HomeMy WebLinkAboutLA185059 -18886 Iden Ave 2
Wyssling Consulting
76 North Meadowbrook Drive
Alpine, UT 84004
Scott E. Wyssling, PE, PP, CME office (201) 874-3483
swyssling@wysslingconsulting.com
October 13, 2020
Illumine Industries
39111 Paseo Padre Parkway Suite 313
Fremont, CA 94538
Re: Engineering Services
Adair Residence
18886 Iden Avenue, Lakeville MN
13.135 kW System
To Whom it May Concern:
Pursuant to your request, we have reviewed the following information regarding solar panel installation on
the roof of the above referenced home:
1. Site Visit/Verification Form prepared by Illumine Industries Solar Engineers representative
identifying specific site information including size and spacing of rafters for the existing roof
structure.
2. Design drawings of the proposed system including a site plan, roof plan and connection
details for the solar panels. This information was prepared by Illumine Industries Solar
Engineers and will be utilized for approval and construction of the proposed system.
3. Photographs of the interior and exterior of the roof system identifying existing structural
members and their conditions.
Based on the above information we have evaluated the structural capacity of the proposed roof system to
support the additional loads imposed by the solar panels and have the following comments related to our
review and evaluation:
Description of Structure:
The existing residence is typical wood framing construction with the roof system consisting of truss system
with all chords constructed of 2 x 4 dimensional lumber at 24” on center. The attic space is unfinished and
photos indicate that there was free access to visually inspect the size and condition of the roof rafters. All
wood material utilized for the roof system is assumed to be Doug-Fir #2 or better with standard construction
components. The existing roofing material consists of an asphalt shingles. Photos of the dwelling also
indicate that there is a permanent foundation.
A. Loading Criteria Used
115 MPH wind loading based on ASCE 7-16 Exposure Category “B” at a slope of 29 degrees
7 PSF = Dead Load roofing/framing Live Load = 20 PSF Snow Load = 50 PSF
3 PSF = Dead Load solar Ballast System/hardware
Total Dead Load =10 PSF
The above values are within acceptable limits of recognized industry standards for similar
structures in accordance with the Minnesota Uniform Construction Code (2018 MRC). Analysis
performed of the existing roof structure utilizing the above loading criteria indicates that the
existing rafters will support the additional panel loading without damage, if installed correctly.
Page 2 of 2
B. Solar Panel Anchorage
1. The solar panels shall be mounted in accordance with the most recent “IronRidge Installation
Manual”, which can be found on the IronRidge website (http://IronRidge.com/). If during solar panel
installation, the roof framing members appear unstable or deflect non-uniformly, our office should
be notified before proceeding with the installation.
2. Maximum allowable pullout per lag screw is 235 lbs/inch of penetration as identified in the National
Design Standards (NDS) of timber construction specifications for Doug-Fir (North Lumber)
assumed. Based on our evaluation, the pullout value, utilizing a penetration depth of 2 ½”, is less
than what is allowable per connection and therefore is adequate. Based on the variable factors for
the existing roof framing and installation tolerances, using a thread depth of 2 ½” with a minimum
size of 5/16” lag screw per attachment point for panel anchor mounts should be adequate with a
sufficient factor of safety.
3. Considering the roof slopes, the size, spacing, condition of roof, the panel supports shall be placed
no greater than 48” o/c.
4. Panel supports connections shall be staggered to distribute load to adjacent rafters.
Based on the above evaluation, it is the opinion of this office that with appropriate hardware being utilized the
roof system will adequately support the additional loading imposed by the solar panels. This evaluation is in
conformance with the Minnesota Uniform Construction Code, current industry and standards, and based on
information supplied to us at the time of this report.
Should you have any questions regarding the above or if you require further information do not hesitate to
contact me.
Very truly yours,
Scott E. Wyssling
Minnesota License No. 57927
UM PMMSP AC CB
VICINITY MAP
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
SITE PLAN LAYOUT
CONDUIT RUN
1'-6" FIRE SETBACK
KAT AND ERIC ADAIR - 13.135kW DC, 12.913kW AC
COVER PAGE
T-1
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
1.MODULES ARE LISTED UNDER UL 1703 AND
CONFORM TO THE STANDARDS.
2.INVERTERS ARE LISTED UNDER UL 1741 AND
CONFORM TO THE STANDARDS.
3.DRAWINGS ARE DIAGRAMMATIC, INDICATING
GENERAL ARRANGEMENT OF THE PV SYSTEM AND
THE ACTUAL SITE CONDITION MIGHT VARY.
