HomeMy WebLinkAbout55 Marshside Dr - electrical permit solar wolfT
R E c E v DE
MAR A
B[JILbIN6 D
By
REC EIVED
},rpa^ra l'lAY - 3J.ruit.6
ARD OF FIRE PR
APPLICATION FOR PERMIT TO PERF M ELECTRICAL WORK
All crorl to bc pcrfonncd in accod&cr wilt lhc Mrr$cbu!.tE ELclticllCo&lMEC). 52? CMR 12.00
Dete: 3-17-22
City or Town of: YARMOUTH To the Inspector of l{ires:
By this applicadon thc rmdcnigncd giv* noticc ofhis or hcr intcntim to perform thc clcctricsl wort dcscrib€d b€low
Locrdon (Street & Number) 55 MARSHSIDE DRIVE ARMOUTHPORT. MA
Own€r or Tenrnt JANIS BRI NKER Tclephonc No.
Owner'r Addrers SAIVIE AS LOCATtoN
I! thlr pcnrlt ln cooJrrctloD rlth . b[lldrg pcnDft? VG, E ffo n (Check Approprlrt. Bor)
PurDo.. of Bulldltre Udlltr Althorlzrtlon No.
Ertldtrg S€rvlc! _ Ampt
N!!SI!lg!
-
AmPs
/ Voltt Ovrrhe*l !No. of MatrnUtrd8rd
Urdgrd/ Voltr Ovcrherd No. of Mcters _
Nrmber of Fecders rnd Ampaclty
Locrdor rtrd Ntture of Ptoposed Electrlcd Workr install of 14335wDane to total 4 69kw rooffoo svstem
with smart meter
Occupstrcy 8trd Fcc Chcked
-
Ofricial Use Only
permit f.,to. 6 LD {.ZZ_O S
tn71 laarc blsnl
Vires.
EstinBted Valuc of ElccEical Work; a858 80
Atteh &itioial derail if desired, or dJ rcquired by th. I8p.dor of lyires
(Whcn rcquircd by muniEipal policy.)
Work to Start Inspectioos o bc rcqucstcd in scoordrBce with MEC Rule 10, and tpon cofipletion.
INSURAflCE COVERAGEI Unlcss waivcd by the owucr, no pcrmit for the performancc of clectrical work lltay i33n€ unl€ss
ths lic.nrcc proyidcs proof of liability iflsuranc€ itrcluding 'cornplclrd operation" covcrage or irs substaotial equivalert. Thc
undcreigncd ccrtifies that such covcragc is in force, and has cxhibitcd prcof of ssme to thc p€rmit issuing officc.
CHECK ONE: TNSURANCE E BONO E Orssn E (SFciry:)
t cctdly, mtcr the Nas ead perufra ol pcfltty, thsl th. hlonatbn ot this swliaioa h tuc ond corrtllde.
FIRM NAME:
Licenrce:SiSnrtur.
(U applicablz.''exempt" in the licente ntnber linc.)Bus. Tel. No.: 508-538-9445
Addreu: 771 Washinqton Street. Aubum, IIA 01501 .{lL Tel. No.
'Per M.G.L. c. 147, s.57{1, sccurity work rcquir6 Dcplrtnc ofPublic ssftty *S" Liccnsc: Lic. No
OWNER'S INSURANCE WAIYER: I am awarc that the Licfrl*e doet not how thc liability insurancc coveragc aormally
requircd by law. By my signaturc bclow. I b€r€by wtiYe lhis rrquircmeflt. I am thc (check onc
l otrl
KVA
No. of
Tratrrformcr!No. of Cell.-S[!p. (P.ddl€) FrtrsNo. of Recested L[mlntlres
KVAGen€ratorsNo. ofHot TubrNo. of LumiDdre Oudet!
No. of Entergcrcy L8ttltrl
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crrd.
Above
crod.No. of Lumlndrcr
FIR,E AIARMS No. of ZotretNo. of Oll BumcrrNo. of Rccephcle Outlets
No. ofDetection EldIrldrdrs D€vlcesNo. of Glr BlrD€rrNo. of Switchc!
