Common use of Wire and Cable Clause in Contracts

Wire and Cable. This section covers the furnishing and installation of all power, control and instrument cable for the project. Wire and cable shall comply with ICEA, IEEE, NFPA, UL, ANSI and IPCEA codes, standards and specifications. Cables shall be sized to withstand the anticipated fault current at the load terminals for the anticipated fault duration or 0.5 seconds, whichever is greater. Cables routed through a combination of different raceways or environments, such as cable tray, conduit, underground or high ambient areas, shall be sized in a manner resulting in the largest conductor size. Cable ampacities shall be based upon 125 percent of motor nameplate rating or maximum running load, whichever is greater; 125 percent of a transformer's highest continuous rating; and the maximum ambient temperature to which they shall be subjected. Cables shall be suitable for installation in wet or dry locations, indoors and outdoors, in cable tray, conduit or duct banks. Power cable shall be provided with Class B, uncoated, annealed copper conductor. Control and instrument cable shall be provided with Class B, uncoated annealed copper conductor. Medium voltage cable shall be shielded in accordance with ICEA S-68-516. The Contractor shall provide cable types as follows: Cable Type Insulation Jacket (flame retardant) ---------- ---------- ------------------------ 8kV/5kV Single Cond EPR PVC or CPE shielded Power 600V single cond EPR or XLP PVC, CPE, or None Power Multi conductor EPR, XLP CPE or PVC -------------------------------------------------------------------------------- EPC - Exhibit B -------------------- TENASKA GEORGIA GENERATION PROJECT Page 97 of 132 -------------------------------------------------------------------------------- Power Control Cable EPR, XLP, PVC-Nylon CPE or PVC Instrument Cable EPR/XLP/PVC-Nylon CPE or PVC Thermocouple XLP, PVC-Nylon CPE or PVC Shielding tape for instrumentation cable shall be copper or aluminum providing 100 percent coverage. Individual raceway systems shall be established for each of the following services: (1) Instrumentation and Low Voltage (GE Level 1) (2) High Level Signals and Control (GE Level 3) (3) 480V Power and 120V Control (GE Level 4) (4) 4.16 kV and higher power cables (GE Level 4s) Spare instrumentation and control wires at control panels and motor control centers may be left unterminated. Conductors shall be left long enough to terminate on any terminal strips. Conductors shall be taped at both ends. Control and secondary wiring in the control box shall not be spliced in the control box. Control and secondary cable that pass through conduit shall not be spliced inside the conduit. Weatherproof junction boxes with terminal blocks may be used to extend secondary wiring passing through conduit. Every terminal block, every terminal point, and every wire terminated thereon shall be clearly identified and labeled, with permanent labels. Cable and wire shall be color coded per ICEA standards. Stress cones shall be used on all medium voltage cable. No wire smaller than #12 AWG shall be used except that pilot control and signal may be #14 AWG unless ampacity or voltage drop dictates otherwise. Termination of wires shall be made with full compression ring-tongue or spade type with hooked ends lugs with insulated ferrules. Each cable type shall be given voltage tests, insulation resistance tests, conductor resistance tests and flame tests per applicable codes. Each medium voltage cable shall be given a high potential test after installation. All cable shall be given megger and continuity tests. -------------------------------------------------------------------------------- EPC - Exhibit B -------------------- TENASKA GEORGIA GENERATION PROJECT Page 98 of 132 --------------------------------------------------------------------------------