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8.A. - Page 110 <br /> Exhibit B. Engineering and Construction Requirements <br /> • Power factor shall be 0.99 or higher. <br /> • Inverter selection shall take into account anticipated noise levels produced and <br /> minimize interference with Buyer activities. <br /> • Inverters shall have a minimum efficiency, based on the device's power rating, of 96%. <br /> • Inverters shall be 600V minimum. 1000V inverters are acceptable. <br /> 3.5.5 Electrical Balance of System Components <br /> • Each proposed PV system shall include, at a minimum, one fused DC disconnect and one <br /> fused AC disconnect for safety and maintenance concerns. <br /> • String combiner boxes must include properly-sized fusing, and all metal equipment and <br /> components must be bonded and grounded as required by NEC. <br /> • String combiner boxes shall be load-break, disconnecting types, such that opening the <br /> combiner boxes shall break the circuit between combiner box feeders and inverters. <br /> • All system wiring and conduit must comply with NEC stipulations, and all indoor and <br /> outdoor wiring, outdoor-rated or otherwise, must be enclosed in EMT or RIGID conduit <br /> or covered raceway, except adjacent panel connections. [All outdoor EMT shall be <br /> weatherproof with weatherproof fittings and boxes, this may include rugged die cast <br /> aluminum construction and powder coasted finish for added corrosion protection.] <br /> • All wiring materials and methods must adhere to industry-standard best practices, and <br /> all inter-module connections must require the use of a specialized tool for <br /> disconnecting. <br /> 3.5.6 Mounting Systems <br /> The mounting systems shall be designed and installed such that the PV modules may be fixed or <br /> tracking with reliable components proven in similar projects,and shall be designed to resist dead <br /> load, live load, corrosion, UV degradation, wind loads, and seismic loads appropriate to the <br /> geographic area over the expected 25-year lifetime. The Seller's design shall sufficiently respond <br /> to the design requirements imposed by Federal,State,and local jurisdictions in effect at the time <br /> of Agreement execution and any pending code decisions affecting the design shall be identified <br /> during Schematic Design.Seller shall conduct an analysis, and submit evidence thereof, including <br /> calculations, of each structure affected by the performance of the scope described herein, and <br /> all attachments and amendments.The analysis shall demonstrate that existing structures are not <br /> compromised or adversely impacted by the installation of PV, equipment, or other activity <br /> related to this scope. Mounting systems must also meet the following requirements at a <br /> minimum: <br /> Exhibit B Page 10 <br />