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EXPEDITED PERMIT PROCESS FOR PV SYSTEMS
MICRO_INVERTER
The Solar America Board for Codes and Standards (Solar ABCS) Expedited Permit Pro-
cess provides a means to differentiare systems that can be permitted quickJy and easily
due to their similarity with the majority of small-scale PV sysrems. Those systems with
unique characteristics may be handled with small addirions ro rhis Expedired Permir
Process or may require much more information, depending on the uniqueness of the
installation.
The following pages contain forms for the Micro-lnverter to use with the Expedited Per-
mit Process. The Standard String, AC Module, and Supply-Side Connecrion forms
are also available as interactive PDF files at wwwsolarabcs.orgi permitring. ln jurisdic-
tions that have adopted the Expedited Permit Process for PV Systems, these forms can
be filled out electronically and submined in either prinred form and via email. An elec.
tronic format is used so that the supplied information is srandardized and legible for rhe
local jurisdiction.
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EXPEDITED PERMIT PROCESS FOR PV SYSTEMS . MICRO,INVERTER
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EXPEDITED PTRMIT PROCESS FOR SMALL-SCALE PV SYSTEMS
MICRo-INVERTER
The informauon in this guideline is intended to help loca.l jurisdictions and contractors identity when PV sysrem insBllarions
are simple, needing only a basic review and when an insra.llation is more complex. It is likely that 50 %-75 % of all residential
sysEms will compty wirh these simple criteria. For projects rhat fail ro meet the simple criteria, resolution sreps have been
suggested !o provide as a pati to permil approval.
Required Infonnation Jor Peflnit:
l. Sire plan showing location of major components on rhe property. This drawing need not be exacrly to scale, but it
should represenr relative locarion of components at site (see supplied example site plan). PV arrays on dwellings
with a 3'perimeter space at ridge and sides may not need separate nre service review.
2. Electrical diagram showing Pv array confrguration, wiring system, overcurrent protec on, inverter, disconnecB.
required signs, and ac connection to building (see supplied standard electrical diagram).
3. Specifrcaion sheeG and insallation manuals (if available) for all manufactured componenrs lncluding, but not
limited to, PV modules, inverter(s), combiner box, disconnects, and mounting system.
Step 1 : Structural Review o[ PV Array Mounting System
ts tlre array to be mounted on a defined, permitted roof structure t N"" Eno
IJ No due to non-compliant rooJ or a ground mount. submit completed w6rhsheet Jor the srructure WKSI .
Roof InJormation:
(Yes = com osition, I ighrweight masonry, melal, erc. .)t+ rr)r
Il No,rool strucfire I (No = heavy masonry, slate, etc.. .)
En"2. Does the roof have a single roof covering?
If No, submit completed wothsheet lor rooj wxs,
3. Provide method and type of weatherproofing roof penetrations (e.9. flashing, caulk)
M ounting Sy s t en InJonna tion :
l ls the mounting structure an engineered product designed to mount Pv
beneath the module frames? E[*es Eno
Il No, provide dctails oJ structural atulnment certiled by a dcsign ri,I|lessional.
2. For manufacrured mounting systems, fill ou t information on the mountl
a. Mounting System ManufacrurerE(o lo duct Name and
b. Toral Weight of PV Modules and Rails &ao .121)
modules with no more than an 18" gap
ng sysrem below:
Modet# rYC) v nlY\ch$^<n\s.fkrn
c Total Number of Attachment Points ?4
d. Weighr per Attachmenr Potn! (b+cl 1q lbs (if grearer than 45 lbs, see Wl$l)
e. Maximum Spacing Between Attachment Poiats on a Rall ----:44-inches (see product manual for
maximum spacing allowed based on maximum design wi
f. Total Surface Area of PV Modules (square feet)-+aa
g. Disrributed Weight of PV Module on Roof (b + f)
I tlistributed veight ol the W syst€m is yeater than 5 lbstf , see WI<51.
