HomeMy WebLinkAbout105 Sisters Circle - electrical permit solar wolft-
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BOARD OF FIRE PREVENTION REGULATIONS
APPLICATION FOR PERMIT TO PERFORM ELECTRICAL WORK
All wo* lo bc FErformcd in accrtdrcc with thc M.$!chu!ctB Elcctdcrl Cod. (MEC), 52? CMR l?.m
(PLEASE PNNT IN INK OR TYPE ALL INFORMANON)D.te: 3-17-22
Clty or Town of: YARMOUTH To the Inspecror of Wires:
spplicstion thc udcrsigndEv- DodA;aIn dhcr perform thc elcctrical work dcacnH bclow
(Strcet & Numbcr)105 Sisters Circle, Yarmouthport, MA 02675
or Tenrllt relephonc No. 50lAj3i0iz![8
't Addres! 105 Sisters Circle, Yarmouthoort. MA 02675
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Estirnated Valuc ofElcctrical lVork: 100s4 (Whso rcquircd by municipal policy.)
work !o Stsn Irupectioas b bc rrqurstcd in erdstrcc with MEC Ruls 10, snd t4on cotrplc'ion'
INSURANCf, COVERAGE: Unlcss waivcd by the owucr, m pefldt for thc pcrformrncc ofclectrical work may iesue unlcss
th€ liccncec provides proof of liability ilsurlnce incfuding 'corrplctcd opcrarioo" coveragc or its substsstial €quivalarl The
undersigned certifies that such covcragc is in frce, nrd has cxhibitcd proof of same to thc pemit issuing officc.
CHECK ONE: INSURANCE C BOND E oTHER E (sp""try,)
I ccrdly, andcr ttu Nw end pcaaltia ofpaJuy, thd thc hlontt lo,t on thb wlkaion b tuc and coallctc.
FIR,M NAME:
Owncr/Agctrt
KVAo.No. of Recessrd Llmhdrat
KVAGrDerstor!No. of Lumhdre Oudc!
SwimEhg Pool tr-D trNo. of Lumlndrer
No. of ZonerAIARMSNo, of Oll Bum€r!No. of Rccsptr.lc O[deti
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PERMIT FEE: 8
SlSIr ture Telephorc No.
Llc. No.:_22593A_
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Licenree:Slglrturr LIC. NO.:
Tct. No.: 508-538-9445( lf qplicobb.AIL TcL No.:-Addre3tr Lic. No-
'Pcr M.G.L. c. 147,3. 57{l , sccurity wort Equircs Dcprmncnt ofPublic Safay 'S" Liccnsc:
OWNER'S INSURANCE WAll'ER: I IIn rw8rE tfut lhe d*: not hove ttr liabilitYLicemce
law. By my signstrE bclow, I hrrEby wriv€ thiE rt$rircmcal I am thc
ia thc liccr*c tlonber Bus.
rcquird by
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EISSUES THE
REGISTERED MASTER EUECTRICIA.:,,:' :.:
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ZUIDEMA
, MA 01590
RGY, INC
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07131 726517
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-\
rT EV
ENGINEERS
projects@evengineersnet.com
http ://www.evenglneersnet.com
27 6-220-0064
3/2712022
This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of
the PV system to existing roof framing. From the field observation report, the roof is made of Asphalt Shingle
roofing over roof plywood supported by 2X10 Rafters at 16 inches. The slope of the roof was approximated to
be 37 degrees.
Design Criteria
Code 2015 tRC (ASCE 7-101-CMR 780 9th Ed
I
Dr 10 psf
DPV 3 psf
Lr 20 psf
S 30 psf
Risk category
lf you have any questions on the above, please do not hesitate to call
STRUCT
ONL
Sincerely,
(component and Cladding)
V 141 mph
Exposure B
Roof Dead load
PV Dead Load
Roof Live Load
Ground Snow
VINCENT
MWUMVANEZA
ctvtL
OF
ONAL
th
RE: structural certlflcatlon for lnstallatlon of Resldential solar
JASON BERRY:105 SISTERS ClR, YARMoUTH PORT, MA 02675
Attn: To Whom lt May Concern
After review of the field observatlon data and based on our structural capacity calculation, the existing roof
framing has been determined to be adequate to support the imposed loads without structural upgrades.
Contractor shall verify that existing framing is consistent with the described above before install. Should they
find any discrepancies, a written approval from SEOR is mandatory before proceeding with install. Capacity
calculations were done in accordance with applicable building codes.
Wind Load
Vincent Mwumvaneza, P.E.