4.WORKING CLEARANCES AROUND THE NEW PV
ELECTRICAL EQUIPMENT WILL BE MAINTAINED IN
ACCORDANCE WITH NEC 110.26.
5.ALL GROUND WIRING CONNECTED TO THE MAIN
SERVICE GROUNDING IN MAIN SERVICE PANEL/
SERVICE EQUIPMENT.
6.ALL CONDUCTORS SHALL BE 600V, 75°C
STANDARD COPPER UNLESS OTHERWISE NOTED.
7.WHEN REQUIRED, A LADDER SHALL BE IN PLACE
FOR INSPECTION IN COMPLIANCE WITH OSHA
REGULATIONS.
8.THE SYSTEM WILL NOT BE INTERCONNECTED BY
THE CONTRACTOR UNTIL APPROVAL FROM THE
LOCAL JURISDICTION AND/OR THE UTILITY.
9.ROOF ACCESS POINT SHALL BE LOCATED IN
AREAS THAT DO NOT REQUIRE THE PLACEMENT
OF GROUND LADDERS OVER OPENINGS SUCH AS
WINDOWS OR DOORS, AND LOCATED AT STRONG
POINTS OF BUILDING CONSTRUCTION WHERE THE
ACCESS POINT DOES NOT CONFLICT WITH
OVERHEAD OBSTRUCTIONS SUCH AS TREES,
WIRES OR SIGNS.
10.PV ARRAY COMBINER/JUNCTION BOX
PROVIDES TRANSITION FROM ARRAY WIRING TO
CONDUIT WIRING
GENERAL NOTES
SCALE:1"=30'-0"
(E) MAIN SERVICE METER
BI-DIRECTIONAL-1PHASE,
3WIRE 120/240V (EXTERIOR)
(N) 100AMP UTILITY AC
DISCONNECT(EXTERIOR)(VISIBLE BLADE,
LOCKABLE, READILY ACCESSIBLE,
LABELED, LOCATED WITHIN 10' OF MAIN
SERVICE METER, NO CLEARANCE ISSUES)
(N) UTILITY OWNED PV PRODUCTION
METER(EXTERIOR)120V/240V,
1 PHASE, 3 WIRE, BYPASS LEVER, 200A (LOCATED
NEXT TO UTILITY AC DISCONNECT, 24/7 READILY
ACCESSIBLE, LABELED,LOCATED WITHIN 10' OF
MAIN SERVICE METER, NO CLEARANCE ISSUES)
(E) 150A MAIN SERVICE
PANEL (EXTERIOR)
SHEET CATALOG
INDEX NO.DESCRIPTION
T-1 COVER PAGE
M-1 MOUNTING DETAIL
M-2 STRUCTURAL DETAIL
M-3 INSTALLATION CALCULATION
E-1 SINGLE LINE DIAGRAM
S-1 OPTIMIZER MAP AND STRING
CONFIGURATION
PL-1 LABELING & WARNING SIGNS
PL-2 WARNING PLACARDS
SS SPEC SHEET(S)
·ELECTRIC CODE: NEC 2020
·FIRE CODE: IFC 2018
·BUILDING CODE: MBC 2018
·RESIDENTIAL CODE: MRC 2018
APPLICABLE CODES
PROPERTY LINE
PHOTOVOLTAIC ARRAY
ON THE ROOF
DRIVE WAY
IDEN AVEAPPROX 676'HUXLEY AVEPROPERTYLINENOTE: NO GATE OR FENCE
TOTAL AREA OF ROOF (SQ.FT)2462
TOTAL ARRAY AREA (SQ.FT)784.5156
TOTAL AREA OF ARRAY COVERED
IN THE ROOF (%)31.86
3' FIRE SETBACK
(N) ENPHASE COMBINER + CABINET
120/240 NEMA 3R
INSTALL (4) 20A BREAKERS (ONLY
FOR SOLAR, NO LOADS TO BE
ADDED) (UL 1741 CERTIFIED)
1'(MAXIMUM 1' SPACING
BETWEEN COMPONENTS)
GENERAL SYSTEM INFORMATION:
SYSTEM SIZE:
13135W DC, 12913W AC
MODULES:
(37)LG SOLAR LG355N1C-V5
INVERTER:
(37)ENPHASE IQ7A-72-2-US ,
BRANCH DETAILS:
1X10, 1X9, 1X9 AND 1X9 ENPHASE BRANCHES
SCOPE OF WORK
147'-6"
76'
153'
7'-10"
5'
39'-2"
49'-6"
AERIAL VIEW
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
MOUNTING DETAIL
M-1
NOTE:PENETRATIONS ARE STAGGERED
1.STRUCTURAL ROOF MEMBER LOCATIONS ARE
ESTIMATED AND SHOULD BE LOCATED AND
VERIFIED BY THE CONTRACTOR WHEN LAG BOLT
PENETRATION OR MECHANICAL ATTACHMENT TO
THE STRUCTURE IS REQUIRED.
