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HomeMy WebLinkAboutDRB17-0493_Walker Residence Solar Calculations_1509053564.pdfPage 1 of 5 10/20/2017 Solar Installation Information Vendor: Active Energies Solar LLC PO Box 7627 Avon, CO 81620 (970-306-4233/info@activeenergies.com) Site: Walker Residence 1624 Buffehr Creek Road Vail CO 81657 System Layout: Single Panel: 5.38ft tall X 3.26ft wide Panel Arrangement: Panels oriented in the portrait position, mounted flush on the south & east facing roof sections All AC wiring to be completed by a Colorado licensed master electrician All DC wiring to be overseen by NABCEP certified installer Minimum Designed Temperature: -40°F Maximum Ambient Design Temperature: 140°F Meter is located the west side of the garage. PV production meter to be located adjacent to the HCE meter. Inverters and combining panel to be located in the garage. = 3’ Fire Code setback Current HCE Meter and future Production Meter -meter hole to be cut HCE Meter Solar energy device framing, brackets and associated equipment shall be black or a color that matches adjacent building surfaces. No advertising shall be permitted on any solar energy device, framing, brackets and associated equipment. DRB APPROVED 10/26/2017 12:00:00 AM Page 2 of 5 10/20/2017 Calculations 16.575kW System Size (STC) • 51 Solaria PowerXT 325 solar modules @ 325watts • 51 SolarEdge P370 Optimizers • 2 SolarEdge SE7600A-US inverters (2 strings of 12 and 2 strings of 13/14 modules/optimizers per inverter) Allowable String Sizing 8-16 • Mounting Equipment: Unirac racking system with S5 mounting feet • Fixed array tilt angle: 14.04° • Array azimuth: 65º & 145º (where 180º is south) • Estimated annual power production: 22,513kWh Maximum PV System Voltage: 690.7 Voc = 44.5V/module 44.5V x 1 module = 44.5V Temperature correction factor 690.7(A) Temperature Coefficient (Voc) = -0.32%/°C (-65C° x (-.0032C°)) = .208% ((.208% x 44.5V) x 1 panels) + 44.5V = 53.76V Maximum PV Source Circuit (String) Current: 690.8 (A)(1) Isc = 9.4A 9.4A x 1.25 = 11.75A Maximum PV Output Circuit (Array) Current: 690.8 (A)(2) SE7600A-US inverter limit 23A combined string Inverter Output Circuit Current: 690.8 (A)(3) 32A @ 240V DRB APPROVED 10/26/2017 12:00:00 AM Page 3 of 5 10/20/2017 Conductor Sizing Pass Thru Box from Optimizers to Inverter (combined strings per inverter): SE7600A-US inverter limit 23A combined string 23A x 1.25 = 28.8A #10 THWN-2 Table 310.16 40A (90ºC column, see note 240.4(D)) Temperature correction factor Table 310.15 (B)(2)(b) 40A x .78 = 31.2A No conduit fill adjustment Pass Thru Box from Optimizers to Inverter (combined strings shared conduit): SE7600A-US inverter limit 23A combined string 23A x 1.25 = 28.8A #10 THWN-2 Table 310.16 40A (90ºC column, see note 240.4(D)) No Temperature correction factor Conduit fill adjustment Table 310.15 (B)(3)(a) Use .8 for 4-6 current carrying conductors 40A x .8 = 32A Individual Inverter to PV Combining Panel: Nameplate maximum continuous output current: 32A @ 240V 32A x 125% = 40A 210.19 (A)(1) #8 THWN-2 Table 310.16 55A (75ºC column) No temperature correction factor No conduit fill adjustment DRB APPROVED 10/26/2017 12:00:00 AM Page 4 of 5 10/20/2017 PV Combining Panel to PV Production Meter to Backfeed Point: 