EV Engineering, LLc
oroiects@evengineersnet.com
http://www.evengineersnet.com
-
EV
ENGINEERS
projects@evengineersnet.com
http ://www.evengineersnet.com
27 6-220-0064L.
-Structural Letter for PV lnstallation
3/21./2022
Job Address: 105 SISTERS CIR
YARMOUTH PORT, MA 02575
Job Name: JASON BERRY
Job Number: 22O32UB
scope of Work
This Letter is for the existing roof framing which supports the new PV modules as well as the attachment of
the PV system to existing roof framing. All PV mounting equipment shall be designed and installed per
manufacturer's approved installation specifications.
Table of Content
Sheet
Cover
Attachment checks
Snow and Roof Framing Check
Seismic Check and Scope of work
Engi neering Calculations Summary
1
2
3
4
2o1s rRc (AscE 7-10)-cMR 780 9th Ed
Dr 10 psf
DPV 3 psf
Lr 20 psf
S 30 psf
(component and cladding)
V 141 mph
Exposure B
References
NDS for Wood Construction
STRUCT
ONL
Sincerely,MWUMVANEZA
ctvtL
OF
ONAT
7h
Code
Risk categorv
Roof Dead Load
PV Dead Load
Roof Live Load
Ground Snow
Wind Load
Vincent Mwumvaneza, P.E.
EV Engineering, LLC
proiects@evengineersnet.com
htto://www.evengineersnet.com
VINCENT
EV
ENGINEERS
projects@evengineersnet.com
http://www.evengineersnet.com
27 6-220-0064I-
-wind Load cont,
Risk Category =
Wind Speed (3s gust), v =
Roughness =
ExPosure =
Topographic Factor, Kz] =
Pitch =
Adjustment Factor, )r =
141 mph
ASCE 7-10 Table 1.5-1
ASCE 7-10 Figure 25.5-1A
ASCE 7-10 Sec 26.7.2
ASCE 7-10 Sec 26.7.3
AscE 7-10 Sec 26.8.2
B
B
1.00
37.0 Degrees
1 ASCE 7-10 FiBure 30.5-1
ASCE 7-10 Figure 30.5-1
where a: 10% of least horizontal dimension or 0.4h, whichever is smaller, but not less than 4% of least
horizontal dimension or 3ft (0.9m)
Upltft (0.5w1
Pnet30=
Pnet = 0.6 xlx KZTx Pnet3o)=
DownDressure (0.6w1
Pnet30=
Pnet= 0.6xtrx KzT x Pnet3o)=
Rafter Attachments:0.6D+0.6W {CD=1.61
Connection Check
Attachement max. spacing=
zone 1 (psf)
-29.7
fl.44
zone 1 (pso
32.5
79.52
zone 2 (psfl
-35.8
27.49
zone 2 (psf)
32.5
t9.52
zon€ 3 (pso
-35.8
2r.49
zone 3 (psf)
32.5
79.52
Figure 30.5-1
Equation 30,5-1
Figure 30.5-1
Equation 30.5-1
LaB Screw Penetration
Prying Coefficient
Allowable CaPacitY=
Table 12.2A - NDS
DFL Assumed
ur
t-------r
3.60 ft
5/16" Lag Screw Withdrawal Value=
4ft
256 lbs/in
2.5 in
t.4
760
0.5D+0.6W DPV+0,6W
Zone Trlb width Area (ftl Upllft (lbsl Down (lbsl
L 4 11.0 176.5 247.7
z 4 11.0 216.6 247.7
3 3 8.3 162.5 185.8
Max= 2L6.5 < 760
coN Ecflor ls ox
1. pv seismic dead weight is negligible to result in significant seismic uplift, therefore the wind
uplift governs
2. Embedment is measured from the top of the framing member to the tapered tip of a lag screw.
Embedment in sheading or other materialdoes not count.