2.ROOFTOP PENETRATIONS FOR SOLAR RACKING
WILL BE COMPLETED AND SEALED WITH APPROVED
SEALANT PER CODE BY A LICENSED CONTRACTOR.
3.LAGS MUST HAVE A MINIMUM 2.5" THREAD
EMBEDMENT INTO THE STRUCTURAL MEMBER.
4.ALL PV RACKING ATTACHMENTS SHALL BE
STAGGERED BY ROW BETWEEN THE ROOF FRAMING
MEMBERS AS NECESSARY.
5.ROOF MOUNTED STANDARD RAIL REQUIRES ONE
THERMAL EXPANSION GAP FOR EVERY RUN OF RAIL
GREATER THAN 40'.
6.ALL CONDUCTORS AND CONDUITS ON THE ROOF
SHALL BE MINIMUM 2.5" ABOVE THE ROOF
SURFACE (INCLUDING CABLES UNDERNEATH
MODULES AND RACKING).
7.THE PV INSTALLATION SHALL NOT OBSTRUCT ANY
PLUMBING, MECHANICAL OR BUILDING ROOF
VENTS.
ROOF ACCESS PATHWAYS AND SETBACKS:
IFC 605.11.1.2.2 HIP ROOF LAYOUTS
PANELS AND MODULES INSTALLED ON GROUP R-3
BUILDINGS WITH HIP ROOF LAYOUTS SHALL BE
LOCATED IN A MANNER THAT PROVIDES TWO,
3-FOOT WIDE ACCESS PATHWAYS FROM THE EAVE
TO THE RIDGE ON EACH ROOF SLOPE WHERE
PANELS AND MODULES ARE LOCATED. THE ACCESS
PATHWAY SHALL BE AT A LOCATION ON THE
BUILDING CAPABLE OF SUPPORTING THE FIRE
FIGHTERS ACCESSING THE ROOF.
IFC 605.11.1.2.3 SINGLE-RIDGED ROOFS
PANELS AND MODULES INSTALLED ON GROUP R-3
BUILDINGS WITH A SINGLE RIDGE SHALL BE
LOCATED IN A MANNER THAT PROVIDES TWO,
3-FOOT WIDE ACCESS PATHWAYS FROM THE EAVE
TO THE RIDGE ON EACH ROOF SLOPE WHERE
PANELS AND MODULES ARE LOCATED.
IFC 605.11.1.2.4 ROOFS WITH HIPS AND
VALLEYS
PANELS AND MODULES INSTALLED ON GROUP R-3
BUILDINGS WITH ROOF HIPS AND VALLEYS SHALL
NOT BE LOCATED CLOSER THAN 18 INCHES TO A
HIP OR A VALLEY WHERE PANELS/MODULES ARE TO
BE PLACED ON BOTH SIDES OF A HIP OR VALLEY.
WHERE PANELS ARE TO BE LOCATED ON ONLY ONE
SIDE OF A HIP OR VALLEY THAT IS OF EQUAL
LENGTH, THE PANELS SHALL BE PERMITTED TO BE
PLACED DIRECTLY ADJACENT TO THE HIP OR
VALLEY.
EXCEPTION: THESE REQUIREMENT SHALL NOT
APPLY TO ROOFS WITH SLOPES OF TWO UNITS
VERTICAL IN 12 UNITS HORIZONTAL (2:12) OR
LESS.
INSTALLATION NOTES
ALUMINIUM RAILS
SCALE:1"=10'-0"
2 X 4 PRE-FABRICATED
TRUSSES@2'-0"SPACING
ARRAY MP-1
ARRAY MP-2
SITE INFORMATION - WIND SPEED: 115 MPH AND SNOW LOAD: 50 PSF
SR.