No. of Alertirg DevlcesNo. of Air Cond.TotdTon!No, of Rmg.s
No. of Sclf-Contrined
Detectior/Al€rd.trr Dcvlce!No, of Wrlt€ Ditpotcrr He.t PumpTotrb;
KWtiltroEri
r.ocer! [j,!jS" g 06..Sprc./-Arca Ilerdrg KwNo. of DLhwerherr
kuiltv Svstims: r
No. "of Devices or EodvdentHerdEg Appliroc.t KWNo. of Drycrt
No. of
Brlhsts
l!.o. of
SlcDr
Drtr Wlrlrg:
No, of D€Yicer or EqdYd€ntKWNo. of Wrter
Ilerten
No. ofNo. EydroDlrrlgc Brthtubr No. of Motor3 Totrl HP
OTHER:
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LIC. NO.: ^rFq3A
LIC. NO.:
PERMIT FEE: $
JANIS BRINKER
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MODULE TYPE, DIMENSIONS & WEIGHT
NUMBER OF MODULES = 14 MODULES
MODULE TYPE = SUNPOWER X21-33SBLK-D-AC 335W SOLAR MODULE
WEIGHT = 45.5 LBS / 20.6 KG.
MODULE OIMENSIONS = 61.3'X 41.2'='17.53 SF
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ELECTRICAL CALCULATI ONS:
I. CURREN'TCARR NG CONDUS|OR
(A) BEFORE AC COMBINERPANEL :
AMBIETIT TEMPEFIATURE - (28+22)"c=50c .....NEC 310.1s(B)(3)(c)
TEMPERATURE DERATE FACTOR - (0.82) ..............NEC 310.15(BX2Xa)
GROUPING FACTOR - (0.8) ...NEC 310.15(B)(3Xa)
CONDUCTOR AMPACITY:
= (lNV O/P CURRENT ) x 1.25 / dT.F / G.F ...NEC 690.8(8)
= ( 7 x 1.3i!) x 1.251 I o.EA 0.8
= 17.74 A
SELECTED CONDUCTOR-#10THWN-2 ...NEC 310.15(8X16)
(B) AFTERACCOMBINERPANEL:
TEMPERATURE DERATE FACTOR. (1)
GROUPTNG FACTOR- (1)
CONOUCTOR AMPACTTY= CTOTAL lrw O/P CURRENT) x 1.25 / 1 / I ...NEC 690.8(8)= (14x 1.3311\1.2511t1= 23.27 A
SELECTED CONDUCTOR - #10 THWN-2 ...NEC 310.15(8X16)
e. PV OVI:R CURRENT PROTI.TCTION ...NEC 690.9(8)
= TOTALINVERTERO/PCURRENTx1.25= (14x1.33)x1.25=23.27 A
SELECTED OCPD IS 3OA
SELECTEO EQUIPMENT GROUNDING CONDUCTOR (EGC) = #10 THWN-2 ...NEc 250.122(A)
GENEBAL EI,ECTRICAL NOTES:
1. THE DC ANO AC CONNECTORS OF THE SUNPOYVER SPR.X21.3BNBLK.TAC ARE LISTED TO MEET
REQUTREMENTS AS A DISCONNECT MEANS AS ALLOWED BY NEC 690.15(A) AND NEC 690.1 7(E).2 MICROINVERTER BRANCH CIRCUITCONDUCTORSARE MANUFACTURED ENPHASE O CABLES LISTED FOR USE
IN 2OA OR LESS CIRCUITS OF ENPHASE IO MICROINVERTERS. THEY ARE ROHS, OIL RESISTANT, AND UV
RESTSTANT. THEY CONTAIN AWG CONDUCTORS OF ryPE THHN/THWN-2 DRY /VET AND CERTIFIED TO U13003
AND UL 9703. THE CAALE'S DOUBLE INSULATED RATING REQUIRES NO NEUTRAL OR GROUNDED CONDUCTOR.3, UNGROUNDED SYSTEM OC CONDUCTORS SHALL BE COLOR.CODED AS FOLLOWS. DC POSITIVE SHALL BE RED
(OR MARKED RED) AND DC NEGATIVE SHALL BE BLACK (OR MARKEO BLACK)4. ALL METAL ENCLOSURES, RACEWAYS, CABLES AND EXPOSED NONCURRENT.CARRYING METAL PARTS OF
EOUIPMENT SHALL BE GROUNDED TO EARTH AS REOUIRED BY NEC 250.4(8) AND PART III OF NEC ARTICLE 250
AND EQUIPMENT GROUNDING CONDUCTORS SHALL BE SIZED ACCORDING TO NEC 690.45, THE GROUNDING
ELECTRODE SYSTEM SHALL ADHERE TO 690.47(8) ANO 250.169. THE DC GROUNDING ELECTRODE SIIALL BE
