PV-4 SLD CALCS

PV-1 : PLOT PLAN

PROJECT OVERVIEW

7.0 KW SOLAR SYSTEM

(28) SolarWolrd 250W Modules

(28) Enphase M215 Microinverters

PV-2 : ATTACHMENT LAYOUT AND DETAILS

PV-3 : FIRE SIGNS/LABELS PV-4 : SINGLE LINE DIAGRAM

SYSTEM OVERVIEW

Markings, Labels and Warning Signs.

A. Purpose: Provides emergency responders with appropriate warning and

guidance with respect to isolating the solar electrical system. This can facilitate

identifying energized electrical lines that connect the solar panels to the inverter, as

these should not be cut when venting for smoke removal.

B. Main Service Disconnect

1. Residential buildings - the marking may be places within the main service

disconnect. the marking shall be placed on the outside cover if the main service

disconnect is operable with the service panel closed.

3. Markings: Verbiage, Format, and Type of material.

a. Verbiage: CAUTION: SOLAR ELECTRIC

SYSTEM CONNECTED

b. Format:

(1) White Lettering on a red background.

(2) Minimum

3

8

inches letter height.

(3) All letters shall be capitalized

(4) Arial or similar font, non-bold.

c. Material:

(1) Reflective, Weather resistant material

suitable for the environment (use UL -

969 as standard for weather rating).

Durable Adhesive materials meet this

requirement.

C. Marking Requirements on DC Conduit, Raceways,

Enclosures, Cable Assemblies, DC Combiners, and

Junction Boxes:

1. Marking Placement, Verbiage, Format, and Type of

Material.

(a.) Placement: Marking shall be placed at every

10 feet on all interior and exterior DC Conduit,

Raceways, Enclosures, Cable Assemblies, at

turns, above and/or below penetrations, all DC

Combiners, and Junction Boxes.

(b.) Verbiage: CAUTION: SOLAR CIRCUIT

NOTE: The Format and Type of material

Shall adhere to "V. B-3b, c" of this requirement.

D. Inverters - Are Not Required To Have Caution Markings

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. WORKING CLEARANCES AROUND THE EXISTING AND NEW ELECTRICAL

EQUIPMENT WILL BE MAINTAINED IN ACCORDANCE WITH THE NEC 110.26

4. EXPOSED CONDUIT TO BE PAINTED TO MATCH ROOF COLOR

5. SMOKE ALARMS AND C02 ALARMS TO BE INSTALLED

6. STRUCTURAL MEMBER LOCATIONS ARE ESTIMATED AND SHOULD BE LOCATED

AND VERIFIED AS NECESSARY FOR LAG BOLT PENETRATIONS BY CONTRACTOR.

7. SEAL CONNECTION POINTS WITH ROOF GRADE

8. ROOF PENETRATIONS ARE SEALED WITH SCHNEE MOREHEAD 7108 SEALANT.

1. PV ARRAYS CONTAIN (28) SOLARWOLRD 250W MODULES

2. PV ARRAY WIRING TO JUNCTION BOX IS #12 AWG (ENPHASE TRUNK CABLE) WITH

FACTORY PROVIDED MC CONNECTORS.

3. PV ARRAY COMBINER/JUNCTION BOX PROVIDES TRANSITION FROM ARRAY WIRING

TO CONDUIT WIRING.

4. PV POWER SOURCE, 600Vdc, NEMA 3R RAINPROOF, 30A AC DISCONNECT

5. PROVIDE GROUND ELECTRODE SYSTEM FROM INVERTER TO EXISTING MAIN

SERVICE GROUND ELECTRODE PER C.E.C. ARTICLE 250.50 THROUGH 250.86.

6. GROUND ELECTRODE CONDUCTOR FROM INVERTER TO GROUND ELECTRODE TO

BE MINIMUM PROTECTION OF BARE ARMOR SHEATED CABLE FOR ALL CONDUCTOR

SIZES.

7. ALL GROUND CONNECTED TO MAIN SERVICE GROUND IN MAIN SERVICE PANEL.

8. CONNECTORS SHALL BE POLARIS IT-4.

9. INVERTERS SHALL BE (28) ENPHASE M215 MICROINVERTERS

10. INVERTER IS LISTED TO UL-1741 "UTILITY INTERACTIVE"

11. AC DISCONNECT IS VISIBLE OPEN, LOCKABLE, 240Vac,30A

12. EQUIPMENT GROUNDING CONDUCTORS ON AC AND DC SIDE SIZED

13. NEGATIVE POLE OF PV ARRAY REFERENCED TO GROUND AT THE INVERTER.

14. ALL CONDUCTORS SHALL BE 600V, 90C STANDARD COPPER. ALL CONDUCTORS IN

CONDUIT SHALL BE THWN-2.