40A x 2 inverters = 80A 210.19 (A)(1) #4 THWN-2 Table 310.16 130A (75ºC column) No temperature correction factor No conduit fill adjustment Overcurrent Protection Device 2 x 40A 2p breaker Per Manufacturer Specification per inverter 80A 2p breaker at backfeed point Conductors may be oversized for voltage drop DRB APPROVED 10/26/2017 12:00:00 AM Page 5 of 5 10/20/2017 80A 8 #10 PV Wire 1# 6G Bare Cu Conductors in Free Air Inverter w/ Integrated DC Disconnect SolarEdge SE7600A-US NEMA 3R with Rapid shutdown Max AC Output: 32A @ 240V Located in garage DC Grounding Electrode Conductor solid bare #6 Cu per NEC 250.66(C) Service Panel Located in garage 16.575 kW Utility Interactive Photovoltaic System Modules: 51 Solaria PowerXT 325 Voc = 44.5 V Isc = 9.4 A Optimizers: 51 SolarEdge P370 Inverter 2 SolarEdge SE7600A-US 2 Strings X 12 & 13/14 Modules/Optimizers per inverter Operating Voltage: 350V Operating Current: 23A Max System Voltage: 500V Max Output Current: 30A Tilt Angle: 14.04º Array Azimuth: 65° & 145° Production: 22,513kWh/yr Notes: - See Calculation Sheet for conductor sizing. - All conductors are copper unless otherwise noted. DC Wiring 1000v - Inverter listed (UL-1741) to de- energize upon loss of utility voltage per NEC 690.61. - Inverter has integral ground-fault protection per NEC 690.5 - 240V 1 Phase Service Panel rating of 200A (bus rating 200 amp) to accommodate 80A (PV) + 100A (Main) = 180A supply (up to 120% of connected power sources from installations per NEC 705(D)(2)(3)(b) Array mounted on roof 51 Solaria PowerXT 325 Solar Panels 51 SolarEdge P370 DC Optimizers Located west side of home Placard on meter and main panel stating ”Photovoltaic System Connected” per Holy Cross specifications PV Production meter Adjacent to meter PV Combining Panel >80A bus In garage w/ 2x40A2p breakers Backfeed Breaker: 80A 2p 240v Meter Line Diagram Walker Residence 1624 Buffehr Creek Road Vail CO 81657 +/-100' ¾" C EMT 4 #10 THWN-2 1 #10 Ground 1 2 3 12 ... Pass Thru Box on Roof 13 14 15 24 ... +/-5' ¾” C EMT/PVC/FNMC 3 #8 THWN 1 #8 Ground +/-10' >=1¼”” C PVC/FMC/other 3 #4 THWN 1 #4 Ground Identical DC Layout with strings of 13/14 Inverter w/ Integrated DC Disconnect SolarEdge SE7600A-US NEMA 3R with Rapid shutdown Max AC Output: 32A @ 240V Located in garage +/-5' ¾” C EMT/PVC/FNMC 3 #8 THWN 1 #8 Ground +/-10' >=1¼”” C PVC/FMC/other 3 #4 THWN 1 #4 Ground DRB APPROVED 10/26/2017 12:00:00 AM About Solaria Established in 2000, The Solaria Corporation has created one of the industry’s most respected IP portfolios, with over 100 patents encompassing materials, processes, applications, products, manufacturing automation and equipment. Headquartered in Fremont, California, Solaria has developed a technology platform that unlocks the potential of solar energy allowing it to be ubiquitous and universally accessed. DRB APPROVED 10/26/2017 12:00:00 AM 2 Solaria PowerXT- 320R-BX 325R-BX 325R-PX 330R-PX 2 243 4 * * 2 2 2 2 2 DRB APPROVED 10/26/2017 12:00:00 AM                            DRB APPROVED 10/26/2017 12:00:00 AM                                                                                                                          DRB APPROVED 10/26/2017 12:00:00 AM DRB APPROVED 10/26/2017 12:00:00 AM DRB APPROVED 10/26/2017 12:00:00 AM