stzEo AccoRDlNG To 250.1665. AN ADOITIONAL ARRAY GROUNDING ELECTRODE SHALL BE INSTALLED IN ACCORDANCE WITH NEC SECTIONS
250.52 AND 250.9 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
EXTSTING WRING ELECTROOE lS LOCATED WTHIN 6FT, AS PER NEC SECTION 690.47(D)6 PV SYSTEM DISCONNECT SHALL BE AVISIBLE KNIFE.BLADE TYPE DISCONNECTTHAT ISACCESSIBLEAND
LOCKABLE BY IHE UTILITY, THE DISCONNECT SHALL BE LOCATED WITHIN 10 FT OF UTILITY METER.7. POINT-OF-CONNECTION IS ON THE SUPPLY SIDE OF SERVICE OISCONNECT, INSIOE PANELBOARO ENCLOSURE
USING UNUSEO TERMINALS, TERMINALS THAT ARE SUITABLE FOR DOUBLE LUGGING. OR USING OTHER
LOCALLY-APPROVEO METHOOS AND HARDWARE, IN COMPLIANCE WITH NEC 705,12(A),
8. UTILITY HAS 2+HR UNRESTRICTED ACCESS TO ALL PHOTOVOLTAIC SYSTEM COMPONENTS LOCAIED AI THE
SERVICE ENTRANCE,9. MODULES CONFORM TO AND ARE LISTED UNDER UL 1703.
10. CONDUCTORS EXPOSED TO SUNLIGHT SHALL BE LISTED AS SUNTIGHT RESISTANT PER NEC ARTICLE 300.6 (C)
(1) AND ARnCLE 3',|0.8 (O).
I 1. CONDUCTORS EXPOSED TO WET LOCATIONS SHALL BE SUITABLE FOR USE IN WET LOCATIONS PER NEC
ARTICLE 310.8 (C).
(iROl-tNDING NO'I'ES,
F' MOOUtr AND RACXING GROJNONG AS P€R APPR@EO INSIAUANOil PRACTICE
ANO IN LII,IE wlTH MNI'FACIURES GUIOELINES.
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SOLAR LOADMAIN SERVICE (OUTSIDE HOUSE)(INSIDE HOUSE)
AC DISCONNECT,
FUSIBLE
(ouTsrDE HousE)SMAR.TUTIUTY(OUISIDE HOUSE)(ouTsrDE HousE)
/\WARNING /!\
POWER TO THIS BUILDING IS ALSO SUPPLIED FROM THE FOLLOWING
SOURCES \)VITH DISCONNECTS LOCATED AS SHOWN
(N)SMART METER
DISCONNECT
(N) SOLAR LOAD CENTER METER
HOUsE)
SERVICE PANEL
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(E)MAIN
(INSIDE
PV ARRAY ROOF 1
SITE ADDRESS: 55 MARSHSIDE DRIVE, YARMOUTH PORT, MA 02675
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S6LAR DC DISCSNNECT & INVERTER LABELS AC COMBINER PANEL LABELS UTILITY METER SERVICE PANET,I,ABEL
SOLAR PV SYSTEM EQUIPPED
WITH RAPID SHUTDOWN
TI'RN RAPIO SHUIDOWN
SWITCH TO THE"oFF" POSInON TO
SHUTOOIIN PV SYSTEMAND REDUCE
SHOCK HAZARO
IN ARRAY
CONDUIT LABELS
WARNING WARNING
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WARNING
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WARNING
No ur-Ei3Eiiidilirl^irs lNsmMMAO AWOUf, DSERVrcE NOVTDEMT ASIfrNCS
trM.ARD
WARNING
AC VOLTAGE :
MAX FUSE: 5OA
MAX CURRENT:
240V
23.2AA
WARNING
EL}IITIC 6tr@( EMNDTM M CONDUqOAS OFTHS}rorcvoLTAIC ffSftM AIEWGf,OMMAMUY AEMXGIM
NOTICE
TIIIS SYSTEM IS NQIMPED WTTH RAPII'
SITUTIX)WN ROOTTOP INVERTERS WN,L
Dr-ENERGISE AT SDRVICE PANDLOUTACE CAUTION
TX) NOT DISCONNECT
IJNDER LOAI)
PHOTOVOLTAIC SYSTEM
DQUIPPEDWTTH RAPII)
SHUTDOWN CAUTIONEMERGENCY CONTACT
888-878-4396
NOTICE
AC COMBINER AND DATA AQIJTSITION.IX) NOTAI'D LOAI'S- IX)NOTTOUCHTERMINALS.