15. MAXIMUM DC/AC VOLTAGE DROP SHALL BE NO MORE THAN 1.5%

16. ALL CONDUCTORS SHALL BE CONDUIT UNLESS OTHERWISE NOTED.

17. DC ARRAY CONDUCTORS ARE TO REMAIN OUTSIDE OF BUILDING PRIOR TO

FUSIBLE COMBINER BOX OR FUSIBLE DISCONNECT MEANS.

1. ALL WORK TO COMPLY WITH (2011 NEC) 2013 CALIFORNIA ELECTRIC

CODE ARTICLE 690, 2013 CALIFORNIA BUILDING CODE.

2. CONDUCTORS EXPOSED TO SUNLIGHT SHALL BE LISTED AS

SUNLIGHT RESISTANT PER NEC 310.0(D)

3. CONDUCTORS EXPOSED TO WET LOCATIONS SHALL BE SUITABLE

FOR USE IN WET LOCATIONS PER NEC 310.8(C)

4. WORKING CLEARANCES AROUND THE EXISTING AND NEW

ELECTRICAL EQUIPMENT WILL BE MAINTAINED IN ACCORDANCE WITH

THE NEC 110.26

5. EXPOSED CONDUIT TO BE PAINTED TO MATCH ROOF COLOR

6. SMOKE ALARMS AND C02 ALARMS TO BE INSTALLED

7. EXACT CONDUIT RUN LOCATIONS SUBJECT TO CHANGE.

Cover

NOTE: All Text To Be Minimum

1

8

",

Unless Insufficient Space Is Available.

CUSTOMER INFORMATION

CONTRACTOR INFORMATION

X_________________________

PAGE INDEX

PROJECT NOTES:

PHOTOVOLTAIC LAYOUT :

ATTACHMENT LAYOUT & CALCULATIONS:

ATTACHMENT DETAILS:

FIRE SIGNS/LABELS:

SINGLE LINE DIAGRAM:

SINGLE LINE DIAGRAM CALCULATIONS:

MANUFACTURE SPEC. SHEETS:

COVER

PV-1

PV-2

PV-2.1

PV-3

PV-4

PV-4.1

ATTACHED

VICINITY MAP

Property Of CNG Solar Engineering




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PV-1

Date: 4/3/14

Contractor:

C-10# X____________________________________

Solar Photovoltaic System For:

JOB # : 148

Drafter: NM01 Scale: 13/256" = 1'-0"

Notes:

Building Occupancy Type: R-3 ( Residential: One or Two Dwelling Units)

Construction Type: TYPE V-B ( Unprotected Wood Frame, Examples: Single

Family Homes and Garages.)

(N) Proposed Solar Array Location

(28) SolarWolrd 250W Modules

(28) Enphase M215 Microinverters

Roof Mounted

Junction Box

(E) 100A M.S.P. W/ 100A Main Breaker

(N) 200A M.S.P. W/ 200A Main Breaker

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(N) 30A AC Disconnect

(E) Conduit Run From Sub-Panel

Located in Garage to Main

Service Panel, Through Trench

(E) 100A Sub-Panel

(N) 30A AC Disconnect

(N) Proposed Conduit Run

Through Garage Interior

Junction Box

AZIMUTH





Module InformationSunModule SW 250 Mono

65.94 in X 37.44 in X 1.22 inSquare Footage : 17.144

Weight In Pounds: 46.7Roof Information

Roof Type:Comp.Shingle

Roof Pitch: 18°Rafter Size: 2" x 6"

Rafter Spacing: 24"Array Square Footage: 480.04

Array Weight (Lbs): 1307.6

Racking Weight (Lbs): 252.84Total Weight (Lbs): 1560.44

Lbs/Sq.Ft. : 3.2506Lbs/Footing: 22.9476

Azimuth: 122°, 212°Racking Material List

ProSolar 136 in. Rails 20End Clamps 28Mid Clamps 42

Splice Kits 19Attachments 68

Weebs 28

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PV-2

Date: 4/3/14

Contractor:

C-10# X____________________________________


JOB # : 148

Drafter: NM01

Scale: 1/8" = 1'-0"

Notes:

All Rafters & Attachment Points are approximate and should be verifed on site.

GARAGE MOUNTING DETAILSHOUSE MOUNTING DETAILS

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AZIMUTH





PV-2.1

Date: 4/3/14

Contractor:

C-10# X____________________________________


JOB # : 148

Drafter: NM01 Scale:

Notes:

Racking and Roof Mounting Details

ProSolar Fast Jack # FJ-450-18





WARNING

ELECTRICAL SHOCK HAZARD

DO NOT TOUCH TERMINALS.