Step 2: Electrical Review o[ PV System (Calculations for Electrical Diagram)
In order br a Pv s!,stem to be consldcrcd for an erpedited perrnit prccess, the following must apply:
l. PV modules, utility-interactive inverters, and combiner boxes are identifled for use in PV systems.
2. The Pv array is composed of 4 series strings or less per inverter.
3. The total inverter capaciry has a continuous ac power output 15,440 Watts or less
4. The ac interconnection point is on rhe load side of service disconnecting means (690.64(8)).
5. One of the sandard elecrical diagrams(El I,EI.Ia,EI.Ib,orELIc)canbeusedtoaccuratelyrepresentthePV
system. lnteractive PDF diagrams are available ar www.solarabcs.org/permiuing.
Fill out the standard electical diagram completely. A guid.e to the electrical diagram is provid.ed. to help the applicant
understand each blank to f in. A the electrico.l system is more complex than the standord electrical diagram can elJectively
communicate, provide an altemative diagram with appropriate detail.
2 ExpEDITED PERMIT PRocEss FoR PV sysrEMs - MICRo-INVERTER
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MICRO. I NVERTER ELECTRICAL DIAGRAM
One-Line Standard Electrical Diagram
for Micro-lnverter PV Systems
Sit6 Nama:
Site Addross:
Systom AC Sizs
NTS
o EOUIPMTNT SCIITOUIE
TAG
1
1
DESCRIPTION
PV DC or AC MOOULE
DC;/AC INVERTER (MICRO)
PART NUMAER NOTES
3 .r-Box (rF usED)
5
6
,
AC COMB. PANEL (rF USED)
GEN METER (IF USED)
AC DTSCONNECT (rF USED)
8 SERVICE PANEL
UTILJTY
SERVICE
SEE GUIOE APPENDIX D FOR
0
ARRAY GROUNOING
MICRO.INVERTERS
IN BRANCH.
CIRCUIT
BU ILDING
GROUNDING
ELECTRODEMICRO.INVERTERS
IN ERANCH-
CIRCUIT
FOR UNUSED MODULES
PUT 'N/A' in BLANK ASOVE
A CONDUIT ANO CONOUCIOS SCHTOULT
DESCRIPTION OR CONOUCTOR TYPE COND NUMBER OF CONDUII
6AUGE CONDUCTORS TYPE
1
2
USE-2E or Pv wlRE f)
GEC O EGC O X AI.L THAT APPTY
MFG MFG Cablo
3 EXTERIOR CAALE LISTED W INV MFG MFG C6bkt
TllllryN-2 El o. XHHW-2 E or RHW-2 tr
a
GECO EGCO X ALL THATAPPLY
NO DC GEC IF 690 35 SYSfEM
TI-{WN-2 O o. XHHW-2 O o. RHW-2 E
SAME
GEC O EGc E] XAILTHATAPPLY SAME
CONDU
SIZE
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SAME
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NOTES FOR MICRO-INVERTER ELECTRICAL DIAGRAM
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[i Notes for One-Line Standard Electrical
Diagram for Single-Phase PV Systems
Sit€ Name:
Sito Address:
System AC Sizs
stcNs-sEE curor SECroN 7
PV MODULE MTINGS O STC (Guid. Section 5)
NOIES FOR ALL ORAWINGS SIGN FOR DC DISCONNECT
No sign n€calsary sinca 690.51
marking on PV modulo covels
no€dod intormation
SIGI{.EAR IN.VIEIES A{PAAND AE
olsco tiEcl llErJsEp.)