LINE AND LOAD SIDE MAY BE ENERCIZED
IN OPEN FOSITION.
CAUTION
LABEL
THIS IS M IN I OF 2 WTTH
MAIN 2 OF 2 LOCATED OLNSIDE
PHOTOVOI,TAIC AC SOURCD
SOLARCIRCUT
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JANIS BRINKER
55 MARSHSIDE DRIVE,
YARMOUTH PORT, MA 02675
RtrVISIONS
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proiects@evengineersnet.com
http://www.even gi neersnet.com
276-220-0064
03/17 /2022
RE: Structural Certmcation for lnstallation of Resldential Solar
JANIS BRINKER;s5 MARSHSIDE DRIVE, YARMOUTH PORT, MA 02575
Attn: To Whom lt May Concern
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 ph/wood supported by 2X1O Rafters at 16 inches. The slope of the roof was approximated to
be 36 degrees.
After review of the field observation data and based on our structural capacity calculation, the existing rool
framing has been determined to be adequate to support the imposed loads wlthout 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.
Design Criteria
Code 2015 IRC (ASCE 7-10)-CMR 780 gth Ed
Risk catesorv ll
Roof Dead Load Dr 10 psf
PV Dead Load DPV 3 Psf
Wind Load
Roof Live Load Lr 20 psf
Ground snow s 30 psf
lf you have any questions on the above, please do not hesitate to call.
STRUC
or{ L
Sincerely,
Vincent Mwumvaneza, P.E,
EV Engineering, LLC
proiects@evengineersnet.com
httD://www.evengineersnet.com
(component and cladding)
V 141 mph
Exposure B
VIN C ENT
MWU MVAN EZA
ctvlL
OF
EV
ENGINEERS
7/7
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276-220-0064
Structural Letter for PV lnstallation
0311712022
Job Address:
Job Name:
Job Number:
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 existinS roof framing. All PV mounting equipment shall be designed and installed per
manufacturer's approved installation specif ications.
Table of Content
Sheet
Cover
Attachment checks
snow and Roof Framing check
Seismic Check and Scope of work
1
2
3
4
Code
Risk categorv
Roof Dead Load
Pv Dead Load
Roof Live Load
Ground snow
Wind Load
calculations
Dr
DPV
Lr
s
(component and Cladding)
V 141 mph
Exposure B
10 psf
3 psf
20 psf
30 psf
Reterences
Sincerely,
Vincent Mwumvaneza, P.E.
EV Engineering, LLC
proiects@evengineersnet.com
http://www.evensineersnet.com
VINCENT
MWUMVANEZA
ctvtL
7/1
Engineering
2015 rRC (ASCE 7-10)-CMR 780 9th Ed
NDS for Wood Construction
!II!r!,n EV
ENGINEERS
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Wind Load Cont.