!Ialhr
-
EV
ENGINEERS
proiects@evengineersnet.com
http://www.evengineersnet.com
276-220-0064
Vertical Load Resisting System Design
Roof Framing
Load Case D[+0
Pg= 30 psf
Ce= 0.9
q= 1.1
l, = 1'0
Max Length, L =
Tributary Width, W, =
Dr=
PvDL =
.6W
7-10, Section 7.2
7-lO ,Iable 7-2
7-10, Table 7-3
7-10, Table 1.5-1
ft
16 in
10 psf 13.33 plf
3 psf 4 plf
s0 plf
1131 lb-ft
3608 lb-ft
ASCE
ASCE
ASCE
ASCE
14.3
Pr
Ps
Ptmin
2t psf
25.0 psf
25 psf
0.55
18.3 plf
Cs
Pnet+ Pevcos(e)+PDr= 43.4 plf
Max Moment, M, = 985 lb-ft conservatively
Pv max Shear 247.7 lbs
Max Shear, Vu=wt /2+Pv Point Load = 372 lbs
Load Case: DL+o.7s(0.6W+Sl)
0.75(Pnet+Ps)+ P*cos(0)+Po,=
Mao*n=
Mallowable = Sx x Fb' (wind)=> 1131 lb-ft OK
792 lb-fi OK
Ps+ Pr"cos(0)+PoL=
Mao*n=
Mallowable = Sx x Fb' (wind)=
35 plf
792 lb-ft
2s93 lb-ft
Max Shear, V,=wVz+Pv Point Load = 372 lbs
Member capacity
2X10 cL cr ci cr KF 0 l Adjusted value
Fb 1000 psi 1.0 1.1 1.15 2.54 0.85 0.8 1265 psi
F,=180 psi N/A N/A 1.0 N/A 2.88 0.8 180 psi
E=1700000 psi N/A N/A 1.0 N/A N/A N/A N/A 1700000 psi
620000 psi N/A N/A 1.0 1.76 0.8s N/A 620000 psi
DF-L No.1
Depth, d =
width, b =
Cross-Sectonal Area, A =
Moment of lnertia, l- =
Section Modulus, So =
Allowable Moment, Mr1= Fo'$,o =
Allowable 5hear, V",. = 2/3F,'A =
9.25 in
1.5 in
13.875 in2
.4
98.9316 rn
.l
21.3906 rn
0.30 < 1
o.22 < t
Satisfactory
Satisfastory
L/7
Load Case: DL+S
Rafters
Design Value
1.0
o.75
N/A
22s4.9 lb-ft
1665.0 lb
DCR=M,/M,rr =
DCR=V"/Varr =
E.
-r
EV 27 6-220-0064
-
ENGINEERS
Siesmic Loads Check
Roof Dead Load 10 psf
% or Roof with Pv
Dpv and Racking
Averarage Total Dead Load
lncrease in Dead Load
t7%
3 psf
10.5 psf
2.0% oK
The increase in seismic Dead weight as a result of the solar system is less than 10% of the existing structure and
therefore no further seismic analysis is required.
Limits of Scope of work and Liabilitv
We have based our structural capacity determination on information in pictures and a drawing set titled PV
plans -JASON BERRY. The analysis was according to applicable building codes, professional engineering and
deslgn experience, opinions and judgments. The calculations produced for this structure's assessment are only
for the proposed solar panel installation referenced in the stamped plan set and were made according to
generally recognized structural analysis standards and procedures.
projects@evengineersnet.com
http://www.evengineersnet.com
1/7
JASON BERRY
NEW GRID-INTERACTIVE PHOTOVOLTAIC SYSTEM
DC SYSTEM SIZE ( ro.sss K\M)
SOLAR WOTF
inc.
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PEfuVIT DEVELOPDR
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DEgGNER
COVTR PAGE
PV-1
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SYSTEM DETAILS
DESCTmON Nil GruO{ffiUryE HfrOVOLTNC
YNEM WM NO UNERY MMGE
OC UNNG OF sYftM SYSEUSril0.S M rcSC
9.92 s
AC O[, ORREE 4!.23 A
NO. OF MOOUES (3r)suNffiRsRpl.33W3wsMMULE
to. oF IwEms (31) SUNrcreR Sm-pl.sAu+rcHmffi
rctm oF coiNEmoN UTE SIDE Tf IT NE iSP
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SITE DETAILS
-15.C
ASHUE 2% HIGH 28.C
GROUND SNW LqO 30 PsF
WINO SEEO 141 f,fr
rosK qrcoRY tr
WINO qTSURE qrcORY a
GOVERNING CODES
TNERMnM aULqreffi (EC), A15
rmRMnow reslDENtra c@E (rc). ar5
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SHEET INDEX
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ffR PAGE
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SITE MAP N.T.S
VICINITY MAP
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WIND FLOW MAP
AC UNNG OF ffiT
sTRUmUl)Eilts
ELEM4UNEMqN
GENERAL NOTES
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JASON BERRY
105 SISTERS CIR,
YARMOUTH PORT, MA 02675
REVISIONS
EM Es(:lmd
,<
+
CONDUTT RUN
(E)UnLrrY METER
(PEDESTAL)
(N) SO|-AR LOAD CENTER
(N)SMART METER
(N)AC DTSCONNECT
(FUSIBLE)
(E)MAIN SERVICE PANEI
(INSIDE HOUSEJ ROOF 1
PV ARRAY
SOLAR WOLF
ffi.
