no additional equipment the PV module
or workarounds needed
CD
Residential Microinverter Commercial Microinverter
enphase
To learn more, visit enphase.com E N E R G Y