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INDIAN RIVER COUNTY - NORTH COUNTY REGIONAL PARK PAGE 3 <br />AQUATIC FACILITY ROOFING REPLACEMENT SECTION 264100 <br />JUNE 7, 2019 LIGHTNING PROTECTION SYSTEM <br />4 <br />5 <br />TVSS ratings: TVSSs supplied shall meet or exceed the capabilities listed below: <br />Nominal <br />System <br />Voltage <br />(VRMS) <br />Maximum* <br />Clamping <br />Voltage <br />(VRMS) <br />Peak Sur <br />Service <br />Entrances <br />(kA) <br />a Current <br />Subpanels <br />(kA) <br />120 <br />400 <br />100 <br />50 <br />208 <br />650 <br />100 <br />50 <br />240 <br />800 <br />100 <br />50 <br />277 <br />950 <br />100 <br />50 <br />480 <br />1600 <br />100 1 <br />50 <br />575 <br />1900 <br />100 1 <br />50 <br />- measurea at i u KA zs x zu surge current <br />Multiple pulse: 5kA (8 x 20 micro -sec.) <br />10 pulses in 2 sec. <br />Fusing: <br />a. Surge protective devices shall contain both accurate thermal and short circuit <br />safety fusing within each replaceable protection module. <br />b. The fusing mechanisms employed must effectively coordinate their <br />performance in conjunction with the full surge handling capabilities of the <br />suppresser. <br />c. Surge protective devices shall provide on -board visual status of their <br />operational readiness by indication and dry contact for remote alarming. <br />6. Maintenance: TVSSs shall require no routine maintenance. TVSSs are considered <br />non -repairable items. <br />PART 3.00 - EXECUTION <br />3.01 INSTALLATION <br />A. Structural lightning protection: <br />1. Install down conductors in an inconspicuous manner or build into the building during <br />construction for concealment. <br />2. Make down conductors, side bonding conductors and jumpers as short and direct <br />as possible. No unnecessary loops will be allowed. <br />3. Provide adhesive cable clamps every 3 ft. o.c., for exposed. down conductors on <br />roof. <br />4. Fasten air terminal bases to metal roofing using a minimum of three No. 14 self - <br />tapping stainless steel sheet metal screws. Alternate fastening may consist of two <br />1/4 -in. bolts with nuts, washers, and lock washers on the interior of the roof or silver <br />solder brazed to the roof metal directly. Seal base and holes with waterproof <br />sealant such as RTV silicon rubber. <br />