NO AZIMUTH PITCH NO. OF
MODULES
ARRAY AREA
(SQ. FT.)ROOF TYPE ATTACHMENT ROOF
EXPOSURE FRAME TYPE FRAME
SIZE
FRAME
SPACING
MAX RAIL
SPAN
OVER
HANG
MP-01 88°29°22 466.5 COMPOSITION
SHINGLE FLASH FOOT ATTIC PRE-FABRICATED TRUSSES 2 X 4 2'-0"4'-0"2'-0"
MP-02 268°29°15 318.0 COMPOSITION
SHINGLE FLASH FOOT ATTIC PRE-FABRICATED TRUSSES 2 X 4 2'-0"4'-0"2'-0"
3'
3'
3'
4'
TOTAL AREA OF ROOF (SQ.FT)2462
TOTAL ARRAY AREA (SQ.FT)784.5156
TOTAL AREA OF ARRAY COVERED
IN THE ROOF (%)31.86
MODULE
END CLAMPMID CLAMPMODULE
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
STRUCTURAL DETAIL
M-2
MODULES DATA
LG SOLAR LG355N1C-V5
MODULE DIMS 69"x44.25"x1.57"
LAG SCREWS 5/16"x3.5":2.5"MIN
EMBEDMENT
MID-CLAMP AND END-CLAMP ANATOMY
SCALE:NTS
GROUNDING LUG
MID CLAMP
ASSEMBLY
MODULE
FRAME
RAIL
MODULE TO MODULE & MODULE TO RAIL
GROUNDING MID-CLAMP
SCALE: NTS
GROUNDING DETAILS
IRONRIDGE RAIL
IRONRIDGE INTERNAL SPLICE
SELF-DRILLING SCREW
SCALE: NTS
RAIL TO RAIL
T-BOLT
2 X 4 TRUSSES
@2'-0"SPACING
COMPOSITION SHINGLE ROOF
MODULE
5/16" X 3.5" LAG SCREW
1 BOLT PER PENETRATION
LOAD BEARING WALL SCALE:NTS
ROOF FRAMING DETAILS
ATTACHMENT DETAIL-FLASH FOOT
FLASH FOOTSOLAR MODULE
RAIL
5/16 HEX-BOLT
STAINLESS STEEL 5/16" HANGER
BOLT 2.5" EMBEDMENT
PILOT HOLE REQUIRED
6" MAX
DEAD LOAD CALCULATIONS
BOM QUANTITY LBS/UNIT TOTAL WEIGHT
(LBS)
MODULES 37 42.8 1583.60
MID-CLAMP 56 0.050 2.80
END-CLAMP 36 0.050 1.80
RAIL LENGTH 148 0.680 100.64
SPLICE BAR 12 0.360 4.32
FLASH FOOT 88 1.35 118.80
MICRO-INVERTER 37 2.38 88.06
TOTAL WEIGHT OF THE SYSTEM (LBS)1900.02
TOTAL ARRAY AREA ON THE ROOF (SQ. FT.)784.52
WEIGHT PER SQ. FT.(LBS)2.42
WEIGHT PER PENETRATION (LBS)21.59
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
INSTALLATION
CALCULATION
M-3
MODULES DATA
LG SOLAR LG355N1C-V5
MODULE DIMS 69"x44.25"x1.57"
INSTALLATION CALCULATION
KAT AND ERIC ADAIR - 13.135kW DC, 12.913kW AC
ARRAY-2, ASPHALT SHINGLES
IRONRIDGE FLASH FOOT 48" SPACING
1 MODULES X 4 = 4 ATTACHMENT
RAIL LENGTH/ROW: 48.25(44.25" MODULE(1)
+2" ENDCLAMP(2)
+0.5" MIDCLAMP(0))
USE(1) 14' RAIL =168"-48.25" = CUT(119.75")X4
ARRAY-3, ASPHALT SHINGLES
IRONRIDGE FLASH FOOT 48" SPACING
6 MODULES X 2.1 = 13 ATTACHMENT
RAIL LENGTH/ROW: 272(44.25" MODULE(6)
+2" ENDCLAMP(2)
+0.5" MIDCLAMP(5))
USE(2) 14' RAIL + (1) SPLICE BAR =336"-272" =
CUT(64")X2
ARRAY-1, ASPHALT SHINGLES
IRONRIDGE FLASH FOOT 48" SPACING
