Specifications include, but are not limited to: Solar Generator Size the system solar generator to provide an array-to-load ratio of 1:1 or greater. Provide a system-average state of charge 90% or greater throughout the entire year. The system-lossof-load probability must remain 0% throughout the entire year. Design and make available the system in the following configurations: ♦ school-zone assembly with two 12-in. signal beacon ♦ advance-warning assembly with one 12-in. signal beacon ♦ advance-warning assembly with two 12-in. signal beacons. The specific configuration will be shown in the Contract. Provide a system-sizing report detailing the photovoltaic array, battery bank, array-to-load ratio analysis, systemavailability analysis, battery state-of-charge report, battery depth of discharge (DOD), and monthly installation information for that specified region. Photovoltaic Modules The photovoltaic PV module must provide 12 V DC and be capable of recharging the system to full capacity after 6 hr. of continuous operation and in 3 hr. ± 0.5 hr. during optimum sun conditions. Supply industrial-grade, polycrystalline-type solar modules. Consumer grade modules are not acceptable. Solar modules must have a power output rating of ± 5% or better. Ensure PV modules are available to the Department in a graduated product line from 40 to 120 W per module. Each solar module, regardless of wattage, must share common mounting holes for mounting so that a single mounting structure that will accommodate the entire module line. Incorporate a 6-in. square polycrystalline cell and at least 2 bypass diodes installed at the factory into each solar module. Construct PV module with a low-iron tempered glass surface and an industrial grade anodized aluminum frame that completely surrounds and seals the module laminate. Ensure construction is consistent with the demands of installation near humid salt air environments. Provide an ultraviolet- (UV) resistant, weatherproof junction box providing wire termination for up to No. 8 AWG wiring with the PV module. Design and construct the photovoltaic module mounting assembly of galvanized steel (ASTM A-153 Class A) or aluminum. The mounting assembly must provide a means of securely attaching the PV module frame to a pole ranging from a minimum 4-1/2 in. outside diameter steel or aluminum pole to a wood pole at a permanent angle of 45° to 50°. Provide at least four 3/4 in. stainless steel bolts, lock washers, and hex head nuts with the mounting assembly to secure the PV module to the frame. Provide a mounting assembly capable of 360° horizontal orientation with a means of locking the bracket at an inscribed angular position about the pole. The photovoltaic harness must not exceed 2% total voltage drop between the solar module and the charge control circuit.