TERMINALS ON BOTH LINE AND

LOAD SIDE MAY BE ENERGIZED

IN THE OPEN POSITION

DC VOLTAGE IS ALWAYS PRESENT

WHEN SOLAR MODULES

ARE EXPOSED TO SUNLIGHT

PER NEC 690.17(4)

WARNING



TERMINALS ON BOTH THE LINE AND



PER IFC 690.17(4)

MAIN PV SYSTEM

AC DISCONNECT

PER 605.14.(C)(2), IFC 605.11.1,

NEC 690.11.1.4, NEC 690.15 & NEC 690.53

PHOTOVOLTAIC

AC DISCONNECT

PER 605.11.1, IFC 605.11.14,

NEC 690.15 & NEC 690.14 (C)(2)

WARNING


IF A GROUND FAULT IS INDICATED,

NORMALLY GROUNDED CONDUCTORS

MAY BE UNGROUNDED AND ENERGIZED

PER NEC 690.5(C)

PER IFC 609.14(C)(2)

PHOTOVOLTAIC AC DISCONNECT

MAXIMUM AC OPERATING CURRENT:

MAXIMUM AC OPERATING VOLTAGE:

PER NEC 690.35(F)

PER NEC 690.14(7)

INTERACTIVE PV SYATEM

CONNECTED

MAXIMUM AC OPERATING CURRENT:

MAXIMUM AC OPERATING VOLTAGE:

WARNING



TERMINALS ON BOTH THE LINE AND



PER IFC 609.17(4)

CAUTION

PV SYSTEM CIRCUIT IS BACKFED

WARNING

SECOND SOURCE IS PV SYSTEM

DUAL POWER SOURCE

WARNING

TURN OFF PHOTOVOLTAIC AC

DISCONNECT PRIOR TO WORKING

INSIDE PANEL

WARNING


IF A GROUND FAULT IS INDICATED,

NORMALLY GROUNDED CONDUCTORS

MAY BE UNGROUNDED AND ENERGIZED

PER NEC 690.5(C)

J-BOX

CONDUIT

AC DISCONNECT

SUB-PANEL

MAIN PANEL

WARNING

ELECTRICAL SHOCK HAZARD. THE DC

CONDUCTORS OF THIS PHOTOVOLTAIC

SYSTEM ARE UNGROUNDED AND MAY BE

ENERGIZED.

PV POWER SOURCE

PV-3

Date: 4/3/14

Contractor:

C-10# X____________________________________


JOB # : 148

Drafter: NM01 Scale: Not To Scale

Notes:

SOLAR PV ARRAY

ROOF MOUNTED

CAUTION

POWER TO THE BUILDING IS ALSO SUPPLIED FROM

THE FOLLOWING SOURCES WITH

DISCONNECTS LOCATED AT SHOWN

MAIN SERVICE PANEL

PV DISCONNECT

N

PV DISCONNECT

SUB PANEL





N

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L1

L2

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A

B

String A:

12 SolarWorld 250W Modules

12 Enphase M215 Microinverters

Over Household

Terminator Cap Installed At End Of Cable

Enphase Trunk Cable

To Utility Grid

Junction Box

(2) 30A AC Disconnect

(E) Main Service Panel Rating: 100A

(E) Main Breaker Size: 100A

(N) Main Service Panel Rating: 200A

(N) Main Breaker Size: 200A

15A

20A

L1

L2

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N

N

G

L1

L2

N

G

L1

L2

Junction Box

(E) 100A Sub-Panel

100A x 120% = 120A Max

20A PV Breaker

100A + 20A = 120A

N

G

G

String B:

16 SolarWorld 250W Modules

16 Enphase M215 Microinverters

Over Garage

(E) Sub-Panel Breaker

Existing Breaker Size

To Be Rated For 100A

Minimum. To Be

Verified in Field.

AC.1

AC.2

AC.3

AC.3

AC.4

Existing Ground Rod

Existing Ground Rod

PV-4

Date: 4/3/14

Contractor:

C-10# X____________________________________


JOB # : 148


NOTES:

1. PV CIRCUIT BREAKER SHALL BE INSTALLED AT THE OPPOSITE END OF THE PANEL BUSS FROM THE MAIN CIRCUIT BREAKER.

2. "RACEWAY FOR GROUNDING ELECTRODE CONDUCTOR SHALL BE BONDED AT EACH END" CEC 250.64(E)

3. BECAUSE THE DC CIRCUIT IS ISOLATED AND INSULATED FROM GROUND, THESE MICROINVERTERS DO NOT REQUIRE A GROUNDING ELECTRODE CONDUCTOR (GEC) CONNECTED BETWEEN EACH MICROINVERTER.

