Laserfiche WebLink
City of Everett 26 05 26 - 7 <br /> Inductive Charging Infrastructure for Everett Transit <br /> 2) Bonding to Equipment Mounted on Vibration Isolation Hangers and <br /> Supports: Install bonding so vibration is not transmitted to rigidly <br /> mounted equipment. <br /> 3) Use exothermic-welded connectors for outdoor locations; if <br /> disconnect-type connection is required, use bolted clamp. <br /> g. Grounding and Bonding for Piping: <br /> 1) Metal Water Service Pipe: Install insulated copper grounding <br /> conductors, in conduit, from building's main service equipment, or <br /> grounding bus, to main metal water service entrances to building. <br /> Connect grounding conductors to main metal water service pipes; <br /> use bolted clamp connector or bolt lug-type connector to pipe flange <br /> by using one of lug bolts of flange. Where dielectric main water fitting <br /> is installed, connect grounding conductor on street side of fitting. <br /> Bond metal grounding conductor conduit or sleeve to conductor at <br /> each end. <br /> 2) Water Meter Piping: Use braided-type bonding jumpers to electrically <br /> bypass water meters. Connect to pipe with bolted connector. <br /> 3) Bond each aboveground portion of gas piping system downstream <br /> from equipment shutoff valve. <br /> 3. Electrodes: <br /> a. Ground Rods: Drive rods until tops are 2 inches below finished floor or final <br /> grade unless otherwise indicated. <br /> 1) Interconnect ground rods with grounding electrode conductor below <br /> grade and as otherwise indicated. Make connections without <br /> exposing steel or damaging coating if any. <br /> 2) Use exothermic welds for below-grade connections. <br /> b. For grounding electrode system, install at least three rods spaced at least <br /> one-rod length from each other and located at least same distance from <br /> other grounding electrodes, and connect to service grounding electrode <br /> conductor. <br /> c. Test Wells: Ground rod driven through drilled hole in bottom of handhole. <br /> Handholes are specified in Section 260543 "Underground Ducts and <br /> Raceways for Electrical Systems," and must be at least 12 inches deep, <br /> with cover. <br /> 1) Install at least one test well for each service unless otherwise <br /> indicated. Install at ground rod electrically closest to service entrance. <br /> Set top of test well flush with finished grade or floor. <br /> 4. Grounding at Service: <br /> a. Equipment grounding conductors and grounding electrode conductors must <br /> be connected to ground busbar. Install main bonding jumper between <br /> neutral and ground buses. <br /> 5. Grounding Separately Derived Systems: <br /> 26 05 26 - 7 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS <br />