5 MODULES X 2.4 = 12 ATTACHMENT
RAIL LENGTH/ROW: 227.25(44.25" MODULE(5)
+2" ENDCLAMP(2)
+0.5" MIDCLAMP(4))
USE(2) 14' RAIL + (1) SPLICE BAR =336"-227.25" =
CUT(108.75")X10
ARRAY-4, ASPHALT SHINGLES
IRONRIDGE FLASH FOOT 48" SPACING
4 MODULES X 2.25 = 9 ATTACHMENT
RAIL LENGTH/ROW: 182.5(44.25" MODULE(4)
+2" ENDCLAMP(2)
+0.5" MIDCLAMP(3))
USE(1) 17' RAIL =204"-182.5" = CUT(21.5")X2
4
(N)PV
REVENUE METER
M 4
(N)100A UTILITY
AC
DISCONNECT
70A FUSE1'
LINE
(N) 100AMP UTILITY AC
DISCONNECT(EXTERIOR)(VISIBLE
BLADE, LOCKABLE, READILY
ACCESSIBLE, LABELED, LOCATED
WITHIN 10' OF MAIN SERVICE
METER, NO CLEARANCE ISSUES)
(N) UTILITY OWNED PV PRODUCTION
METER(EXTERIOR)120V/240V, 200A
(LOCATED NEXT TO UTILITY AC
DISCONNECT, READILY ACCESSIBLE,
LABELED, LOCATED WITHIN 10' OF MAIN
SERVICE METER, NO CLEARANCE ISSUES)
(E)150A END FED
MAIN PANEL
UTILITY
GRID
(E)150A MAINBREAKER(E) GROUND
ELECTRODE
SUPPLY SIDE TAP
4
EXISTING 120/240V 1PH 60HZ
METER#:DAKOTA ELECTRIC
73 283 910M
20'
1'
(1) BRANCH OF (9) MICRO-INVERTERS
(1) BRANCH OF (9) MICRO-INVERTERS
(1) BRANCH OF (9) MICRO-INVERTERS
(N)JUNCTION
BOX OR EQUI.
1 DC CONDUCTORS
AC CONDUCTORS20A
10A
20A
20A
20A
AC COMBINER WITH
ENPHASE ENVOY-S
EN-X-IQ-AM1-240-2
120/240 NEMA 3R INSTALL
(4)20A PV 2P BREAKERS
ENPHASE IQ
COMBINER + CABINET
(ONLY FOR SOLAR, NO
LOADS TO BE ADDED)
(37)LG SOLAR LG355N1C-V5,MODULES WITH
(37)ENPHASE IQ7A-72-2-US , 1-PHASE, 290W OUTPUT, 240V INVERTER,
(UL1741 CERTIFIED)
INVERTER COMPLIES WITH UL1741
5'
(1) BRANCH OF (10) MICRO-INVERTERS
2
20'
SINGLE LINE DIAGRAM: DC SYSTEM SIZE - 13135W, AC SYSTEM SIZE - 12913W
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SINGLE LINE DIAGRAM
E-1
1.CONDUCTORS EXPOSED TO SUNLIGHT
SHALL BE LISTED AS SUNLIGHT
RESISTANT PER NEC 310.0(D).
2.CONDUCTORS EXPOSED TO WET
LOCATIONS SHALL BE SUITABLE FOR USE
IN WET LOCATIONS PER NEC 310.8(C).
3.MAXIMUM DC/AC VOLTAGE DROP SHALL
BE NO MORE THAN 2%.
4.ALL CONDUCTORS SHALL BE IN CONDUIT
UNLESS OTHERWISE NOTED.
5.BREAKER/FUSE SIZES CONFORMS TO
NEC 240.6 CODE SECTION.
6.AC GROUNDING ELECTRODE
CONDUCTOR SIZED PER NEC 250.66.
7.AMBIENT TEMPERATURE CORRECTION
FACTOR IS BASED ON NEC 690.31(C).
8.AMBIENT TEMPERATURE ADJUSTMENT
FACTOR IS BASED ON NEC
310.15(B)(2)(C).
9.MAX. SYSTEM VOLTAGE CORRECTION IS
PER NEC 690.7.
10.CONDUCTORS ARE SIZED PER WIRE
AMPACITY TABLE NEC 310.16.
