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HomeMy WebLinkAboutApproved solar plans and building applicationL www.lakevillemn.gov 18037 Green Gables TRL Lakeville MN 55044 Rooftop solar PV colin.buechel@allenergysolar.com Tim Theobald (612) 599-8358 All Energy Solar 665719 651-842-9404 1264 Energy Ln St Paul MN 55108 Colin Buechel 5/26/21 0.00 65% 0.00 ARC DESIGN 409 N. MAIN STREET ELMER, NJ 08318 (856) 712-2166 FAX: (856) 358-1511 Construction Code Office Date: May 25, 2021 Re: Roof Certification Letter Subj: Theobald Residence, 18037 Green Gables Trl., Lakeville, MN 55044 We have provided a review of the roof constructions of the above named property in regards to verifying the capacity of the existing roof for installation of a new Solar Panel Array. We have found the structure to be of wood frame construction. The Array is of 2x4 @ 24 truss and is sheathed with -ply sheathing a single layer of composite shingles roofing. The wood framed roof structure bears directly upon the framed exterior wall system. The existing members as installed meet the required IRC-2018 with 2020 MN amendments design span ratings with sufficient capacity to carry the 4#/sf additional load imposed by the proposed solar array per the details below. Installation of solar rack systems shall be as follows: Each panel row shall be supported upon 2 mounting rails. Rails shall be screw anchored through roof and directly to rafters below. Rail attachment points to rafters shall be staggered each row with exception to the first fastener row from the gable end which is attached to two adjacent rafters. A roofing compatible sealant or shingle flashing kit shall be utilized at each mtg. foot location. Solar panel mounting systems installed parallel to the plane of a roof shall be no more than 12" above the roof when measured perpendicular to the roof surface. When installed per the above specifications the system shall meet the required 115 MPH wind load and 50 PSF ground snow load requirements. Should you have any further question or comment please feel free to contact our office. Respectfully, James A. Clancy Professional Engineer MN License # 45968 LG420QAK-A6 About LG Electronics USA, Inc. LG Electronics is a global leader in electronic products in the clean energy markets by offering solar PV panels and energy storage systems. The company first embarked on a solar energy source research program in 1985, supported by LG Group’s vast experience in the semi-conductor, LCD, chemistry and materials industries. In 2010, LG Solar successfully released its first MonoX® series to the market, which is now available in 32 countries. The NeON® (previous MonoX® NeON), NeON®2, NeON®2 BiFacial won the “Intersolar AWARD” in 2013, 2015 and 2016, which demonstrates LG’s leadership and innovation in the solar industry. 420W LG Solar’s NeON® R Prime is a powerful solar module that provides premium performance. The NeON® R incorporates a cell structure without electrodes on the front to maximize light utilization and enhance reliability. Providing added value for the customer beyond efficiency, this module features an enhanced warranty, outstanding durability, solid performance in real-world conditions and aesthetic design suitable for roofs. Enhanced Performance Warranty LG NeON® R has an enhanced performance warranty. After 25 years, LG NeON® R is guaranteed at least 92.5% of initial performance. Roof Aesthetics LG NeON® R has been designed with aesthetics in mind: the lack of any electrodes on the front creates an improved, modern aesthetic. 25-Year Limited Product Warranty The NeON® R covered by a 25-year limited product warranty. In addition, up to $450 of labor costs will be covered in the rare case that a module needs to be repaired or replaced. More Generation Per Square Meter The LG NeON® R has been designed to significantly enhance its output, making it efficient even in limited space. Features yrs25 Warranty When you go solar, ask for the brand you can trust: LG Solar 66 LG420QAK-A6 I-V Curves Certifications and Warranty Certifications IEC 61215-1/-1-1/2 : 2016, IEC 61730-1/2 : 2016, UL 61730-1 : 2017, UL 61730-2 : 2017 ISO 9001, ISO 14001, ISO 50001 OHSAS 18001 Salt Mist Corrosion Test IEC 61701 : 2012 Severity 6 Ammonia Corrosion Test IEC 62716 : 2013 Hail Test 25mm (1") diameter at 23m/s (52mph) Module Fire Performance Type 2 (UL 61730) Fire Rating Class C (UL 790, ULC/ORD C 1703) Solar Module Product Warranty 25 Year Limited Solar Module Output Warranty Linear Warranty* *Improved: 1st year 98.5%, from 2-24th year: -0.25%/year down, 92.5% for 25 years (TBD) Electrical Properties (NMOT) Model LG420QAK-A6 Maximum Power (Pmax)[W]319 MPP Voltage (Vmpp)[V]39.0 MPP Current (Impp)[A]8.17 Open Circuit Voltage (Voc)[V]45.8 Short Circuit Current (Isc)[A]8.73 Operating Conditions Operating Temperature*[°C ] -40 ~ +85 Maximum System Voltage [V] 1,000 Maximum Series Fuse Rating [A] 20 Mechanical Test Load** (Front)[Pa/psf] 5,400 Mechanical Test Load** (Rear)[Pa/psf] 4,000 *The operating ambient temperature of these devices may exceed 40°C at full load for all wire sizes if is determined suitable in the field use application. **Based on IEC 61215-2 : 2016 (Test Load = Design Load x Safety Factor (1.5)) General Data Cell Properties (Material/Type)Monocrystalline/N-type Cell Maker LG Cell Configuration 66 Cells (6 x 11) Module Dimensions (L x W x H)1,910mm x 1,042mm x 40mm Weight 20.5 kg Glass (Material)Tempered Glass with AR Coating Backsheet (Color)Black Frame (Material)Anodized Aluminium Junction Box (Protection Degree)IP 68 with 3 Bypass Diodes Cables (Length)1,250mm x 2EA Connector (Type/Maker)MC 4/MC Temperature Characteristics NMOT*[ °C ] 44 3 Pmax [%/°C]-0.29 Voc [%/°C]-0.24 Isc [%/°C] 0.04 *NMOT (Nominal Module Operating Temperature): Irradiance 800 W/m2, Ambient temperature 20°C, Wind speed 1 m/s, Spectrum AM 1.5 LG Electronics USA, Inc. Solar Business Division2000 Millbrook Drive Lincolnshire, IL 60069 www.lg-solar.com Product specifications are subject to change without notice. LG420QAK-A6.pdf 021221 © 2021 LG Electronics USA, Inc. All rights reserved. Dimensions (mm/inch) Packaging Configuration Number of Modules per Pallet [EA] 25 Number of Modules per 40' Container [EA] 600 Number of Modules per 53' Container [EA] 800 Packaging Box Dimensions (L x W x H)[mm] 1,960 x 1,120 x 1,221 Packaging Box Dimensions (L x W x H)[in] 77.2 x 44.1 x 48.1 Packaging Box Gross Weight [kg] 549 Packaging Box Gross Weight [lb] 1,210 Electrical Properties (STC*) Model LG420QAK-A6 Maximum Power (Pmax)[W]420 MPP Voltage (Vmpp)[V]41.3 MPP Current (Impp)[A]10.19 Open Circuit Voltage (Voc, 5%)[V]48.0 Short Circuit Current (Isc, 5%)[A]10.83 Module Efficiency [%]21.1 Power Tolerance [%]0 ~ +3 *STC (Standard Test Condition): Irradiance 1000 W/m², cell temperature 25°C, AM 1.5 Measure Tolerance: 3%+_ +- +- SnapNrack_Ultra Rail Sales Brochure_v.1.4