7 WEBB STREET - BUILDING INSPECTION (2) WE-U5
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<$ISTER_ _IWG�`,01:NEW 2'X_6''RI0.F'iiEltSa'�"O�REEXISTINC3�RArFTER3 �« ' - — _ -. :
Ca'ntrat for Name JOSEPH WYLNCI=CHIRI¢Oy
5BA:. ROOF DIAGMOSTI¢S SO_LrAR,OFafYIASS;,JLLC;
Coritractoc License No:fbS 093116!
A0/23/2014'
48uiItH $Offiaial-. Date" F - -
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Al1lPermit Cards are 4he property.of the;pkdp RTI',OWNEfi
'Com manwealth i ofi Massachusetts,
City, of, Salem
129 W WhlnPft S4 U Plow SaleM VA 01970(91%7459595 4541
_. ....- t Return terd tb Bupoing dlvislull for C9rtlllirata 4f oawpency,.
struc6,re ChT.% OF SALEM BUMLDING PWRMI'T
PERMIT TO BE POSTED'ilN'THEVVINDOW
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19'-0 IG'-10" L 25'-0°
SOUTH ROOF EAST ROOF I EAST ROOF 2
'1 PANELS 6 PANELS 5 PANELS
Mr EXISTING ELECTRIC PANEL
• EXI5TING ELECTIC METER
SOUTH ROOF EAST ROOF I EAST ROOF 2
. y ENPHASE MICRO AZIMUTH: 199 AZIMUTH: 109 AZIMUTH: 109
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INVERTERS PITCH:42 PITCH:42 PITCH:42
J AIR GAP LE55 THAN V(RACK MOUNT)
En hose f ANEL 35PX nR}
p PANELS-235w IS M DUES 23. ♦.n m a
M-'115-LO-2LL-522-ICs Canadmn Solar Panels 18 noouLEs•a5smnssw PER nonuLE Home
SOLAR
ROOF DIAGNOSTICS
50LAR AND ELECTRIC, LLC
SITE MAP
ORAw1NG
NADEAU RESIDENCE BY.nO
CSbP-255P I WEBB STREET REvisloN
PANELS-255W SALEM. MA 01910 ET:++
Cenedlan Soler Panels DATE:23 SEPTEMBER 2014 DWG NO.: 2096
Roof Mounted PV Array 4.47—kW DC _
TOTALS: All wiring to be type THHN/THWN-2/MTW/AWM unless noted otherwise
Modules 12 CS6P-255P
6 CS6P-235PX To Utility
National
Grid
Note;additional
disconnect may be
required between
Enphase Engage 6#10 3#8 these devices if
remanafactured 4 Hot/2 neutral+1 2 Hot/1 equip utility T,�
p mandated by local M
interconnect cable+ #6 equip d/GEC ground/GEC+1#8 3#6
q p neutral utility. fu have 2 Hot/1 Neutral Meter
#6 equip gnd/GEC In l"PVC/EMT In F PVC/EMT identical fusing as In 1"PVC/EMT
100 Amp specified below
Main Lug L-Gate 120
W100A PV
8 \114
buss 4 c
PV sub monitor, 2 Hot/1 Neutral+1
12 CS6P-255P Nema 3R panel with equip ground 60 amp Supply Side
Modules
terminal 2-2 pole 20 cellular In I"PVC/EMT disconnect connection
Label#6
With I Box(es) amp connection 40 A fuses (
Enphase (Soladeck) breakers to (Label#2 applied)
M215 micro I X 15 or monitoring &5
inverter for 20 amp PV portal
each module — — monitor -- (Label#6 ----------'------- ---- applied)
breaker applied)
Label#5&
6 applied
6 CS6P-235PX
Modules DC grounding electrode conductor-#6
With I Existing
Enphase M215 Main
micro inverter Existing Building distribution
for each Grounding panel
module Enphase Electrode System Main: 100 A
Envoy PV Buss: 100 A
monitor
With cat 5e
or EOP to
homes
broadband
network
Canadian Solar Panels:
Maximum power at STC:255/235
MPP voltage:30.5/29.7
MPPcumam 8.36/8.10 r,rg. Nadeau Residence
Open circuit voltage:37.7/37.3
Short circuit current:8.92/8.62 Home 7 Webb St
Module efficiency: 15.6/14.7 SOLAR Salem,MA 01970
Maximum system voltage:600 V (978)744 2096
Maximum series fuse rating: 15 A 1.8T00.75.SOLAR
Power tolerance:0--+3% One Line Diagram
Tom Petersen
Architects Planners
Mr. Thomas J. St. Pierre, Inspectional Services Director February 1, 2016
City of Salem Inspectional Services
120 Washington Street, 3'd floor
Salem, MA 01970
Re: Solar Panel Installation—As-built Certification,Permit# 14-1682
Nadeau Residence
7 Webb Street
Salem, MA 01970
Hi Tom,
I've reviewed the as-built solar panel installation at this location to evaluate the existing roof
structure and the connection of the panels to the roof.
Criteria: Applicable codes: 8d'Edition Residential Code(2009 International Residential
Code with Massachusetts Amendments)
2001 Wood Frame Construction Manual
Design roof load: 40 psf live load, 15 psf dead load, 55 psf total load
Design wind load: 110 mph,35 psf; Exposure Category `B'
My findings are as follows.
1. The new solar panels will imply an additional dead load of 3 psf. The existing roof structure
(2x6 roof rafters @ 24"o.c., with 2x8 hips and ridge, span =+/- 12'-3") is overspanned and not
sufficient to bear this additional load. In order to supplement the existing structure at the roof
plane receiving new solar panels,we have sintered new 2x6 rafters alongside each existing rafter.
Connection to existing rafters shall be 10d common nails(3"x 0.148") staggered @ 16"o.c.
2. The solar panels are attached to the roof with the SolarMount-1 rack system by UNIRAC. The
rack system,roof connections and connection spacing are rated for 110 mph. This project
requires the larger Solar Mount 1-2.5 beam (2.5"high)and spacing of flange foot connection to
roof at 48"o.c. maximum.Flange footing connections to the rail are not required to be staggered.
The flange foot connections to the roof are 5/16"diameter x 4" long lag bolts.
1 therefore certify that the actual installation complies with the applicable codes and design loads
mentioned above and is acceptable for approval. Please let me know if you have any questions
on this information. Thanks!
ED Ape
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Tom Petersen i N u�
hF447'H OF MPSSP
Cc: Kelcy Pegler,Roof Diagnostics
6 Country Lane•Howell,New Jersey 07731 •Telephone 732-730-1763,Fax 732-730-1783
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