SOLAR PV SYSTEM
AC POINT OF CONNECTION
THIS PANEL FED BY MULTIPLE
SOURCES (UTILITY AND SOLAR)
AC OUTPUTCURRCNT Y?-
HOMINAL ACVOLTAGF L40
OCPO = OVERCURRENT PROTECTION O€VICE
NATIONAI ELECTRICA]. CODE. REFERENCES
sHowN As (IvEc )oo(..a9
P
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INVERfER RATINGS (Guide Section 4)
INVTRTIR MA(I
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MAX POWER O 4O"C 7-1
\+_t
NOMINAL AC VOLIAGE 240
MAX AC CURRENT *z
MAX OCPD RATING
IQIES FOaIRBAYCIRCUII WIRING Ltuide Sadie.r 6 r.d E .nd Allendx E]:NOTES FOR INVERTER CIRCUITS (Gudc S€ctbn 6 and 9)
1 ) LOWEST EXPECT
EXIREME DRY AULB
AMEIENT TEMPERATURE BASED ON ASHRAE MINIMUM MEAN IrolTEMPERATURE FOR ASHRAE LOCATION MOSI SIMILAR 1) IF UTILIY REQUIRES A VEIALE-BREAK SWITCH, OOES THIS SWTCH MEET THE
REOUIREMENT? YEStr NOtr iUA tr
2)IF GENERATION METER REQUIRED, DOES THIS METER SOCXET MEET THE
REOUIREMENT? YES tr NOtr N/Atr
3) SrzE PHOTOVOLTATC PO\rr/ER SOURCE tOC) CO DUCTORS BASEO Ot{ MAX
CURRENT ON NEC 690,53 SIGN OR OCPO RATING AT DISCONNECT
4) SIZE INVERTER OUTPUT CIRCUIT (AC) CONDUCTORS ACCOROING TO INVERTER
OCPD AIaPERE RATlilG (Sa Guir. Sirdrq! 9)
INSIALLATION LOCATION LO\IYEST EXPECTED $'AIENT TEMP "c
2.) HIGHEST CONTINUOUS AMBIENT TEMPERATURE EASEO ON ASHRAE HIGHEST
MONTH 2% DRY BULA TEMPERATURE FOR ASHRAE LOCATION MOST SIMILAR TO
|NSTALLATIO|/ LOCATION HTGHEST COI{TINUOUS TEMPERATURE _.C
2,) 2OO9 ASHRAE FUNDAMENTALS 2% OESIGN TEMPERATURES DO NOT EXCEEO4TC IN THE UNITED STATES (PALM SPRINGS, CA IS 44 1'C) FOR LESS THAN 9
CURRENTCARRYING COI.IDUCTORS IN ROOF+{OUNTED SUNLIT CONDUIT AI
LEASI 0.5'AAOVE ROOF A'{D USING THE OUTDOOR DESIGN TEMPEMTURE OF
47'C OR LESS (ALL OF UNTTED STATES),
6) 12 AWG, gOOC CONOUCTORS ARE GENERALY ACCEP]AALE FOR MODULES
WITH llc OF 7 68 ATIPS OR LESS WHEN PROTECTEO BY A l2-AlrP OR SMALLER
FUSE,
b) 10 awc. gocc coNDUcToRSARE GENERAT-LY ACCEPTAaLE FOR MOOULES
WITH |lc OF 9 6 AI,PS OR LESS WHEN PROTECTEO AY A 1'AI,P OR SMALLER
FUSE
5)TOTAT OF INVERTER OUTPUT CIRCUIT OCPO(!), ONE FOR EACH MTCRO-
IIivERTER CIFCUIT DoEs ToTAI. SUPPLY BREAI(ERS iciMPLY WITH 120% gUsaAR
EXCEPTION lN 69o.6,{(BX2X6)? YEStr NOtr
MOOULT MA(E frnf o qc)\av.
MOOULT MODIL 'JLYtl Aatr,^^ ttol
MAX POWER-POTNT CURRENT 0*)
MAX POWER.POINT VOLTAGE (VE)
'4ri{nn
31,! v
oPEN4TRCUlI VOLTAGE (Voc)VQ,Av
sHoRT{lRCUrr CURRENT (t3c)
MAX SERTES FUSE (OCPO)
q59ct
MAXIMUM POWER (PC)A4Or,t)i
MAX VOLTAGE (TYP 6O0Voc)
voc TEMP COEFF (mvr}oot.LfCor -4*
€n9nase
INVERTER MOOTL {rn(/r-Uo-){tS
MAX DC VOLT RATING qF, Vb\l
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