(NO:&7t.@ntwBrtcun,MUri,
PEruTI'DEVT]LOPER
MTE W
OE9GNER
RMT PL{N
PV.3
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MODULE TYPE, DIMENSIONS & WEIGHT
NUMBER OF MOOULES = 31 MODULES
MODULE TYPE = SUNPOWER SPR- X21-33$BLK-S,AC 335w SOLAR MOOULE
WEIGHT = 45.5 LBs / 20.6 KG.
MODULE DIMENSIONS = 61.3'x 41.2'=17.53 SF
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1. THE DC AND AC CONNECTORS OF THE SUNPOWER SPR-X21.33'BLK-D,AC ARE LISTED TO MEET
REOUTREMENTS AS A DTSCONNECT MEANS AS ALLOWED BY NEC 690.1s(A) AND NEC 690.17(E).2, MICROINVERTER BRANCH CIRCUIT CONDUCTORS ARE MANUFACTURED ENPHASE O CABLES LISTED FOR USE
IN 2OA OR LESS CIRCUITS OF ENPHASE IO MICROINVERTERS. THEY ARE ROHS. OIL RESISTANT, AND UV
RESISTANT. THEY CONTAIN AWG CONOUCTORS OF TYPE THHN/THW{.2 DRY/WET AND CERTIFIEO TO UL3OO3
AND UL 9703. THE CABLE'S DOUBLE INSULATED RATING REOUIRES NO NEUTRAL OR GROUNOED CONDUCTOR,3, UNGROUNDED SYSTEM DC CONDUCTORS SHALL BE COLOR.CODED AS FOLLOWS, DC POSITIVE SHALL BE RED
(OR MARKEO RED) AND OC NEGATIVE SHALL BE BLACK (OR MARKED BLACK)4. ALL METAL ENCLOSURES. RACEWAYS, CABLES ANO EXPOSED NONCURRENT.CARRYING METAT PARTS OF
EOUIPMENT SHALL BE GROUNDED TO EARTH AS REQUIRED BY NEC 250.4(8) AND PART III OF NEC ARTICLE 250
AND EOUIPMENT GROUNDING CONOUCTORS SHALL BE SIZED ACCORDING TO NEC 690.45, THE GROUNDING
ELECTRODE SYSTEM SHALL ADHERE TO 8S0.47(B) AND 250,109, THE DC GROUNDING ELECTRODE SHALL BE
stzED AccoRDtNG TO 250.1665" AN AODITIONAL ARRAY GROUNDING ELECTRODE SHALL BE INSTALLEO IN ACCORDANCE WITH NEC SECTIONS
250.52 ANO 250.54 UNLESS THE ARRAY STRUCTURE IS SUITABLE TO SERVE AS A GROUNDING ELECTRODE AS
PER NEC SECTION 250.2, THE LOAD SERVED BY THE ARRAY IS INTEGRAL WTH THE ARRAY, OR THE PREMISE'S
EX|STING WRTNG ELECTRODE tS LOCATED WtrHtN 6FT, AS PER NEC SECTTON 690.47(D)6 PVSYSTEM OISCONNECT SHALL BEAVISIBLE KNIFE-BLADE TYPE DISCONNECTTHAT IS ACCESSIBLE AND
LOCKABLE BY THE UTILITY, THE DISCONNECT SHALL BE LOCATED WITHIN 1O FT OF UTILITY METER.7. POINT-OF-CONNECTION IS ON THE SUPPLY SIDE OF SERVICE OISCONNECT, INSIDE PANELBOARD ENCLOSURE
USING UNUSEO TERMINALS, TERMINALS THAT ARE SUITABLE FOR OOUBLE LUGGING, OR USING OTHER
LOCALLY-APPROVED METHODS AND HAROWARE, IN COMPLIANCE WITH NEC 705,12(A).8, UTILITY HAS 2+HR UNRESTRICTED ACCESS TO ALL PHOTOVOLTAIC SYSTEM COMPONENTS LOCATED AT THE
SERVICE ENTRANCE,9, MOOULES CONFORM TO AND ARE LISTEO UNOER UL 1 703.
1 O. CONDUCTORS EXPOSED TO SUNLIGHT SHALL BE LISTED AS SUNLIGHT RESISTANT PER NEC ARTICLE 300,6 (C)
(1) AND ARITCLE 310.8 (O).
1 1. CONDUCTORS EXPOSEO TO WET LOCATIONS SHALL BE SUITABLE FOR USE IN WET LOCATIONS PER NEC
ARTTCLE 310.8 (C).
CROUNDING NOTES.
PV MOOULE ANO RACXING GROUNONG AS PER PPROVEO INSTALLATION PRACTICE
AND IN LINE WITH MANUFACTURE'S GUIDELINES.