AC VOLTAGE DROPFrom Inverter(s) To Load Center/Sub-Panel

Operating Voltage: 240Length Of Conduit Run: 60

Operating Current: 18Voltage Drop: 2.684

Load At End Of Run: 237.32Voltage Drop %: 1.118

AC.1 (3) #10 AWG THWN-2

(1) #10 AWG GROUND

3

4

" EMT CONDUIT

ABOVE ROOF

AC.2 (3) #10 AWG THWN-2

(1) #10 AWG GROUND

3

4

" EMT CONDUIT

THROUGH GARAGE ATTIC

AC.3 (3) #10 AWG THWN-2

(1) #10 AWG GROUND

3

4

" EMT CONDUIT

INTERIOR/EXTERIOR WALL

AC.4 EXISTING WIRE SIZE

TO BE RATED FOR 100A

MINIMUM. TO BE VERIFIED IN FIELD. CONDUIT RUN EXISTING THROUGH TRENCH





Strut Strap

Bell Box

Rain Tight, Steel

EMT Connector.

EMT Conduit

Max Height 3-1/2"

Conduit Above Roof To

Load Center/Main

Service

Strain Relief

DC Cable or

AC Cable For

MicroInverter

Module

2" x 6" Block

Rafter: 2" X 6"

MID-CLAMP

WEEB-PMC

SLIDING NUT

MOUNTING RAIL

Bell Box

Rain Tight, Steel

EMT Connector.

Galvanized Flashing, 9"x 12

1

2

"

Base, No-Calk Coollar

Strut Strap

EMT Conduit

Conduit Through Attic To

Load Center/Main Service

Strain Relief

DC Cable or

AC Cable For

MicroInverter

Module

Rafter: 2" X 6"

PV-4.1

Date: 4/3/14

Contractor:

C-10# X____________________________________


JOB # : 148


Main Panel Calculations

Sub Panel/Load Center Calculations

Per NEC 690.64 (B)(7)(E) Main Panel Rating (A): 100(E) Main Breaker Size (A): 100

(N) Main Panel Rating (A): 200(N) Main Breaker Size (A): 200

Total Amps Allowed (120%): 240

Total PV Load (A): 35Total Amps On Main Panel: 235

Sub-Panel Rating: 100PV Breaker Size (A): 20PV Breaker Size (A): 0PV Breaker Size (A): 0PV Breaker Size (A): 0

Output to Main Panel (A): 20

Module Information

28 SunModule-SW 250 Mono ModulesPower: 250

I-SC 8.28I-MP 8.05V-OC 37.8V-MP 31.1

7 KW SYSTEM

28 SunModule-SW 250 Mono Modules

28 Enphase-M215-60-2LL-S22/S23 Inverter

SYSTEM INFORMATION

Max Out Put In Amps (1.25 x1.25 x 8.28) : 12.9375

Number of strings: 2

Conduit Run: Above RoofWire Choice : 12

Wire Ampacity At 90°C : 30Conduit Correction Per NEC

310.15 (B)(3)(a): 0.8Ambient Tempature °C : 39

Correction Per NEC310.15(B)(3)(c) : 22

Total Ambient Temp. : 61Per NEC 310.18(B)(2)(a) : 0.65

After Derate Factors (30A x 0.8x 0.65) : 15.6

DC CALCULATIONSGROUNDING DETAIL CONDUIT HEIGHT DETAIL

28 Enphase-M215-60-2LL-S22/S23 MicroInvertersMax Number Of Modules Per String : 17

Max Input Voltage 45Modules In String 1 16Modules In String 2 12Modules In String 3 0Modules In String 4 0Modules In String 5 0Modules In String 6 0

Module Output Voltage V-OC : 37.8Number Of Strings : 2

Individual MicroInverter Out Put In Amps : 0.9Max Out Put In Amps (1.25 x 0.9 x 16) : 18

Circuit Breaker Choice: 20 AConduit Run: Above RoofWire Choice : 10

Wire Ampacity At 90°C : 40Conduit Correction Per NEC 310.15 (B)(3)(a): 0.8

Ambient Tempature °C : 39Correction Per NEC 310.15(B)(3)(c) : 22

Total Ambient Temp. : 61Per NEC 310.18(B)(2)(a) : 0.65

After Derate Factors (40A x 0.8 x 0.65) : 20.8

Sub Panel Out Put: 20

Conduit Run: Through Trench

Wire Choice :

Wire Ampacity At 90°C :

Conduit Correction Per NEC 310.15 (B)(3)(a): 1

Ambient Tempature °C : 39

Correction Per NEC 310.15(B)(3)(c) : 0

Total Ambient Temp. : 39

Per NEC 310.18(B)(2)(a) : 0.91

After Derate Factors ( A x 1 x 0.91) :

AC CALCULATIONS

NOTES:

CONDUIT HEIGHT DETAIL

To Be Verified In FieldProperty Of CNG Solar Engineering




PV-4 SLD CALCS

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