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DONNELLY ENGINEERING ELECTRICAL <br /> F. Certification: Provide documentation of LPI certification or equivalent qualification of exact installer <br /> intended to do this particular job. <br /> PART2 - PRODUCTS <br /> 2.1 GENERAL REQUIREMENTS <br /> A. Labels: All materials used for the system installation shall comply in size, composition and weight to all <br /> requirements of NFPA and LPI for the class of system in which they are installed. All materials shall be <br /> labeled or listed by Underwriters Laboratories Inc or NRTL for use in master labeled or LPI certified <br /> lightning protection systems. <br /> B. Material: Generally, the lightning protection system at the roof level shall be constructed of aluminum <br /> cable and aluminum compatible components except for down conductors and ground loops, which shall <br /> be copper. <br /> C. Compatibility: All portions of the system, whether copper or aluminum, shall be galvanically <br /> compatible to the building material to which they are to be attached. Connections between copper and <br /> aluminum portions of the system shall be made with appropriate bimetallic coupling devices. In all <br /> areas, the conductor shall be supported to maintain clearance from all galvanically incompatible <br /> materials and/or installed from same. <br /> D. Components: All system components (i.e. air terminals, bases, connectors, cable, thru-roof fittings, <br /> ground rods, etc.) shall be, to the maximum extent possible, the product of a single manufacturer. All <br /> components shall be heavy duty construction utilizing hexagonal head bolts for fastening to mechanical <br /> equipment and adhesive bases for mounting to roof. <br /> 2.2 AIR TERMINALS <br /> A. General: Air Terminals shall be aluminum as required to match the building system to which they <br /> attach. Air terminals shall protrude a minimum of 10 inches above the object to be protected. Air <br /> iterminals shall be 24" minimum. <br /> B. Base: Each air terminal shall be equipped with the correct type of base for the location in which it is <br /> mounted. <br /> 2.3 CONDUCTORS <br /> A. General: Main roof conductors shall be aluminum and provide a two-way path from each air terminal <br /> horizontally or downward to connections with ground terminals. Conductors shall be free of excessive <br /> i splices and sharp bends. No bend of a conductor shall form an included angle of less than 90 degrees <br /> nor have a radius of bend of less than 8 inches. Conductors shall be secured to the structure at <br /> intervals not exceeding 3 feet. <br /> B. Down Conductors: Down conductors shall be copper and shall be exposed on the exterior wall <br /> construction or concealed in the block walls. No electrical devices shall be installed in the cell where the <br /> down conductor is installed. Down conductors installed in shed 80 pvc located in exterior furred walls <br /> shall be installed only where allowed by the Engineer. Install in walls located in between studs that have <br /> electrical devices or any other components that can have induced flash over strikes. Down conductors <br /> shall be spaced at intervals averaging not more than 100 feet around the perimeter of the structure. <br /> Connections to the steel frame at the base of the building shall be made with heavy duty bonding plates <br /> having 8 square inches of contact surface. <br /> C. Main conductor cable shall be 3/0 minimum. <br /> Heartland Health Care Center of Zephyrhills-3181 16670-2 DE No 217032 <br /> 38220 Henry Drive,Zephyrhills, FL 33542 Pending Emergency Rule 59A-4.1265 <br />