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ELECTRICAL CALCUL{TIONS:
I. CURRENT CARRYING
(A) BEFORE SOLAR LOAD CENTER:
AMBTENT TEMPERATURE - (28+22)'C=50C .....NEC 310.15(B)(3)(c)
TEMPERATURE DERATE FACTOR - (0.82) ..............NEc 310.15(B)(2)(a)
GROUPING FACTOR - (0.8) .................................NEC 310.15(BX3)(a)
CONDUCTOR AMPACIW:
= (lNV o/P CURRENT ) x 1.25 / A.T.F / G.F ...NEC 690.8(8)
= [( 11 x 1.33) x 1.251t 0.821 0.E
=27.87 A
SELECTED CONDUCTOR - #10 THWN-2 ...NEC 310.15(8X16)
(B) AFTER SOLAR LOAD CENTER:
TEMPERATURE DERATE FACTOR. (1)
GROUPTNG FACTOR- (1)
CONDUCTORAMPACTTY= OOTAL ltw o/P CURRENT) x 1.25 t 1 t 1 ...NEC 090.8(8)= (31x1.33)1x1.25/1/1
= 51.537A
SELECTED CONDUCTOR - #6 THWN-2 ...NEC 310.15(8X16)
s. PvoVERCURRENTPRoTECTION ...NEC690.9(8)
= TOTAL INVERTER O/P CURRENT x '1.25
= (31 x 1.33)x 1.2s = 5'1.537 A
SELECTED OCPO IS 60A
SELECTED EQUIPMENT GRoUNDING coNDUCTOR (EGC) = #10 rHwN-z ...NEc 25o.122(At
EgUIPMENT ELEVATION VIEW WARNING A
POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING
SOURCES WITH DISCONNECTS LOCATED AS SHOWN
LOAD CENTER
(ouTsrDE HousE)SERVICE PANEL
(INSIDE HOUSE)
OISCONNECT
METER
FUSIBLE
(ouTstDE HousE)
(ouTsIDE HOUSE)METER
(PEDESTAL)
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(N)AC DEONiF(ruSe)(qur sauG PeB
onsoE B@E)
SITE ADDRESS: 105 SISTERS CIR, YARMOUTH PORT, MA 02675
soLAR DC DIscoNNEcr & INVERTER LABEIS AC CoMBINER PANEL LABET-S UTILITY METER SERVICE PANEL LABEL
SOIAR PV SYSTEM EQUIPPED
WITH RAPID SHUTDOWN
TURN RAPIO SHUTDOW\
SWTCH TO THE
"OFF. POSNON TO
SHUTDOWN PV SYSTEM
AND REDUCE
SHOCK HAZAROIN ARRAY
CONDUIT LABELS
WARNING
I oualrorrnsor,ncn 2[
WARNING
TIITS IS M^lrl I OF 2IIITII
MAIN 2 OF 2 LOCATED OUTSIDE
ms sEtue I9 L30 sEnED Er a w sYwv wIRMO Sfltlmm. lMRmfS LOCAmD Ol I@F
F BAffiED BREAreR MSEM M N(N RllmAE
NOrulrumo1
WARNING
ELf,frNrcSKrcK f,MARDDoNFm-uclru
MNMNAI-s ON AOT{ LINE AND rcADSDIS UY Tf, EMRGIEDN M OEilmmloN
WARNING
NO USDT SETUCEABLE AARN MDEmmam atmnrozED snu0 momEmx assIsANcE
WARNING
AC VOLTAGE =
MAX FUSE: 604
MAX CURRENT:
240V
51.544
WARNING
DL!:CTItCStr(rcK ti&AU
NID E CONDICTOTS OF flU6
PHMOVOIXATC SYffiM ANE
WGtrOBDED AND MY BE qDRCUF'
NOTICE
THIS SYSTF,M IS RQUIPPED WTTH RAPII)
SHUTI,OWN ROOtr.TOP INVERTERS WILL
DF.BNERCISE AT SERVICE PANEL OIJTAGD CAUTION
DO NOT DISCONNECT
TNDER LOAI)
PHOTOVOLTAIC SYSTEM
EQUIPPED WTTH RAPID
SIruTDOWN CAUTION
PITOTOVOLTAIC AC SOT,RCE
NOTICE
AC COMEINER AIID DATA AQI'ISITION.I'O NOI AI'DI'ADS.
I'O NOT TOUCH TERMINAIf.
LINE AND II,AD SIDE MAY BE ENERGIZED
I.rl OPEN FOSITION.
CAUTIONEMERGENCY CONTACT
888-878-4396
LABEL
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