ELECTRICAL NOTES
MICRO INVERTER SPECIFICATIONS
MODEL ENPHASE IQ7A-72-2-US
POWER RATING 349W
MAX OUTPUT CURRENT 1.45A
CEC WEIGHTED EFFICIENCY 97%
MAX NO OF MICRO
INVERTERS/BRANCH 11
MAX DC VOLTAGE 58V
MODULE SPECIFICATION
MODEL LG SOLAR
LG355N1C-V5
MODULE POWER @ STC 355W
OPEN CIRCUIT VOLTAGE:Voc 41.4V
MAX POWER VOLTAGE:Vmp 35.7V
SHORT CIRCUIT VOLTAGE:Isc 10.65A
MAX POWER CURRENT:Imp 9.95A
ELECTRICAL CALCULATIONS
AC WIRE SIZING CALCULATIONS BASED OF FOLLOWING EQUATIONS >>
·REQUIRED CONDUCTOR AMPACITY: INVERTER OUTPUT CURRENT X #OF
INVERTERSXMAX CURRENT PER 690.8(A)(3)X125% PER 690.8(B)(2)(A)
·CORRECTED AMPACITY CALCULATIONS:AMPACITY X TEMPERATURE DERATE
FACTOR X CONDUIT FILL DERATE = DERATED CONDUCTOR AMPACITY
·DERATED CONDUCTOR AMPACITY CHECK: MAX CURRENT PER 690.8(B)(2)(2) <
DERATED CONDUCTOR AMPACITY
SUPPLY SIDE TAP CONNECTION SHALL BE MADE WITH 2017 NEC 240.21 ART
SUPPLY SIDE TAP CONNECTION SHALL BE MADE WITH MILBANK (K4977-INT) LUG
CONNECTORS
PRODUCTION METER SHALL BE WIRED SUCH THAT THE DER SYSTEM IS THE SOURCE
MAIN SERVICE METER BI-DIRECTIONAL-1PHASE, 3WIRE
120/240V
NOTE:
1. THE PV AC DISCONNECTS WILL INCLUDE A YELLOW W BLACK LETTERING PLACARD SAYING "PV AC
DISCONNECT".
2. THE UTILITY METER WILL HAVE A YELLOW W BLACK LETTERING PLACARD SAYING "PHOTOVOLTAIC
SYSTEM CONNECTED".
CONDUIT SCHEDULE
TAG ID CONDUIT SIZE CONDUCTOR NEUTRAL GROUND
1 NONE (2) 12AWG ENPHASE Q CABLE
PER BRANCH CIRCUIT NONE (1) 12AWG ENPHASE Q CABLE
2 3/4"EMT OR EQUIV (8) 10AWG THHN/THWN-2 NONE (1) 10AWG THHN/THWN-2
3 1"EMT OR EQUIV (2) 4 AWG THHN/THWN-2 (1)4 AWG THHN/THWN-2 (1) 8AWG THHN/THWN-2
NOTE:
MAIN PANEL RATING:150A, MAIN BREAKER RATING:150A
LINE SIDE TAP: 100% ALLOWABLE BACKFEED IS =150A
OCPD CALCULATIONS:
INVERTER OVERCURRENT PROTECTION= INVERTER O/P I X CONTINUOUS LOAD(1.25)
=1.45x1.25x37=67.06A=>PV BREAKER = 70A
TOTAL REQUIRED PV BREAKER SIZE / FUSE SIZE=>70A PV BREAKER
AC WIRE CALCULATIONS:- MATERIAL:COPPER & TEMPERATURE RATING:90°C
TAG ID REQUIRED CONDUCTOR AMPACITY CORRECTED AMPACITY CALCULATION DERATED CONDUCTOR AMPACITY CHECK
1 1.45 X 10 =14.50 X 1.25 =18.13A 30 X 0.87 X 1 =26.10A 18.13A <26.10A
2 1.45 X 10 =14.50 X 1.25 =18.13A 40 X 0.87 X 1 =34.80A 18.13A <34.80A
3 1.45 X 37 =53.65 X 1.25 =67.06A 95 X 0.87 X 1 =82.65A 67.06A <82.65A
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
OPTIMIZER MAP AND
STRING CONFIGURATION
S-1
MODULES DATA
LG SOLAR LG355N1C-V5
MODULE DIMS 69"x44.25"x1.57"
OPTIMIZER MAP STRING CALCULATION
KAT AND ERIC ADAIR - 13.135kW DC, 12.913kW AC
STRING CONFIGURATION
ENPHASE IQ7A-72-2-US
A 10 MODULES
B 9 MODULES
C 9 MODULES
D 9 MODULES
MAX STRING
LENGTH 11 MODULES
AA
A A
AA
A A
AAB
B
B
B
B
B
BB
B
C
C
C
C
C
C
C
CC
D
D
D
DD
D
D
D
D
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
LABELING AND WARNING
SIGNS
PL-1
NOTE:
LABELS SHALL BE WEATHERPROOF, DURABLE, AND PERMANENTLY MOUNTED. THIS PHOTOVOLTAIC INSTALLATION WILL MEET OR EXCEED
THE REQUIREMENTS OF THE NATIONAL ELECTRIC CODE (NEC) AND WILL PASS ELECTRICAL INSPECTION PRIOR TO UTILITY COMMISSIONING. THE
STATE-LICENSED ELECTRICAL INSPECTOR WILL ALREADY HAVE VERIFIED ALL NEC REQUIREMENTS, INCLUDING LABELING. ALL OUTDOOR LABELS ARE
UV STABLE REFLECTIVE VINYL W/ACRYLIC LAMINATE, PERMANENTLY ATTACHED.OPERATING TEMPERATURE: -40ºF TO 175ºF, CERTIFIED:
UL969
LINE SIDE TAP
LABEL
#1,4,7,8,10,13,14
LABEL #3,8
LABEL #5
LABEL #5
LABEL #5
LABEL #6,12
JUNCTION BOX COMBINER +
CABINET
UTILITY AC
DISCONNECT
UTILITY OWNED PV
PRODUCTION METER
MAIN SERVICE PANEL
PV PANEL ARRAY
UTILITY
SERVICE METER LABEL #16,17
UM PMMSP AC CB
WARNING PLACARD
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
WARNING PLACARDS
PL-2
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
!
