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<br />You Determine: <br />. Geographic Location <br />../ Different geographic locations have different solar insolation which determines the size of the required <br />solar panels <br /> <br />. The Application <br />../ Different applications need different amounts of light <br /> <br />. Light level Requirement (if any): <br />../ Different light level requirements may be required by city or county codes and will depend upon the <br />pedestrian or vehicle usage of the project. <br /> <br />. Run Time (Duration of the load) <br />../ Number of hours you need the lights to be on each night. Examples: Dusk to Dawn. 12 hours. 6 hours. or <br />one of our split time controllers (6/2 or 412 - 6 or 4 hours after dusk & 2 hours before dawn). etc. <br /> <br />We Determine: <br /> <br />. Sun Hours based on your location <br />../ Different geographic locations have different solar insolation (sun hour factor) which will determine the <br />size of the solar panel(s) needed. <br /> <br />. The Light Output <br />../ Based on the amount of light you need for your particular application or specific footcandle requirement on <br />the ground <br /> <br />. The Size of the Required Solar Panels <br />,/ Solar panels typically come in a variety of sizes. We always calculate a reserve and round up to the next <br />higher panel size. <br /> <br />. The Model - Flat Solar Panel Array or Tilted Solar Panel Array <br />,/ Based on your particular parameters. we can recommend which system will be more cost effective. <br /> <br />. The Size and Number of Batteries <br />,/ Our systems are typically sized with 5 days battery back-up. <br />../ Our Power Management feature monitors battery voltage and adjusts accordingly (LED models only) <br />./ Additional battery back-up can be added if needed. <br /> <br />. The most suitable Fixture style <br />,/ Cobrahead or Shoebox -- Drop lens or CUt off lens are available. <br /> <br />. Optimal mounting height. pole spacing and placement. to match your specified light requirements. <br /> <br />Performance of Solar Lighting Systems <br />The performance of solar lighting systems measure in foot-candles or lux on the ground. <br />These are influenced by: <br />. Type of light source <br />. Reflector <br />. Refractor or Lens <br />. Pole Height <br />. Spacing of Poles <br /> <br />7 <br />