Risk Category =
Wind Speed (3s gust), V =
Roughness =
ExPosure =
Topographic Factor, Kzr =
Pitch =
Adjustment Factor, I =
a=
141 ]nph
B
ASCE 7-10 Table 1.5-1
ASCE 7-10 Figure 25.5-14
ASCE 7-10 Sec 26.7.2
ASCE 7-10 sec 26.7.3
ASCE 7-10 Sec 25.8.2
B
1.00
36.0 Degrees
ASCE 7-10 Figure 30.5-1
3.60 ft 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)
Uollft (0.5w1
Pnet3G
Pnet = 0.5 rlx KzT x Pnetso)=
Downprersurc 10.6W)
Pnet3o=
Pnet = 0,5x lx I(zT x Pnet3o)=
Rafter A ments: 0,6D+O.6w CD
conn€dion check
Attachement max. sPacing=
zone 1 (psf)
-29.7
17.U
Zone 1 (psfl
32,5
19.52
1.61
Figure 30.5-1
Equation 30.5-1
FiSure 30,5-1
Equation 30.5-1
Table 12.2A - NDS
DFL Assumed
zone 2 (ps0
-35.8
27.49
zone 2 (psf)
32.5
19.52
Zone 3 lpsfl
-35.8
21.49
Zone 3 (ps0
32.5
19.52
Lag Screw Penetration
Prying Coefficient
Allowable CaPacitY=
4ft
265 lbs/in
2.5 in
1.4
760
0.5DrO,5W DPYr0'5W
zonc Trlb wldth Alea (ft) uplift [lbs] Down (lbsl
7 4 11.0 176.5 247.7
2 4 11.0 216.6 247.7
3 3 8.3 762.5 185.8
Max= 215.6 < 760
col{t{Eclro ls()r
,. 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 material does not count.
7h
1
5/16" Lag screw withdrawal Value=
-t
I\
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vertical Load Resisting System Design
Root Framing
Load Case: DL+S
ps+ pe,cos(0)+PoL=
Muo'rn=
Mallowable = Sx x Fb' (wind)=
Pg= 30 psf ASCE 7-10, Section 7.2
Ce= 0.9 ASCE 7-10, Table 7-2
q = 1.1 AscE 7-10, Table 7-3
l. = 1.0 ASCE 7-10, Table 1.5-1
Max Lentth, l, = 10 ft
Tributary Width, Wr = 16 in
Dr= 10 psf 13.33 plf
PvDL= 3 psf 4 plf
Pr = 21 Psf
Pnnrn. = 25.0 Psf
Ps = 25 Psf
Cs 0.557
18.9 plf
35 plf
394 tb-ft
2593 lb-ft
Conservatively
558 lb-ft OK
394 lb-ft OX
Max shear, V,=wV2+Pv Point Load = 334 lbs
Member capacity
2X10 Design Value cL cF ci c,KF 0 Adjusted Value
Fu=1000 psi 1.0 1.1 1.0 1.15 2.54 0.8 1265 psi
180 psi N/A 1.0 2.88 o.75 0.8 180 psi
E=1700000 psi N/A 1.0 N/A N/A N/A 1700000 psi
Emin 620000 psi N/A N/A 1.0 N/A t.76 0.85 520000 psi
DF-L No.1
Depth, d =
width, b =
Cross-Sectonal Area, A =
Moment of lnertia, lE =
Section Modulus, Su =
Allowable Moment, M", = Fo'S* =
Allowable Shear, V" t= 2/3Fv'A =
9.25 in
1.5 in
13.875 in'1
98.9316 in4
21.3906 inr
DCR=M,/M.rr =
DCR=V,/V"rr =
Satlsfactory
Satistactory
2254.9 lb-ft
1665.0 lb
0.15 < 1
0.20 < 1
7/7
Rafters
Load Case: Dt+0.6W
Pnet+ Pevcos(0)+PDr= 43.4 Pll
Max Moment, Mu = 482 lb-ft
Pv max Shear 247.7 lbs
Max Shear, V,=wU2+Pv Point Load = 334 lbs
load case: Dt+o.75(0.6w+Sll
0.75(Pnet+Ps)+Pe"cos(g)+PDL= 50plf
Mao*= 558 lb-ft
I
0.8s
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Siesmic Loads check
Roof Dead Load 10 psf
% or Roof with Pv
Dpv and Racking
Averarage Total Dead Load
lncrease in Oead Load
70%
3 psf
10.3 psf
1.1% Or(
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 Liabllitv
We have based our structural capacity determination on information in pictures and a drawing set titled PV
plans -JANIS BRINKER. The analysis was according to applicable building codes, professional engineering and
design 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 accordinS to
generally recognized structural analysis standards and procedures.
7h