WARNING
CAUTION: SOLAR CIRCUIT
CAUTION: SOLAR ELECTRIC
SYSTEM CONNECTED
LABEL LOCATION
POINT OF INTERCONNECTION
(PER CODE: NEC 705.12(D)(7)
[ Not Required if Panel board is rated not less than sum of ampere
ratings of all overcurrent devices supplying it]
ELECTRIC SHOCK HAZARD
THE DC CONDUCTORS OF THIS PHOTOVOLTAIC
SYSTEM ARE UNGROUNDED AND MAY BE
ENERGIZED
LABEL LOCATION
DC DISCONNECT,INVERTER
[PER CODE: NEC 690.35(F)]
[To be used when inverter is ungrounded]
WARNING:PHOTOVOLTAIC
POWER SOURCE
LABEL LOCATION
CONDUIT, COMBINER BOX
[PER CODE: NEC690.31(G)(3)(4) & NEC
690.13(G)(4)]
WARNING-Electric Shock Hazard
No User Serviceable Parts inside
Contact authorized service provide
for assistance
LABEL LOCATION
INVERTER, JUNCTION BOXES(ROOF),
AC DISCONNECT
[PER CODE: NEC 690.13.G.3 & NEC 690.13.G.4]
LABEL LOCATION
DISCONNECT, POINT OF INTERCONNECTION
[PER CODE: NEC690.13(B)]
LABEL LOCATION
AC DISCONNECT , POINT OF INTERCONNECTION
[PER CODE: NEC 690.54]
LABEL LOCATION
MARKINGS PLACED ON ALL INTERIOR AND EXTERIOR DC CONDUIT,
RACEWAYS, ENCLOSURES AND CABLE ASSEMBLES AT LEAST EVERY
10 FT, AT TURNS AND ABOVE/BELOW PENETRATIONS AND ALL
COMBINER/JUNCTION BOXES.
(PER CODE: IFC605.11.1.4)
LABEL LOCATION
POINT OF INTERCONNECTION
[PER CODE: NEC705.12(D)(4)]
ELECTRIC SHOCK HAZARD
DO NOT TOUCH TERMINALS
TERMINALS ON BOTH LINE AND LOAD SIDES MAY
BE ENERGIZED IN THE OPEN POSITION
LABEL LOCATION
AC DISCONNECT,POINT OF INTERCONNECTION
[PER CODE: NEC 690.17(E)]
DC VOLTAGE IS ALWAYS PRESENT WHEN SOLAR
MODULES ARE EXPOSED TO SUNLIGHT
ELECTRIC SHOCK HAZARD
DO NOT TOUCH TERMINALS
TERMINALS ON BOTH LINE AND LOAD SIDES
MAY BE ENERGIZED IN THE OPEN POSITION
WARNING
LABEL LOCATION
AC DISCONNECT,POINT OF INTERCONNECTION
[PER CODE: NEC 690.17(E)]
LABEL LOCATION
WEATHER RESISTANT MATERIAL, DURABLE ADHESDIVE,
UL969 AS STANDARD TO WEATHER RATING (UL LISTING
OF MARKINGS NOT REQUIRED), MIN 38" LETTER HEIGHT
ARIAL OR SIMILAR FONT NON-BOLD,PLACED WITHIN
THE MAIN SERVICE DISCONNECT,PLACED ON THE
OUTSIDE OF THE COVER WHEN DISCONNECT IS
OPERATED WITH THE SERVICE PANEL CLOSED.
(PWER CODE: NEC690.15 ,690.13(B))
WARNING
DUAL POWER SOURCE SECOND
SOURCE IS PHOTOVOLTAIC
SYSTEM
!
!
!SOLAR DISCONNECT
WARNING!
WARNING
INVERTER OUTPUT
CONNECTION
DO NOT RELOCATE THIS
OVER-CURRENT DEVICE
RATED AC OPERATING CURRENT
AC NOMINAL OPERATING VOLTAGE
53.65
240
AMPS AC
VAC
PHOTOVOLTAIC SYSTEM AC DISCONNECT SWITCH
!
POWER TO THIS BUILDING IS ALSO
SUPPLIED FROM THE FOLLOWING
SOURCES WITH DISCONNECTS LOCATED
AS SHOWN
!WARNING:
SOLAR PHOTOVOLTAIC
ARRAYS ON ROOF
ALL PLACARDS SHALL BE WEATHERPROOF, DURABLE, AND PERMANENTLY MOUNTED.
BACKGROUND ON ALL PLACARDS SHALL BE RED WITH WHITE LETTERING U.O.N. PLACARD SHALL BE
MOUNTED DIRECTLY ON THE EXISTING UTILITY ELECTRICAL SERVICE. FASTENERS APPROVED BY THE
LOCAL JURISDICTION
PHOTOVOLTAIC
"D/C" DISCONNECT
TO BE LOCATED ON EXTERNAL D/C
DISCONNECT
#2
D/C DISCONNECT TO BE
PERMANENTLY MARKED AS FOLLOWS
PHOTOVOLTAIC UTILITY
"A/C" DISCONNECT
TO BE LOCATED ON EXTERNAL A/C
DISCONNECT
#3
UTILITY A/C DISCONNECT TO BE
PERMANENTLY MARKED AS FOLLOWS
NEC 690.54, 690.15
#7
CAUTION: PHOTOVOLTAIC
SYSTEM IS LINESIDE TAP
ELECTRIC SHOCK HAZARD
IF GROUND FAULT IS INDICATED NORMALLY
GROUNDED CONDUCTORS MAY BE UNGROUNDED
AND ENERGIZED
WARNING
#4
#1
#5
#6
#8
#10
#11
#12
#13
(E) UTILITY METER
(EXTERIOR)
(N) AC DISCONNECT
(EXTERIOR)
(N) PV PRODUCTION METER
(EXTERIOR)
(E) MAIN SERVICE
PANEL(INTERIOR)
PV PRODUCTION METER
TO BE LOCATED ON PRODUCTION METER
#15
GENERAL SERVICE METER
PER UTILITY REQUIREMENT
#16
PHOTOVOLTAIC
SYSTEM CONNECTED #17
(N) ENPHASE COMBINER +
CABINET (EXTERIOR)
TURN RAPID SHUTDOWN
SWITCH TO THE
"OFF" POSITION TO
SHUT DOWN PV SYSTEM
AND REDUCE
SHOCK HAZARD
IN THE ARRAY
SOLAR ELECTRICPV PANELS
SOLAR PV SYSTEM EQUIPPED
WITH RAPID SHUTDOWN
LABEL LOCATION
AC DISCONNECT , DC DISCONNECT,POINT OF
INTERCONNECTION
(PER CODE: NEC690.56(C))
ADDRESS: 18886 IDEN AVE, LAKEVILLE, MN 55044
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
MODULE SPEC SHEET
SS-1
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
INVERTER SPEC SHEET
SS-2
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
COMBINER SPEC SHEET
SS-3
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
LUG SPEC SHEET
SS-4
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
MOUNT SPEC SHEET
SS-5
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION
SPEC SHEET
ADDRESS:18886 IDEN AVE, LAKEVILLE,
MN 55044
44.675629, -93.249774
APN: 221-720-104-090
DESIGNER/CHECKED BY:
CUSTOMER INFORMATION
KRP/BH
NAME:KAT AND ERIC ADAIR
DATE:10/3/20
SCALE:AS NOTED REV:A
AHJ:MN - CITY OF LAKEVILLE
UTILITY:DAKOTA ELECTRIC
PRN NUMBER:PGS-014415
APPLICATION#:
RAIL SPEC SHEET
SS-6
PHONE: 763-438-1976
ADDRESS:
451 TAFT ST, NE
MINNEAPOLIS, MN 55413
INSTALLER INFORMATION